DIN Standards Committee Food and Agricultural Products
DIN EN ISO 29841
Vegetable fats and oils - Determination of the degradation products of chlorophylls a and a' (pheophytins a, a' and pyropheophytins) (ISO 29841:2009 + AMD 1:2016); German version EN ISO 29841:2014 + A1:2016
Pflanzliche Fette und Öle - Bestimmung thermischer Abbauprodukte des Chlorophyll a und a' (Pheophytin a, a' und Pyropheophytin) (ISO 29841:2009 + AMD 1:2016); Deutsche Fassung EN ISO 29841:2014 + A1:2016
Overview
DIN EN ISO 29841 specifies a procedure for the determination of the degradation products pheophytin a, a' and pyropheophytin a of chlorophylls. The method is applicable to vegetable fats and oils only. This document incorporates, without change, International Standard ISO 29841:2009, including Amendment 1:2016, prepared by ISO/TC 34 "Food products" (secretariat: AFNOR, France), Subcommittee SC 11 "Animal and vegetable fats and oils" (secretariat: BSI, United Kingdom). Based on the decision of CEN/TC 307 "Oilseeds, animal and vegetable fats and oils and their by-products - Methods of sampling and analysis" (secretariat: AFNOR, France), ISO 29841:2009 has been adopted as a European Standard in the parallel voting procedure. Amendment 1:2016 was voted in parallel within the scope of the Vienna Agreement. This Amendment contains a more detailed explanation for the home-made silica mini-columns in the note to 6.6. Furthermore, it is necessary to replace the size of the flasks in 6.2 as 10 ml is not big enough and sample could be lost when locating in the rotary evaporator. It was also agreed to change the title of 9.2 to emphasize the fact that it is the relative content of the analytes which is calculated. The responsible German standardization committee is Working Committee NA 057-05-05 AA "Gemeinschaftsausschuss für die Analytik von Fetten, Ölen, Fettprodukten, verwandten Stoffen und Rohstoffen" (GA Fett) of the German Society for Fat Science (DGF) ("Joint committee for the analysis of fats, oils and products thereof, related and primary products") of DIN Standards Committee Food and Agricultural Products (NAL).
