EN ISO 734:2023
(Main)Oilseed meals - Determination of oil content - Extraction method with hexane (or light petroleum) (ISO 734:2023)
Oilseed meals - Determination of oil content - Extraction method with hexane (or light petroleum) (ISO 734:2023)
This document 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 734:2023)
Dieses Dokument legt ein Verfahren zur Bestimmung des Hexanextrakts (oder des Petroletherextrakts), genannt „Ölgehalt“, von Extraktionsschroten (ausgeschlossen sind Mischprodukte) fest, die bei der Ölgewinnung durch Pressen oder bei Lösemittelextraktionen aus Ölsamen anfallen.
Tourteaux de graines oléagineuses - Détermination de la teneur en huile - Méthode par extraction à l'hexane (ou à l'éther de pétrole) (ISO 734:2023)
Le présent document 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 734:2023)
Standard ISO 734:2015 opredeljuje metodo za ugotavljanje ekstrakta heksana (ali petroletra), imenovano »vsebnost olja«, v ostankih (vključno z mešanimi izdelki), pridobljenih z ekstrakcijo olja iz semen oljnic pod tlakom ali s pomočjo topil.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-maj-2023
Obroki iz semen oljnic - Določevanje vsebnosti olja - Metoda ekstrakcije s
heksanom (ali petroletrom) (ISO 734:2023)
Oilseed meals - Determination of oil content - Extraction method with hexane (or light
petroleum) (ISO 734:2023)
Ölsamenschrote - Bestimmung des Ölgehaltes - Extraktionsverfahren mit Hexan (oder
Petrolether) (ISO 734:2023)
Tourteaux de graines oléagineuses - Détermination de la teneur en huile - Méthode par
extraction à l'hexane (ou à l'éther de pétrole) (ISO 734:2023)
Ta slovenski standard je istoveten z: EN ISO 734:2023
ICS:
67.200.20 Oljnice Oilseeds
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 734
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2023
EUROPÄISCHE NORM
ICS 67.200.20 Supersedes EN ISO 734:2015
English Version
Oilseed meals - Determination of oil content - Extraction
method with hexane (or light petroleum) (ISO 734:2023)
Tourteaux de graines oléagineuses - Détermination de Ölsamenschrote - Bestimmung des Ölgehaltes -
la teneur en huile - Méthode par extraction à l'hexane Extraktionsverfahren mit Hexan (oder Petrolether)
(ou à l'éther de pétrole) (ISO 734:2023) (ISO 734:2023)
This European Standard was approved by CEN on 13 February 2023.
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
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 734:2023 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 734:2023) has been prepared by Technical Committee ISO/TC 34 "Food
products" in collaboration with Technical Committee CEN/TC 307 “Oilseeds, vegetable and animal fats
and oils and their by-products - Methods of sampling and analysis” 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 August 2023, and conflicting national standards shall
be withdrawn at the latest by August 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.
This document supersedes EN ISO 734:2015.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. 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 734:2023 has been approved by CEN as EN ISO 734:2023 without any modification.
INTERNATIONAL ISO
STANDARD 734
Third edition
2023-01
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)
Reference number
ISO 734:2023(E)
ISO 734:2023(E)
© ISO 2023
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
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Published in Switzerland
ii
ISO 734:2023(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 . 2
7 Sampling . 2
8 Preparation of test sample . 3
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 . 4
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 . 7
Bibliography . 8
iii
ISO 734:2023(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
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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
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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 2, Oleaginous seeds and fruits and oilseed meals, in collaboration with the European Committee for
Standardization (CEN) Technical Committee CEN/TC 307, Oilseeds, vegetable and animal fats and oils and
their by-products — Methods of sampling and analysis, in accordance with the Agreement on technical
cooperation between ISO and CEN (Vienna Agreement).
This third edition cancels and replaces the second edition (ISO 734:2015), which has been technically
revised in order to include some safety warnings.
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 734:2023(E)
Introduction
A method for the det
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