SIST EN ISO 734-1:2007
(Main)Oilseed meals - Determination of oil content - Part 1: Extraction method with hexane (or light petroleum) (ISO 734-1:2006)
Oilseed meals - Determination of oil content - Part 1: Extraction method with hexane (or light petroleum) (ISO 734-1:2006)
This International Standard specifies a method for the determination of the nitrogen content of cereals, pulses and derived products, according to the Kjeldahl method, and a method for calculating the crude protein content. The method does not distinguish between protein nitrogen and non-protein nitrogen. If it is important to determine the non-protein nitrogen content, an appropriate method can be applied.
Ölsamenschrote - Bestimmung des Ölgehaltes - Teil 1: Extraktionsverfahren mit Hexan (oder Petrolether) (ISO 734-1:2006)
Dieser Teil von ISO 734 legt ein Verfahren zur Bestimmung des Hexanextrakts (oder des Petroletherextrakts), genannt Ölgehalt, von Extraktionsschroten (ausgeschlossen sind Mischprodukte) fest, die bei der Ölgewin¬nung durch Pressen oder Lösungsmittelextraktionen aus Ölsamen anfallen.
Tourteaux de graines oléagineuses - Détermination de la teneur en huile - Partie 1: Méthode par extraction a l'hexane (ou a l'éther de pétrole) (ISO 734-1:2006)
L'ISO 734-1:2006 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.
Ostanki tropin - Določevanje olja - 1. del: Metoda ekstrakcije s heksanom (ali petroletrom) (ISO 734-1:2006)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 734-1:2007
01-marec-2007
1DGRPHãþD
SIST EN ISO 734-1:2001
2VWDQNLWURSLQ'RORþHYDQMHROMDGHO 0HWRGDHNVWUDNFLMHVKHNVDQRP DOL
SHWUROHWURP ,62
Oilseed meals - Determination of oil content - Part 1: Extraction method with hexane (or
light petroleum) (ISO 734-1:2006)
Ölsamenschrote - Bestimmung des Ölgehaltes - Teil 1: Extraktionsverfahren mit Hexan
(oder Petrolether) (ISO 734-1:2006)
Tourteaux de graines oléagineuses - Détermination de la teneur en huile - Partie 1:
Méthode par extraction a l'hexane (ou a l'éther de pétrole) (ISO 734-1:2006)
Ta slovenski standard je istoveten z: EN ISO 734-1:2006
ICS:
67.200.20 Oljnice Oilseeds
SIST EN ISO 734-1:2007 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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EUROPEAN STANDARD
EN ISO 734-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2006
ICS 67.200.20 Supersedes EN ISO 734-1:2000
English Version
Oilseed meals - Determination of oil content - Part 1: Extraction
method with hexane (or light petroleum) (ISO 734-1:2006)
Tourteaux de graines oléagineuses - Détermination de la Ölsamenschrote - Bestimmung des Ölgehaltes - Teil 1:
teneur en huile - Partie 1: Méthode par extraction à Extraktionsverfahren mit Hexan (oder Petrolether) (ISO
l'hexane (ou à l'éther de pétrole) (ISO 734-1:2006) 734-1:2006)
This European Standard was approved by CEN on 28 October 2006.
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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,
Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2006 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 734-1:2006: E
worldwide for CEN national Members.
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EN ISO 734-1:2006 (E)
Foreword
This document (EN ISO 734-1:2006) has been prepared by Technical Committee ISO/TC 34
"Agricultural 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 document supersedes EN ISO 734-1:2000.
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 2007, and conflicting national standards
shall be withdrawn at the latest by May 2007.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary,
Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
Endorsement notice
The text of ISO 734-1:2006 has been approved by CEN as EN ISO 734-1:2006 without any
modifications.
2
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INTERNATIONAL ISO
STANDARD 734-1
Second edition
2006-11-01
Oilseed meals — Determination of oil
content —
Part 1:
Extraction method with hexane (or light
petroleum)
Tourteaux de graines oléagineuses — Détermination de la teneur en
huile —
Partie 1: Méthode par extraction à l'hexane (ou à l'éther de pétrole)
Reference number
ISO 734-1:2006(E)
©
ISO 2006
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ISO 734-1:2006(E)
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ii © ISO 2006 – All rights reserved
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ISO 734-1:2006(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 734-1 was prepared by Technical Committee ISO/TC 34, Food products, Subcommittee SC 2,
Oleaginous seeds and fruits and oilseed meals.
This second edition cancels and replaces the first edition (ISO 734-1:1998), Annex A of which has been
technically revised.
ISO 734 consists of the following parts, under the general title Oilseed meals — Determination of oil content:
⎯ Part 1: Extraction method with hexane (or light petroleum)
⎯ Part 2: Rapid extraction method
© ISO 2006 – All rights reserved iii
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ISO 734-1:2006(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.
iv © ISO 2006 – All rights reserved
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INTERNATIONAL STANDARD ISO 734-1:2006(E)
Oilseed meals — Determination of oil content —
Part 1:
Extraction method with hexane (or light petroleum)
1 Scope
This part of ISO 734 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 referenced documents are indispensable for the application 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 771, Oilseed residues — 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 part of ISO 734, and expressed
as a mass fraction, in percent, of the product as received
NOTE 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 or, failing this, light
petroleum. The solvent is eliminated and the extract obtained is weighed.
5 Reagents
Use only reagents of recognized analytical grade, unless otherwise specified.
5.1 Technical hexane, n-hexane or light petroleum, essentially composed of hydrocarbons with six
carbon atoms.
Less than 5 % shall distil below 50 °C and more than 95 % between 50 °C and 70 °C.
For any of these solvents, the residue on complete evaporation shall not exceed 2 mg per 100 ml.
© ISO 2006 – All rights reserved 1
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ISO 734-1:2006(E)
6 Apparatus
Usual laboratory apparatus and, in particular, the following.
6.1 Mechanical grinder, easy to clean and allowing the meals to be ground, without heating and without
appreciable change in moisture, volatile matter and oil content, to obtain particles which pass completely
through a sieve of aperture size 1 mm.
1)
6.2 Mechanical microgrinder, of the Dangoumau type capable of producing a fineness of grinding of
oilseed meals of less than 160 µm, with the exception of the “shell” whose particles may reach 400 µm.
In laboratories where a microgrinder is not available, microgrinding of the ground sample (see 9.4.3) may be
replaced by trituration with a pestle and mortar, in the presence of about 10 g of
...
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