EN ISO 8292-1:2010

Animal and vegetable fats and oils - Determination of solid fat content by pulsed NMR - Part 1: Direct method (ISO 8292-1:2008)

ISO 8292-1:2008 specifies a direct method for the determination of solid fat content in animal and vegetable fats and oils (hereafter designated "fats") using low-resolution pulsed nuclear magnetic resonance spectrometry.
Two alternative thermal pre-treatments are specified: one for general purpose fats not exhibiting pronounced polymorphism and which stabilize mainly in the β'-polymorph; and one for fats similar to cocoa butter which exhibit pronounced polymorphism and stabilize in the β-polymorph. Additional thermal pre-treatments, which may be more suitable for specific purposes, are given in an informative annex.
The direct method is easy to carry out and is reproducible, but is not as accurate as the indirect method due to the approximate method of calculation.

Tierische und pflanzliche Fette und Öle - Bestimmung des Festanteils von Fett durch das Verfahren mit gepulster magnetischer Kernresonanz - Teil 1: Direktes Verfahren (ISO 8292-1:2008)

Dieser Teil von ISO 8292 legt ein direktes Verfahren zur Bestimmung des Festanteils von tierischen und
pflanzlichen Fetten und Ölen (nachfolgend als „Fette“ bezeichnet) mittels gepulster magnetischer Kernresonanz
(en: nuclear magnetic resonance, NMR) mit niedriger Auflösung fest.
Zwei alternative thermische Vorbehandlungen sind festgelegt: eine allgemeine Anwendung für Fette, die keine
ausgeprägte Polymorphie aufweisen und die in der β′-Polymorphie kristallisieren; und eine für
kakaobutterähnliche Fette, die eine ausgeprägte Polymorphie aufweisen und die in der β-Polymorphie
kristallisieren. Zusätzliche thermische Vorbehandlungen, die für bestimmte Zwecke geeigneter sein können,
sind in einem informativen Anhang angegeben.
Das direkte Verfahren ist einfach durchzuführen und reproduzierbar, aber es ist wegen des ungefähren
Berechnungsverfahrens nicht so genau wie das indirekte Verfahren.
ANMERKUNG Ein indirektes Verfahren ist in ISO 8292-2 festgelegt.

Corps gras d'origines animale et végétale - Détermination de la teneur en corps gras solides par RMN pulsée - Partie 1: Méthode directe (ISO 8292-1:2008)

L'ISO 8292-1:2008 spécifie une méthode directe pour la détermination de la teneur en corps gras solides dans des corps gras d'origine animale et végétale (appelés ci-après «corps gras») en utilisant un spectromètre de résonance magnétique nucléaire (RMN) pulsée à basse résolution.
Deux prétraitements thermiques possibles sont spécifiés: l'un pour les corps gras à usage général ne présentant pas de polymorphisme prononcé et qui se stabilisent principalement sous la forme polymorphe β', et l'autre pour des corps gras similaires au beurre de cacao qui présentent un polymorphisme prononcé et qui se stabilisent sous la forme polymorphe β. Des prétraitements thermiques supplémentaires, qui peuvent être plus adaptés pour des applications spécifiques, sont indiqués dans une annexe informative.
La méthode directe est facile à conduire et est reproductible, mais n'est pas aussi précise que la méthode indirecte en raison de la méthode de calcul approximative.

Živalske in rastlinske maščobe in olja - Določevanje trdnih maščob s pulzno jedrsko magnetno resonanco - 1. del: Neposredna metoda (ISO 8292-1:2008)

Ta del ISO 8292 določa direktno metodo za določevanje trdnih maščob v živalskih in rastlinskih maščobah in oljih (v nadaljevanju navedeno kot »maščobe«) z nizko resolucijsko pulzno jedrsko magnetsko resonančno (NMR) spektrometrijo. Določeni sta dve alternativni toplotni predobdelavi:  Ena za maščobe za splošno uporabo, ki ne izkazujejo poudarjenega polimorfizma in se stabilizirajo predvsem v  polimorfih; in ena za maščobe, ki so podobne kokosovemu maslu in ki izkazujejo poudarjen polimorfizem ter se stabilizirajo v  polimorfih. Dodatne toplotne predobdelave, ki so lahko bolj primerne za določene namene, so podane v informativnem dodatku.  Neposredna metoda se zlahka izvede in je ponovljiva, vendar ni tako natančna kot posredna metoda zaradi približnih metod izračuna. OPOMBA: Posredna metoda je določena v ISO 8292-2.

General Information

• Status: Published
• Publication Date: 20-Apr-2010
• Withdrawal Date: 30-Oct-2010
• ICS: 67.200.10 - Animal and vegetable fats and oils
• Technical Committee: CEN/TC 307 - Oilseeds, vegetables and animal fats and oils and their by-products - Methods of sampling and analys
• Drafting Committee: CEN/TC 307 - Oilseeds, vegetables and animal fats and oils and their by-products - Methods of sampling and analys
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 21-Apr-2010
• Due Date: 21-Apr-2010
• Completion Date: 21-Apr-2010
• Ref Project: SIST EN ISO 8292-1:2010 - Animal and vegetable fats and oils - Determination of solid fat content by pulsed NMR - Part 1: Direct method (ISO 8292-1:2008)

Relations

• Replaces: EN ISO 8292:1995 - Animal and vegetable fats and oils - Determination of solid fat content - Pulsed nuclear magnetic resonance method (ISO 8292:1991)
• Effective Date: 08-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2010
1DGRPHãþD
SIST EN ISO 8292:1998
äLYDOVNHLQUDVWOLQVNHPDãþREHLQROMD'RORþHYDQMHWUGQLKPDãþREVSXO]QR
MHGUVNRPDJQHWQRUHVRQDQFRGHO1HSRVUHGQDPHWRGD,62
Animal and vegetable fats and oils - Determination of solid fat content by pulsed NMR -
Part 1: Direct method (ISO 8292-1:2008)
Tierische und pflanzliche Fette und Öle - Bestimmung des Festanteils von Fett durch das
Verfahren mit gepulster magnetischer Kernresonanz - Teil 1: Direktes Verfahren (ISO
8292-1:2008)
Corps gras d'origines animale et végétale - Détermination de la teneur en corps gras
solides par RMN pulsée - Partie 1: Méthode directe (ISO 8292-1:2008)
Ta slovenski standard je istoveten z: EN ISO 8292-1:2010
ICS:
67.200.10 5DVWOLQVNHLQåLYDOVNH Animal and vegetable fats
PDãþREHLQROMD and oils
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 8292-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2010
ICS 67.200.10 Supersedes EN ISO 8292:1995
English Version
Animal and vegetable fats and oils - Determination of solid fat
content by pulsed NMR - Part 1: Direct method (ISO 8292-
1:2008)
Corps gras d'origines animale et végétale - Détermination Tierische und pflanzliche Fette und Öle - Bestimmung des
de la teneur en corps gras solides par RMN pulsée - Partie Festanteils von Fett durch das Verfahren mit gepulster
1: Méthode directe (ISO 8292-1:2008) magnetischer Kernresonanz - Teil 1: Direktes Verfahren
(ISO 8292-1:2008)
This European Standard was approved by CEN on 18 March 2010.

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 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 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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2010 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 8292-1:2010: E
worldwide for CEN national Members.

Contents Page
Foreword .3

Foreword
The text of ISO 8292-1:2008 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 8292-1:2010 by
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 October 2010, and conflicting national standards shall be withdrawn at
the latest by October 2010.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 8292:1995.
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, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 8292-1:2008 has been approved by CEN as a EN ISO 8292-1:2010 without any modification.

INTERNATIONAL ISO
STANDARD 8292-1
First edition
2008-04-01
Animal and vegetable fats and oils —
Determination of solid fat content by
pulsed NMR —
Part 1:
Direct method
Corps gras d'origines animale et végétale — Détermination de la teneur
en corps gras solides par RMN pulsée —
Partie 1: Méthode directe
Reference number
ISO 8292-1:2008(E)
©
ISO 2008
ISO 8292-1:2008(E)
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ii © ISO 2008 – All rights reserved

ISO 8292-1:2008(E)
Contents Page
Foreword. iv
1 Scope.1
2 Normative references.1
3 Terms and definitions .1
4 Symbols and abbreviated terms .2
5 Principle.3
6 Apparatus.3
7 Sampling.5
8 Procedure.5
8.1 Measurement protocol and test sample.5
8.2 Oven, water baths and temperature-controlled blocks .7
8.3 Determination of the conversion factor (where necessary).7
8.4 NMR spectrometer.8
8.5 Filling the measurement tubes.8
8.6 Removing the thermal history.8
8.7 Equilibrating at the initial temperature.8
8.8 Crystallization and tempering .9
8.9 Measuring the SFC .9
8.10 Number of determinations .10
8.11 Cleaning the measurement tubes .10
9 Expression of results.10
10 Precision.11
10.1 Interlaboratory test .11
10.2 Repeatability.11
10.3 Reproducibility.11
11 Test report.12
Annex A (informative) Results of interlaboratory tests.13
Annex B (informative) Theory of the direct method .23
Annex C (informative) Additional measurement protocols.25
Bibliography .27

ISO 8292-1:2008(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 8292-1 was prepared by Technical Committee ISO/TC 34, Food products, Subcommittee SC 11, Animal
and vegetable fats and oils.
This part of ISO 8292, together with ISO 8292-2, cancel and replace ISO 8292:1991.
ISO 8292 consists of the following parts, under the general title Animal and vegetable fats and oils —
Determination of solid fat content by pulsed NMR:
⎯ Part 1: Direct method
⎯ Part 2: Indirect method
iv © ISO 2008 – All rights reserved

INTERNATIONAL STANDARD ISO 8292-1:2008(E)

Animal and vegetable fats and oils — Determination of solid fat
content by pulsed NMR —
Part 1:
Direct method
1 Scope
This part of ISO 8292 specifies a direct method for the determination of solid fat content in animal and
vegetable fats and oils (hereafter designated “fats”) using low-resolution pulsed nuclear magnetic resonance
(NMR) spectrometry.
Two alternative thermal pre-treatments are specified: one for general purpose fats not exhibiting pronounced
polymorphism and which stabilize mainly in the β′-polymorph; and one for fats similar to cocoa butter which
exhibit pronounced polymorphism and stabilize in the β-polymorph. Additional thermal pre-treatments, which
may be more suitable for specific purposes, are given in an informative annex.
The direct method is easy to carry out and is reproducible, but is not as accurate as the indirect method due to
the approximate method of calculation.
NOTE An indirect method is specified in ISO 8292-2.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For u
...