CITRIC and FATTY ACID ESTERS of GLYCEROL-柠檬酸和脂肪酸甘油酯.pdf

《CITRIC and FATTY ACID ESTERS of GLYCEROL-柠檬酸和脂肪酸甘油酯.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、CITRICandFATTYACIDESTERSofGLYCEROLPreparedatthe35thJECFA(1989),publishedinFNP49(1990)andinFNP52(1992).Metalsandarsenicspecificationsrevisedatthe61stJECFA(2003).AnADI'notlimited'wasestablishedatthe17thJECFA(1973)SYNONYMSCitricacidestersofmono-anddi-glycerides,citroglycerides,CITREM;INSNo.

2、472cDEFINITIONObtainedbyesterificationofglycerolwithcitricacidandediblefattyacidsorbyreactionofamixtureofmono-anddiglyceridesofediblefattyacidwithcitricacid;consistsofmixedestersofcitricacidandediblefattyacidswithglycerol;maycontainminorpartsoffreefattyacids,freeglycerol,freecitricacidan

3、dmono-anddiglycerides;maybewhollyorpartiallyneutralizedwithsodiumhydroxideorpotassiumhydroxide(asdeclaredonthelabel).StructuralformulaWhereatleastoneofR1,R2orR3representsacitricacidmoiety,onerepresentsafattyacidmoietyandtheremaindermayrepresentcitricacid,fattyacidorhydrogen.DESCRIPTIONWh

4、itetoivorycoloured,oilytowaxymaterial.FUNCTIONALUSESStabilizer,emulsifier,doughconditioner,antioxidantsynergistCHARACTERISTICSIDENTIFICATIONSolubility(Vol.4)Insolubleincoldwater;dispersibleinhotwater;solubleinoilsandfats;insolubleincoldethanolTestsforfattyacidsPassestests(Vol.4)Testforci

5、tricacid(Vol.4)PassestestsTestforglycerol(Vol.4)PassestestsPURITYSulfatedash(Vol.4)Notneutralizedproducts:notmorethan0.5%Partiallyorwhollyneutralizedproducts:notmorethan10%Test2gofthesample(MethodI)Freeglycerol(Vol.4)Notmorethan4%Totalglycerol8-33%SeedescriptionunderTESTSTotalcitricacid1

6、3-50%SeedescriptionunderTESTSTotalfattyacid37-81%SeedescriptionunderTESTSLead(Vol.4)Notmorethan2mg/kgDetermineusinganatomicabsorptiontechniqueappropriatetothespecifiedlevel.TheselectionofsamplesizeandmethodofsamplepreparationmaybebasedontheprinciplesofthemethoddescribedinVolume4,“Instrum

7、entalMethods.”TESTSPURITYTESTSTotalglycerolWeighaccuratelyabout2gofthesampleintoasaponificationflask,add50mlof0.5Methanolicpotassiumhydroxide,andrefluxfor30min.Toa1-litervolumetricflaskaddexactly99ml(fromaburet)ofchloroformand25mlofglacialaceticacid.Quantitativelytransfer