ISO 13884-2003 动物和植物脂肪和油.用红外光谱测定法测定孤立的反式异构体

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【英文标准名称】:Animalandvegetablefatsandoils-Determinationofisolatedtransisomersbyinfraredspectrometry
【原文标准名称】:动物和植物脂肪和油.用红外光谱测定法测定孤立的反式异构体
【标准号】:ISO13884-2003
【标准状态】:现行
【国别】:国际
【发布日期】:2003-07
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC34
【标准类型】:()
【标准水平】:()
【中文主题词】:定义;食品;调查;试验;植物脂肪;动物脂肪;异构体;方法;农产品;植物油;红外线光谱法;试样制备;化学分析和试验;脂肪;光谱测定法;油;动物油;抽样方法
【英文主题词】:Agriculturalproducts;Animalfats;Animaloils;Calibration;Chemicalanalysisandtesting;Definitions;Determination;Fats;Foodproducts;Infraredspectroscopy;Investigations;Isomer;Methods;Oils;Samplingmethods;Specimenpreparation;Spectrometry;Testing;Vegetablefats;Vegetableoils
【摘要】:ThisInternationalStandardspecifiesamethodfortheaccuratedeterminationofisolatedtransbondsinnaturalorprocessedlong-chainfattyacids,fattyacidestersandtriglycerideswithtransisomerlevels>5%.Themethodisnotapplicable,orisapplicableonlywithspecificprecautions,to—fatsandoilscontaininghighlevels(over5%)ofconjugatedunsaturation(e.g.tungoil),—materialscontainingfunctionalgroupswhichmodifytheintensityoftheC-Hdeformationaboutthetransdoublebond[e.g.castoroilcontainingricinoleicacidoritsgeometricalisomer,ricinelaidicacid(12-hydroxy-9-octadecenoicacid)],—mixedtriglycerideshavinglong-andshort-chainmoieties(suchasdiacetostearin),oringeneral,—anymaterialscontainingconstituentswhichhavefunctionalgroupswhichgiverisetospecificabsorptionbandsatorsufficientlyclosetointerferewiththe966cmbandoftheC-Hdeformationoftheisolatedtransdoublebond.NOTEDienes,suchascis-transandtrans-transdienes,canaffectthecalibration.Foraccuratedeterminationsonmaterialswithtranslevelsbelow5%,astandardizedcapillaryGLCmethodisrecommended(forexample,seeISO15304).
【中国标准分类号】:X14
【国际标准分类号】:67_200_10
【页数】:9P;A4
【正文语种】:英语