资源描述：
《CHLOROPHYLLINS, COPPER COMPLEXES SODIUM and POTASSIUM SALTS-叶绿酸铜、叶绿酸钾、叶绿酸钠.pdf》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。
1、CHLOROPHYLLINS,COPPERCOMPLEXESSODIUMandPOTASSIUMSALTSPreparedatthe31stJECFA(1987),publishedinFNP38(1988)andinFNP52(1992).Metalsandarsenicspecificationsrevisedatthe59thJECFA(2002).AnADIof0-15mg/kgbwwasestablishedatthe22ndJECFA(1978)SYNONYMSSodiumcopperchlorophyllin,potassiumcopperchloro
2、phyllin,C.I.(1975)No.75810,INSNo.141(ii)DEFINITIONThealkalisaltsofCopperChlorophyllinsareobtainedbytheadditioncoppertotheproductobtainedbythesaponificationofasolventextractionofgrass,lucerne,nettleandotherplantmaterial;thesaponificationremovesthemethylandcyclophytolestergroupsandmaypar
3、tiallycleavethepentenylring;afteradditionofcoppertothepurifiedchlorophyllins,theacidgroupsareneutralisedtoformthesaltsofpotassiumand/orsodium;thecommercialproductsmaybepresentedasaqueoussolutionsordriedpowders.Onlythefollowingsolventsmaybeusedfortheextraction:acetone,dichloromethane,me
4、thanol,ethanol,propan-2-olandhexane.ChemicalnamesThemajorcolouringprinciplesintheiracidformsare3-(10-Carboxylato-4-ethyl-1,3,5,8-tetramethyl-9-oxo-2-vinylphorbin-7-yl)propionate,coppercomplex(Copperchlorophyllina)3-(10-carboxylato-4-ethyl-3-formyl-1,5,8-trimethyl-9-oxo-2-vinylphorbin-7
5、-yl)propionate,coppercomplex(Copperchlorophyllinb)Dependingonthedegreeofhydrolysisthecyclopentenylringmaybecleavedwiththeresultantproductionofathirdcarboxylfunction.ChemicalformulaCopperchlorophyllina(acidform):C34H32CuN405Copperchlorophyllinb(acidform):C34H30CuN406Structuralformulawhe
6、reX=CH3forthe"a"compoundX=CHOforthe"b"compoundM=Potassiumand/orsodiumFormulaweightCopperchlorophyllina:640.20Copperchlorophyllinb:654.18Eachmaybeincreasedbya18Daltonsifthecyclopentenylringiscleaved.AssayNotlessthan95%totalcopperchlorophyllinsafterdrying(100º,1h).DESCRIPTIONDarkgreentob
7、lue/blackpowderordarkgreensolution.FUNCTIONALUSESColourCHARACTERISTICSIDENTIFICATIONSolubility(Vol.4)Solubleinwater;veryslightlysolubleinloweralcoholsandketonesanddiethylether;insolubleinchloroalkanes,hydrocarbonsandfixedoilsSpectrophotometryA(1%,1cm)ofthesample,driedat100ºfor1h,at40
