【英文标准名称】:Animalfeedingstuffs-Determinationofaminoacidscontent
【原文标准名称】:动物饲料.氨基酸含量的测定
【标准号】:ISO13903-2005
【标准状态】:现行
【国别】:国际
【发布日期】:2005-05
【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】:动物;实验室间试验;环形试验;试样制备;化学分析和试验;水解;氨基酸;夹盘;饲料;残留物;离子交换法;色谱法;农业;精密度;食品;含量测定
【英文主题词】:Agriculture;Aminoacids;Animalfeed;Animals;Chemicalanalysisandtesting;Chromatography;Chucks;Determinationofcontent;Foods;Hydrolysis;Inter-laboratorytests;Ion-exchangemethods;Precision;Residues;Ringtests;Specimenpreparation
【摘要】:ThisInternationalStandarddescribesthedeterminationoffree(syntheticandnatural)andtotal(peptide-boundandfree)aminoacidsinfeedingstuffs,usinganaminoacidanalyserorHPLCequipment.Itisapplicabletothefollowingaminoacids:—sumofcystineandcysteine;—methionine;—lysine;—threonine;—alanine;—arginine;—asparticacid;—glutamicacid;—glycine;—histidine;—isoleucine;—leucine;—phenylalanine;—proline;—serine;—tyrosine;—valine.Themethoddoesnotdistinguishbetweenthesaltsofaminoacids,nordoesitdifferentiatebetweenDandLformsofaminoacids.Itisnotvalidforthedeterminationoftryptophanorhydroxyanaloguesofaminoacids.Limitsofquantificationdependonthechromatographicequipment,butlevelsaslowas:0,3g/kgtotallysine;0,25g/kgtotalmethionine;0,35g/kgtotalcystinepluscysteine;0,2g/kgtotalthreonine;0,035g/kgfreelysine;0,035g/kgfreemethionine;and0,03g/kgfreethreoninecantypicallybeanalysed.NOTEAlowerlimitofquantificationordetectionmightbeachievablebutthisistobevalidatedbytheusers.
【中国标准分类号】:B46
【国际标准分类号】:65_120
【页数】:17P;A4
【正文语种】:英语