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BS EN ISO 17059:2019

BS EN ISO 17059:2019

$102.76

Oilseeds. Extraction of oil and preparation of methyl esters of triglyceride fatty acids for analysis by gas chromatography (Rapid method)

Published By Publication Date Number of Pages
BSI 2019 16
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This document specifies a rapid method for extraction of oil and for preparation of the methyl esters of fatty acids. The methyl esters thus obtained can be used for gas chromatography.

This document is applicable to the following oilseeds: rape and mustard with low erucic acid content (<Ã?Æ?ââ?¬Å¡Ã?â??Ã? 2Ã?Æ?ââ?¬Å¡Ã?â??Ã? %), sunflower, soya beans, linseed.

NOTE

Applying this rapid method to high erucic acid content rapeseed leads to an overestimation of erucic acid content by approximately a mass fraction of 1Ã?Æ?ââ?¬Å¡Ã?â??Ã? %. This difference was observed in ReferenceÃ?Æ?ââ?¬Å¡Ã?â??Ã? [ 6] and could be due to the partial extraction of the oil from the sample (yield around 70Ã?Æ?ââ?¬Å¡Ã?â??Ã? %). High content of erucic acid in triglycerides could increase their solubility in hexane because of the lipophilic effect of the carbon long-chain (C22). However, as this effect was not checked on a large set of high erucic rapeseed samples, it is not appropriate to apply a correction factor to the erucic acid content when analysing high erucic acid rapeseed.

PDF Catalog

PDF Pages PDF Title
2 National foreword
4 European foreword
Endorsement notice
6 Foreword
7 Introduction
9 1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents
10 6 Apparatus
7 Sampling
8 Procedure
8.1 Preparation of the test sample
11 8.2 Test portion
8.2.1 General
8.2.2 Case of grains having an oil content exceeding 30 % by mass (rape, mustard, sunflower and linseed)
8.2.3 Case of grains having an oil content between 15 % and 30 % by mass (soya beans)
8.3 Extraction of the oil
8.4 Filtration and drying of the extract
8.5 Preparation of the methyl esters
12 9 Test report
13 Annex A (normative) General analytical procedures
14 Bibliography

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BS EN ISO 17059:2019
$102.76