prEN ISO 734

Oilseed meals - Determination of oil content - Extraction method with hexane (or light petroleum) (ISO/DIS 734:2022)

ISO 734:2015 specifies a method for the determination of the hexane extract (or light-petroleum extract), called "oil content", of meals (excluding compounded products) obtained by the extraction of oil from oilseeds by pressure or solvents.

Ölsamenschrote – Bestimmung des Ölgehaltes – Extraktionsverfahren mit Hexan (oder Petrolether) (ISO/DIS 734:2022)

Tourteaux de graines oléagineuses - Détermination de la teneur en huile - Méthode par extraction à l'hexane (ou à l'éther de pétrole) (ISO/DIS 734:2022)

ISO 734:2015 spécifie une méthode de détermination de l'extrait à l'hexane (ou à l'éther de pétrole), dite «teneur en huile» des tourteaux (à l'exclusion des produits composés) provenant de l'extraction de l'huile des graines oléagineuses par pression ou solvant.

Obroki iz semen oljnic - Določevanje vsebnosti olja - Metoda ekstrakcije s heksanom (ali petroletrom) (ISO/DIS 734:2022)

General Information

• Status: Not Published
• ICS: 67.200.20 - Oilseeds
• Technical Committee: CEN/TC 307 - Oilseeds, vegetables and animal fats and oils and their by-products - Methods of sampling and analys
• Ref Project: oSIST prEN ISO 734:2022 - Oilseed meals - Determination of oil content - Extraction method with hexane (or light petroleum) (ISO/DIS 734:2022)

RELATIONS

• Revised: EN ISO 734:2015 - Oilseed meals - Determination of oil content - Extraction method with hexane (or light petroleum) (ISO 734:2015)
• Effective Date: 24-Nov-2021

Standards Content (sample)

SLOVENSKI STANDARD
oSIST prEN ISO 734:2022
01-maj-2022
Obroki iz semen oljnic - Določevanje vsebnosti olja - Metoda ekstrakcije s
heksanom (ali petroletrom) (ISO/DIS 734:2022)

Oilseed meals - Determination of oil content - Extraction method with hexane (or light

petroleum) (ISO/DIS 734:2022)

Ölsamenschrote - Bestimmung des Ölgehaltes - Extraktionsverfahren mit Hexan (oder

Petrolether) (ISO/DIS 734:2022)

Tourteaux de graines oléagineuses - Détermination de la teneur en huile - Méthode par

extraction à l'hexane (ou à l'éther de pétrole) (ISO/DIS 734:2022)
Ta slovenski standard je istoveten z: prEN ISO 734
ICS:
67.200.20 Oljnice Oilseeds
oSIST prEN ISO 734:2022 en,fr,de

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

---------------------- Page: 1 ----------------------
oSIST prEN ISO 734:2022
---------------------- Page: 2 ----------------------
oSIST prEN ISO 734:2022
DRAFT INTERNATIONAL STANDARD
ISO/DIS 734
ISO/TC 34/SC 2 Secretariat: AFNOR
Voting begins on: Voting terminates on:
2022-03-16 2022-06-08
Oilseed meals — Determination of oil content — Extraction
method with hexane (or light petroleum)

Tourteaux de graines oléagineuses — Détermination de la teneur en huile — Méthode par extraction à

l'hexane (ou à l'éther de pétrole)
ICS: 67.200.20
This document is circulated as received from the committee secretariat.
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
ISO/CEN PARALLEL PROCESSING
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 734:2022(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION. © ISO 2022
---------------------- Page: 3 ----------------------
oSIST prEN ISO 734:2022
ISO/DIS 734:2022(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2022

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: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
© ISO 2022 – All rights reserved
---------------------- Page: 4 ----------------------
oSIST prEN ISO 734:2022
ISO/DIS 734:2022(E)
Contents Page

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

Introduction .................................................................................................................................................................................................................................v

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

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

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

4 Principle ........................................................................................................................................................................................................................ 1

5 Reagents ........................................................................................................................................................................................................................ 1

6 Apparatus .................................................................................................................................................................................................................... 1

7 Sampling ....................................................................................................................................................................................................................... 2

8 Preparation of test sample ........................................................................................................................................................................ 2

9 Procedure ....................................................................................................................................................................................................................3

9.1 Number of determinations .......................................................................................................................................................... 3

9.2 Test portion ............................................................................................................................................................................................... 3

9.3 Pre-drying .................................................................................................................................................................................................. 3

9.4 Determination ......................................................................................................................................................................................... 3

9.4.1 Preparation of the flask .................. ......................................................................................................................... ..... 3

9.4.2 First extraction .................................................................................................................................................................... 3

9.4.3 Second extraction .............................................................................................................................................................. 3

9.4.4 Elimination of solvent and weighing of the extract ............................................................................ 4

10 Expression of results ....................................................................................................................................................................................... 4

11 Precision ....................................................................................................................................................................................................................... 5

11.1 Interlaboratory test ......... ................................................................................................................................................................... 5

11.2 Repeatability ............................................................................................................................................................................................ 5

11.3 Reproducibility ....................................................................................................................................................................................... 5

12 Test report .................................................................................................................................................................................................................. 5

Annex A (informative) Results of an interlaboratory test ............................................................................................................ 6

Bibliography ................................................................................................................................................................................................................................ 7

iii
© ISO 2022 – All rights reserved
---------------------- Page: 5 ----------------------
oSIST prEN ISO 734:2022
ISO/DIS 734:2022(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 on the meaning of ISO specific terms and expressions related to conformity

assessment, as well as information about ISO's adherence to the WTO principles in the Technical

Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information

The committee responsible for this document is ISO/TC 34, Food products, Subcommittee SC 2,

Oleaginous seeds and fruits and oilseed meals.

This third edition cancels and replaces ISO 734:2015, which has been revised in order to include some

safety warnings.
© ISO 2022 – All rights reserved
---------------------- Page: 6 ----------------------
oSIST prEN ISO 734:2022
ISO/DIS 734:2022(E)
Introduction

A method for the determination of the oil content of oilseeds has been specified in ISO 659. It is

therefore necessary to provide for control of oil production by establishing a reference method for the

determination of the oil content of oilseed meals in the same way.
© ISO 2022 – All rights reserved
---------------------- Page: 7 ----------------------
oSIST prEN ISO 734:2022
---------------------- Page: 8 ----------------------
oSIST prEN ISO 734:2022
DRAFT INTERNATIONAL STANDARD ISO/DIS 734:2022(E)
Oilseed meals — Determination of oil content — Extraction
method with hexane (or light petroleum)
1 Scope

This International Standard specifies a method for the determination of the hexane extract (or light-

petroleum extract), called “oil content”, of meals (excluding compounded products) obtained by the

extraction of oil from oilseeds by pressure or solvents.
2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable for its application. For dated references, only the edition cited applies. For undated

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

ISO 771, Oilseed meals — Determination of moisture and volatile matter content
ISO 5502, Oilseed residues — Preparation of test samples
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
oil content

all of the substances extracted under the operating conditions specified in this International Standard,

and expressed as a mass fraction, in percent, of the product as received
Note 1 to entry: The oil content may also be expressed relative to dry matter.
4 Principle

A test portion of the product is extracted in a suitable apparatus, with technical hexane o

...