Rice - Specification (ISO 7301:2021)

This document establishes the minimum specifications for rice (Oryza sativa L.) that is subject to international trade. It is applicable to husked rice and milled rice (aromatic and not aromatic), parboiled or not, intended for direct human consumption. It does not apply to other products derived from rice nor to waxy rice (glutinous rice).

Reis - Anforderungen (ISO 7301:2021)

Dieses Dokument legt die Mindestanforderungen für Reis (Oryza sativa L.) fest, der international gehandelt wird. Es ist anwendbar für geschälten Reis und geschliffenen Reis (duftend und nicht duftend), parboiled oder nicht, der für den direkten menschlichen Verzehr bestimmt ist. Es ist nicht anwendbar für andere Produkte, die aus Reis hergestellt werden, oder für Wachsreis (Klebreis).

Riz - Spécifications (ISO 7301:2021)

Le présent document établit les spécifications minimales pour le riz (Oryza sativa L.) qui fait l’objet d’un commerce international. Il est applicable au riz décortiqué et au riz usiné (parfumés et non parfumés), étuvés ou non, destinés à l’alimentation humaine. Il ne s’applique pas à d’autres produits dérivés du riz, ni au riz gluant (riz glutineux).

Riž - Specifikacija (ISO 7301:2021)

General Information

Status
Published
Publication Date
30-May-2023
Withdrawal Date
30-May-2023
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
29-May-2023
Completion Date
09-Nov-2022

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SLOVENSKI STANDARD
SIST EN ISO 7301:2023
01-januar-2023
Riž - Specifikacija (ISO 7301:2021)
Rice - Specification (ISO 7301:2021)
Reis - Anforderungen (ISO 7301:2021)
Riz - Spécifications (ISO 7301:2021)
Ta slovenski standard je istoveten z: EN ISO 7301:2022
ICS:
67.060 Žita, stročnice in proizvodi iz Cereals, pulses and derived
njih products
SIST EN ISO 7301:2023 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN ISO 7301:2023
---------------------- Page: 2 ----------------------
SIST EN ISO 7301:2023
EN ISO 7301
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2022
EUROPÄISCHE NORM
ICS 67.060
English Version
Rice - Specification (ISO 7301:2021)
Riz - Spécifications (ISO 7301:2021) Reis - Anforderungen (ISO 7301:2021)
This European Standard was approved by CEN on 30 October 2022.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this

European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references

concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN

member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by

translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management

Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,

Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and

United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 7301:2022 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN ISO 7301:2023
EN ISO 7301:2022 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

---------------------- Page: 4 ----------------------
SIST EN ISO 7301:2023
EN ISO 7301:2022 (E)
European foreword

The text of ISO 7301:2021 has been prepared by Technical Committee ISO/TC 34 "Food products” of

the International Organization for Standardization (ISO) and has been taken over as EN ISO 7301:2022

by Technical Committee CEN/TC 338 “Cereal and cereal products” the secretariat of which is held by

AFNOR.

This European Standard shall be given the status of a national standard, either by publication of an

identical text or by endorsement, at the latest by May 2023, and conflicting national standards shall be

withdrawn at the latest by May 2023.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

Any feedback and questions on this document should be directed to the users’ national standards body.

A complete listing of these bodies can be found on the CEN website.

According to the CEN-CENELEC Internal Regulations, the national standards organizations of the

following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,

Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,

Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of

North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the

United Kingdom.
Endorsement notice

The text of ISO 7301:2021 has been approved by CEN as EN ISO 7301:2022 without any modification.

---------------------- Page: 5 ----------------------
SIST EN ISO 7301:2023
---------------------- Page: 6 ----------------------
SIST EN ISO 7301:2023
INTERNATIONAL ISO
STANDARD 7301
Fourth edition
2021-06
Rice — Specification
Riz — Spécifications
Reference number
ISO 7301:2021(E)
ISO 2021
---------------------- Page: 7 ----------------------
SIST EN ISO 7301:2023
ISO 7301:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved
---------------------- Page: 8 ----------------------
SIST EN ISO 7301:2023
ISO 7301:2021(E)
Contents  Page

Foreword ........................................................................................................................................................................................................................................iv

1  Scope ................................................................................................................................................................................................................................. 1

2  Normative references ...................................................................................................................................................................................... 1

3  Terms and definitions ..................................................................................................................................................................................... 1

4  Specifications ........................................................................................................................................................................................................... 5

4.1 General, sensory and health specifications .................................................................................................................... 5

4.2 Physical and chemical specifications ................................................................................................................................... 5

4.3 Minimum specifications subject to agreement ........................................................................................................... 6

5  Test methods ............................................................................................................................................................................................................. 6

6  Packaging ..................................................................................................................................................................................................................... 7

Annex A (normative) Methods of analysis for rice specifications .......................................................................................... 8

Annex B (normative) Determination of waxy rice in parboiled rice ................................................................................18

Annex C (normative) Determination of stress-cracked kernel in non-parboiled rice ..................................20

Bibliography .............................................................................................................................................................................................................................21

© ISO 2021 – All rights reserved iii
---------------------- Page: 9 ----------------------
SIST EN ISO 7301:2023
ISO 7301:2021(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/ patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/

iso/ foreword .html.

This document was prepared by Technical Committee ISO/TC 34, Food products, Subcommittee SC 4,

Cereals and pulses.

This fourth edition cancels and replaces the third edition (ISO 7301:2011), which has been technically

revised. The main changes compared with the previous edition are as follows:
— the terms and definitions have been updated;

— the method for the determination of the average length originally given in A.4.3.2 and A.4.3.3 has

been deleted, and a reference to ISO 11746 has been added.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2021 – All rights reserved
---------------------- Page: 10 ----------------------
SIST EN ISO 7301:2023
INTERNATIONAL STANDARD ISO 7301:2021(E)
Rice — Specification
1  Scope

This document establishes the minimum specifications for rice (Oryza sativa L.) that is subject to

international trade. It is applicable to husked rice and milled rice (aromatic and not aromatic), parboiled

or not, intended for direct human consumption. It does not apply to other products derived from rice

nor to waxy rice (glutinous rice).
2  Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 712, Cereals and cereal products — Determination of moisture content — Reference method

ISO 11746, Rice — Determination of biometric characteristics of kernels
3  Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1
paddy
paddy rice
rough rice
rice retaining its husk after threshing
3.2
husked rice
brown rice
cargo rice
paddy (3.1) from which only the husk has been removed

Note 1 to entry: The processes of husking and handling can result in some loss of bran.

3.3
milled rice
white rice

husked rice (3.2) from which some or all of the bran and embryo have been removed by mechanical

milling
3.4
parboiled rice

rice subjected to a hydrothermical treatment so that the starch is fully gelatinized, followed by a drying

process
© ISO 2021 – All rights reserved 1
---------------------- Page: 11 ----------------------
SIST EN ISO 7301:2023
ISO 7301:2021(E)
3.5
parboiled milled rice

milled rice (3.3) obtained from paddy (3.1) or husked rice (3.2) subjected to a hydrothermical treatment

so that the starch is fully gelatinized, followed by a drying process
3.6
parboiled husked rice

husked rice (3.2) obtained from paddy (3.1) subjected to a hydrothermical treatment so that the starch

is fully gelatinized, followed by a drying process
3.7
waxy rice
glutinous rice
varieties of rice whose kernels have a white and opaque appearance

Note 1 to entry: The starch of waxy rice contains an extremely low level of amylose, consisting almost entirely of

amylopectin. The kernels have a tendency to stick together after cooking.
3.8
aromatic rice

variety of rice releasing a particular aroma (e.g. roasted nuts, popcorn) that increases during cooking

3.9
entire kernel
husked or milled kernel without any broken part
3.10
whole kernel

husked or milled kernel with a length greater than or equal to nine-tenths of the average length (3.17)

of an entire kernel (3.9)
Note 1 to entry: See Figure 1.
Key
1 whole kernel (3.10) 5 head rice (3.11)
2 large broken kernel (3.13) 6 broken kernel (3.12)
3 medium broken kernel (3.14) 7 chip (3.16)
4 small broken kernel (3.15) average length (3.17)
Figure 1 — Size of kernel, broken kernel and chip
2 © ISO 2021 – All rights reserved
---------------------- Page: 12 ----------------------
SIST EN ISO 7301:2023
ISO 7301:2021(E)
3.11
head rice

whole kernel (3.10) or part of a kernel with a length greater than or equal to three-quarters of the

average length (3.17) of an entire kernel (3.9)
Note 1 to entry: See Figure 1.
3.12
broken kernel

part of a kernel with a length less than three-quarters of the average length (3.17) of an entire kernel

(3.9) but which does not pass through a test sieve with round apertures having a diameter of 1,4 mm

3.13
large broken kernel

part of a kernel with a length less than three-quarters of but greater than one-half of the average length

(3.17) of an entire kernel (3.9)
Note 1 to entry: See Figure 1.
3.14
medium broken kernel

part of a kernel with a length less than or equal to one-half of but greater than one-quarter of the

average length (3.17) of an entire kernel (3.9)
Note 1 to entry: See Figure 1.
3.15
small broken kernel

part of a kernel with a length less than or equal to one-quarter of the average length (3.17) of an entire

kernel (3.9) but which does not pass through a test sieve with round apertures having a diameter of

1,4 mm
Note 1 to entry: See Figure 1.
3.16
chip

part of a kernel that passes through a test sieve with round apertures having a diameter of 1,4 mm

[1]
Note 1 to entry: The test sieve should conform to ISO 5223 .
3.17
average length

arithmetic mean of the length of the entire kernels (3.9) that are not immature or malformed (3.25) in the

test sample
Note 1 to entry: Calculation of the average length is given in ISO 11746.
3.18
extraneous matter

inorganic and organic non-toxic matter other than kernels or parts of husked rice (3.2) or milled rice

(3.3)
3.19
inorganic extraneous matter
matter, such as stone, sand and dust
3.20
organic extraneous matter
matter including edible and non-edible
© ISO 2021 – All rights reserved 3
---------------------- Page: 13 ----------------------
SIST EN ISO 7301:2023
ISO 7301:2021(E)
3.21
edible organic extraneous matter
matter, such as bran, foreign seeds, flour lumps
3.22
non-edible organic extraneous matter
matter, such as husk, straw
3.23
heat-damaged kernel
head rice (3.11) or broken kernel (3.12) that has changed its normal colour

Note 1 to entry: This category includes kernels that are a yellow to dark yellow colour in the case of non-parboiled

rice and an orange to dark orange colour in the case of parboiled rice (3.4), likely due to a microbiological

alteration.
3.24
damaged kernel

head rice (3.11) or broken kernel (3.12) showing evident deterioration due to moisture, pests, disease or

other causes, but excluding heat-damaged kernels (3.23)
3.25
immature or malformed kernel
head rice (3.11) or broken kernel (3.12) that is unripe or badly developed
3.26
chalky kernel

head rice (3.11) or broken kernel (3.12) of non-parboiled rice, except waxy rice (3.7), whose whole

surface has an opaque and floury appearance
3.27
red kernel

head rice (3.11) or broken kernel (3.12) having a red bran covering more than one-quarter of its surface

3.28
red-streaked kernel

head rice (3.11) or broken kernel (3.12) with red bran streaks of a length greater than or equal to one-

half of its length but where the surface covered by these red streaks is less than one-quarter of the total

surface
3.29
partly gelatinized kernel

head rice (3.11) or broken kernel (3.12) of parboiled rice (3.4) that is not fully gelatinized and shows a

distinct white opaque area
3.30
peck

head rice (3.11) or broken kernel (3.12) of parboiled rice (3.4) of which more than one-quarter of the

surface is dark brown or black in colour due to the parboiling process
3.31
stress-cracked kernel

whole kernel (3.10) non-parboiled with an uninterrupted stress-crack line covering at least three

quarters of the kernel width
4 © ISO 2021 – All rights reserved
---------------------- Page: 14 ----------------------
SIST EN ISO 7301:2023
ISO 7301:2021(E)
4  Specifications
4.1  General, sensory and health specifications

Kernels of rice, husked or milled, broken or not, shall be sound, clean and free from foreign odours or

odour which indicates deterioration. They shall also be free from toxic or any harmful matter.

The level of additives and pesticides and other contaminants shall not exceed the maximum applicable

limits.

NOTE These limits can vary depending on the national regulations of the country of destination and in the

[7]
case of their absence do not exceed the CODEX maximum limits .
Living insects which are visible to the naked eye shall not be present.
4.2  Physical and chemical specifications
4.2.1 The mass fraction of moisture shall be not greater than 15,0 %.

NOTE Lower moisture contents can be required for certain destinations depending on the climate, duration

[2] [3] [4]

of transport and storage. For further details, see ISO 6322-1 , ISO 6322-2 and ISO 6322-3 .

4.2.2 The physical specifications shall be determined in accordance with the method specified in

Annex A and shall not exceed the limits given in Table 1.
Table 1 — Limits of physical specifications
Non-parboiled Non-parboiled Parboiled  Parboiled
Specification
husked rice milled rice husked rice milled rice
Inorganic extraneous matter,
0,5 0,5 0,5 0,5
% mass fraction
Organic extraneous matter,
1,0 0,5 1,0 0,5
% mass fraction
Edible organic extraneous
1,0 0,5 1,0 0,5
matter
Non-edible organic extraneous
0,5 0,5 0,5 0,5
matter
Paddy, % mass fraction 2,5 0,3 2,5 0,3
Non-parboiled husked rice,
— 1,0 1,0 1,0
% mass fraction
Non-parboiled milled rice,
1,0 — 1,0 1,0
% mass fraction
Parboiled husked rice,
1,0 1,0 — 1,0
% mass fraction
Parboiled milled rice,
1,0 1,0 1,0 —
% mass fraction
Chip, % mass fraction 0,1 0,1 0,1 0,1
Key
— not applicable
After milling.
Full red husked (cargo) rice is not considered here.

The percentage of stressed cracked kernels is agreed between the supplier and the customer and depends on the

intended use of rice. The determination of stress-cracked kernels shall be carried out in accordance with Annex C.

© ISO 2021 – All rights reserved 5
---------------------- Page: 15 ----------------------
SIST EN ISO 7301:2023
ISO 7301:2021(E)
Table 1 (continued)
Non-parboiled Non-parboiled Parboiled  Parboiled
Specification
husked rice milled rice husked rice milled rice
Heat-damaged kernel,
a a
2,0 2,0 2,0 2,0
% mass fraction
Damaged kernel,
4,0 3,0 4,0 3,0
% mass fraction
Immature or malformed ker-
8,0 2,0 8,0 2,0
nel, % mass fraction
Chalky kernel, % mass fraction 5,0 5,0 — —
...

SLOVENSKI STANDARD
oSIST prEN ISO 7301:2022
01-september-2022
Riž - Specifikacija (ISO 7301:2021)
Rice - Specification (ISO 7301:2021)
Reis - Anforderungen (ISO 7301:2021)
Riz - Spécifications (ISO 7301:2021)
Ta slovenski standard je istoveten z: prEN ISO 7301
ICS:
67.060 Žita, stročnice in proizvodi iz Cereals, pulses and derived
njih products
oSIST prEN ISO 7301:2022 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN ISO 7301:2022
---------------------- Page: 2 ----------------------
oSIST prEN ISO 7301:2022
INTERNATIONAL ISO
STANDARD 7301
Fourth edition
2021-06
Rice — Specification
Riz — Spécifications
Reference number
ISO 7301:2021(E)
ISO 2021
---------------------- Page: 3 ----------------------
oSIST prEN ISO 7301:2022
ISO 7301:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved
---------------------- Page: 4 ----------------------
oSIST prEN ISO 7301:2022
ISO 7301:2021(E)
Contents  Page

Foreword ........................................................................................................................................................................................................................................iv

1  Scope ................................................................................................................................................................................................................................. 1

2  Normative references ...................................................................................................................................................................................... 1

3  Terms and definitions ..................................................................................................................................................................................... 1

4  Specifications ........................................................................................................................................................................................................... 5

4.1 General, sensory and health specifications .................................................................................................................... 5

4.2 Physical and chemical specifications ................................................................................................................................... 5

4.3 Minimum specifications subject to agreement ........................................................................................................... 6

5  Test methods ............................................................................................................................................................................................................. 6

6  Packaging ..................................................................................................................................................................................................................... 7

Annex A (normative) Methods of analysis for rice specifications .......................................................................................... 8

Annex B (normative) Determination of waxy rice in parboiled rice ................................................................................18

Annex C (normative) Determination of stress-cracked kernel in non-parboiled rice ..................................20

Bibliography .............................................................................................................................................................................................................................21

© ISO 2021 – All rights reserved iii
---------------------- Page: 5 ----------------------
oSIST prEN ISO 7301:2022
ISO 7301:2021(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/ patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/

iso/ foreword .html.

This document was prepared by Technical Committee ISO/TC 34, Food products, Subcommittee SC 4,

Cereals and pulses.

This fourth edition cancels and replaces the third edition (ISO 7301:2011), which has been technically

revised. The main changes compared with the previous edition are as follows:
— the terms and definitions have been updated;

— the method for the determination of the average length originally given in A.4.3.2 and A.4.3.3 has

been deleted, and a reference to ISO 11746 has been added.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2021 – All rights reserved
---------------------- Page: 6 ----------------------
oSIST prEN ISO 7301:2022
INTERNATIONAL STANDARD ISO 7301:2021(E)
Rice — Specification
1  Scope

This document establishes the minimum specifications for rice (Oryza sativa L.) that is subject to

international trade. It is applicable to husked rice and milled rice (aromatic and not aromatic), parboiled

or not, intended for direct human consumption. It does not apply to other products derived from rice

nor to waxy rice (glutinous rice).
2  Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 712, Cereals and cereal products — Determination of moisture content — Reference method

ISO 11746, Rice — Determination of biometric characteristics of kernels
3  Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1
paddy
paddy rice
rough rice
rice retaining its husk after threshing
3.2
husked rice
brown rice
cargo rice
paddy (3.1) from which only the husk has been removed

Note 1 to entry: The processes of husking and handling can result in some loss of bran.

3.3
milled rice
white rice

husked rice (3.2) from which some or all of the bran and embryo have been removed by mechanical

milling
3.4
parboiled rice

rice subjected to a hydrothermical treatment so that the starch is fully gelatinized, followed by a drying

process
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oSIST prEN ISO 7301:2022
ISO 7301:2021(E)
3.5
parboiled milled rice

milled rice (3.3) obtained from paddy (3.1) or husked rice (3.2) subjected to a hydrothermical treatment

so that the starch is fully gelatinized, followed by a drying process
3.6
parboiled husked rice

husked rice (3.2) obtained from paddy (3.1) subjected to a hydrothermical treatment so that the starch

is fully gelatinized, followed by a drying process
3.7
waxy rice
glutinous rice
varieties of rice whose kernels have a white and opaque appearance

Note 1 to entry: The starch of waxy rice contains an extremely low level of amylose, consisting almost entirely of

amylopectin. The kernels have a tendency to stick together after cooking.
3.8
aromatic rice

variety of rice releasing a particular aroma (e.g. roasted nuts, popcorn) that increases during cooking

3.9
entire kernel
husked or milled kernel without any broken part
3.10
whole kernel

husked or milled kernel with a length greater than or equal to nine-tenths of the average length (3.17)

of an entire kernel (3.9)
Note 1 to entry: See Figure 1.
Key
1 whole kernel (3.10) 5 head rice (3.11)
2 large broken kernel (3.13) 6 broken kernel (3.12)
3 medium broken kernel (3.14) 7 chip (3.16)
4 small broken kernel (3.15) average length (3.17)
Figure 1 — Size of kernel, broken kernel and chip
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oSIST prEN ISO 7301:2022
ISO 7301:2021(E)
3.11
head rice

whole kernel (3.10) or part of a kernel with a length greater than or equal to three-quarters of the

average length (3.17) of an entire kernel (3.9)
Note 1 to entry: See Figure 1.
3.12
broken kernel

part of a kernel with a length less than three-quarters of the average length (3.17) of an entire kernel

(3.9) but which does not pass through a test sieve with round apertures having a diameter of 1,4 mm

3.13
large broken kernel

part of a kernel with a length less than three-quarters of but greater than one-half of the average length

(3.17) of an entire kernel (3.9)
Note 1 to entry: See Figure 1.
3.14
medium broken kernel

part of a kernel with a length less than or equal to one-half of but greater than one-quarter of the

average length (3.17) of an entire kernel (3.9)
Note 1 to entry: See Figure 1.
3.15
small broken kernel

part of a kernel with a length less than or equal to one-quarter of the average length (3.17) of an entire

kernel (3.9) but which does not pass through a test sieve with round apertures having a diameter of

1,4 mm
Note 1 to entry: See Figure 1.
3.16
chip

part of a kernel that passes through a test sieve with round apertures having a diameter of 1,4 mm

[1]
Note 1 to entry: The test sieve should conform to ISO 5223 .
3.17
average length

arithmetic mean of the length of the entire kernels (3.9) that are not immature or malformed (3.25) in the

test sample
Note 1 to entry: Calculation of the average length is given in ISO 11746.
3.18
extraneous matter

inorganic and organic non-toxic matter other than kernels or parts of husked rice (3.2) or milled rice

(3.3)
3.19
inorganic extraneous matter
matter, such as stone, sand and dust
3.20
organic extraneous matter
matter including edible and non-edible
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oSIST prEN ISO 7301:2022
ISO 7301:2021(E)
3.21
edible organic extraneous matter
matter, such as bran, foreign seeds, flour lumps
3.22
non-edible organic extraneous matter
matter, such as husk, straw
3.23
heat-damaged kernel
head rice (3.11) or broken kernel (3.12) that has changed its normal colour

Note 1 to entry: This category includes kernels that are a yellow to dark yellow colour in the case of non-parboiled

rice and an orange to dark orange colour in the case of parboiled rice (3.4), likely due to a microbiological

alteration.
3.24
damaged kernel

head rice (3.11) or broken kernel (3.12) showing evident deterioration due to moisture, pests, disease or

other causes, but excluding heat-damaged kernels (3.23)
3.25
immature or malformed kernel
head rice (3.11) or broken kernel (3.12) that is unripe or badly developed
3.26
chalky kernel

head rice (3.11) or broken kernel (3.12) of non-parboiled rice, except waxy rice (3.7), whose whole

surface has an opaque and floury appearance
3.27
red kernel

head rice (3.11) or broken kernel (3.12) having a red bran covering more than one-quarter of its surface

3.28
red-streaked kernel

head rice (3.11) or broken kernel (3.12) with red bran streaks of a length greater than or equal to one-

half of its length but where the surface covered by these red streaks is less than one-quarter of the total

surface
3.29
partly gelatinized kernel

head rice (3.11) or broken kernel (3.12) of parboiled rice (3.4) that is not fully gelatinized and shows a

distinct white opaque area
3.30
peck

head rice (3.11) or broken kernel (3.12) of parboiled rice (3.4) of which more than one-quarter of the

surface is dark brown or black in colour due to the parboiling process
3.31
stress-cracked kernel

whole kernel (3.10) non-parboiled with an uninterrupted stress-crack line covering at least three

quarters of the kernel width
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4  Specifications
4.1  General, sensory and health specifications

Kernels of rice, husked or milled, broken or not, shall be sound, clean and free from foreign odours or

odour which indicates deterioration. They shall also be free from toxic or any harmful matter.

The level of additives and pesticides and other contaminants shall not exceed the maximum applicable

limits.

NOTE These limits can vary depending on the national regulations of the country of destination and in the

[7]
case of their absence do not exceed the CODEX maximum limits .
Living insects which are visible to the naked eye shall not be present.
4.2  Physical and chemical specifications
4.2.1 The mass fraction of moisture shall be not greater than 15,0 %.

NOTE Lower moisture contents can be required for certain destinations depending on the climate, duration

[2] [3] [4]

of transport and storage. For further details, see ISO 6322-1 , ISO 6322-2 and ISO 6322-3 .

4.2.2 The physical specifications shall be determined in accordance with the method specified in

Annex A and shall not exceed the limits given in Table 1.
Table 1 — Limits of physical specifications
Non-parboiled Non-parboiled Parboiled  Parboiled
Specification
husked rice milled rice husked rice milled rice
Inorganic extraneous matter,
0,5 0,5 0,5 0,5
% mass fraction
Organic extraneous matter,
1,0 0,5 1,0 0,5
% mass fraction
Edible organic extraneous
1,0 0,5 1,0 0,5
matter
Non-edible organic extraneous
0,5 0,5 0,5 0,5
matter
Paddy, % mass fraction 2,5 0,3 2,5 0,3
Non-parboiled husked rice,
— 1,0 1,0 1,0
% mass fraction
Non-parboiled milled rice,
1,0 — 1,0 1,0
% mass fraction
Parboiled husked rice,
1,0 1,0 — 1,0
% mass fraction
Parboiled milled rice,
1,0 1,0 1,0 —
% mass fraction
Chip, % mass fraction 0,1 0,1 0,1 0,1
Key
— not applicable
After milling.
Full red husked (cargo) rice is not considered here.

The percentage of stressed cracked kernels is agreed between the supplier and the customer and depends on the

intended use of rice. The determination of stress-cracked kernels shall be carried out in accordance with Annex C.

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Table 1 (continued)
Non-parboiled Non-parboiled Parboiled  Parboiled
Specification
husked rice milled rice husked rice milled rice
Heat-damaged kernel,
a a
2,0 2,0 2,0 2,0
% mass fraction
Damaged kernel,
4,0 3,0 4,0 3,0
% mass fraction
Immature or malformed ker-
8,0 2,0 8,0 2,0
nel, % mass fraction
Chalky kernel, % mass fraction 5,0 5,0 — —
Red kernel and red-streaked
b b
12,0 12,0 12,0 12,0
kernel, % mass fraction
Partly gelatinized kernel,
— — 11,0 11,0
% mass fraction
Peck, % mass fraction — — 4,0 2,0
a a
Waxy rice, % mass fraction 1,0 1,0 1,0 1,0
Stress-cracked kernel — — — —
Key
— not applicable
After milling.
Full red husked (cargo) rice is not considered here.

The percentage of stressed cracked kernels is agreed between the supplier and the customer and depends on the

intended use of rice. The determination of stress-cracked kernels shall be carried out in accordance with Annex C.

4.3  Minimum specifications subject to agreement

The specifications shall be clearly defined in any agreement between the supplier and the customer and

shall include as a minimum:

a) the total percentage of broken kernels permitted, classified according to the agreed categories, and

the relative proportion of each category;

b) the total percentage permitted, not exceeding the maximum values for the specifications detailed

in Table 1, determined in accordance with the method described in Annex A.

For a specific kind of rice or a specific variety of rice, in order to evaluate the homogeneity of the lot,

the agreement can specify both the average length of an entire kernel and its related coefficient of

variation, C , in %, determined by using Formula (1):
C =×100 (1)
where
s is the standard deviation;
is the average length.

Specifications shall be determined in accordance with the method described in Annex A.

5  Test methods
The moisture content shall be determined in accordance with ISO 712.
The biometric characterization shall be determined in accordance with ISO 11746.
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oSIST prEN ISO 7301:2022
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The other tests shall be carried out using the methods specified in Annexes A and B.

6  Packaging
The packaging mater
...

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