DAMMAR GUM-达马树脂、达玛脂.pdf

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1、DAMMARGUMPreparedatthe39thJECFA(1992),publishedinFNP52Add1(1992)supersedingspecificationspreparedatthe28thJECFA(1984),publishedinFNP31/2(1984).Metalsandarsenicspecificationsrevisedatthe63rdJECFA(2004).NoADIwasallocatedatthe29thJECFA(1985)SYNONYMSDammarresin,Damargum,Damarresi

2、n,DammarDEFINITIONThedriedexudationfromcultivatedtreesofAgathisspp.,Hopeaspp.,Shoreaspp;consistsofacomplexmixtureofacidicandneutralterpenoidcompoundstogetherwithpolysaccharidematerial.C.A.S.number9000-16-2DESCRIPTIONThecrudeproductoccursasirregularwhitetoyelloworbrownishtears

3、,fragmentsorpowder,sometimesadmixedwithfragmentsofbark;refinedgradesarewhitetoyellowishandarefreeoffragmentsofligneousmatter;practicallyodourless,althoughrefinedgradesmaycarryanodouroftheessentialoilsusedintherefiningprocessFUNCTIONALUSESCloudingagent,glazingagent,stabilizerC

4、HARACTERISTICSIDENTIFICATIONSolubility(Vol.4)Insolubleinwater;freelysolubleintolueneMeltingrange(Vol.4)oo90-95Acidvalue(Vol.4)Notmorethan40PURITYLossondrying(Vol.4)oNotmorethan6%(105,18h)Ash(total)(Vol.4)Notmorethan0.5%Iodinevalue(Vol.4)Notlessthan10andnotmorethan40Lead(Vol.4

5、)Notmorethan2mg/kgDetermineusinganatomicabsorptiontechniqueappropriatetothespecifiedlevel.TheselectionofsamplesizeandmethodofsamplepreparationmaybebasedontheprinciplesofthemethoddescribedinVolume4,“InstrumentalMethods.”MicrobiologicalcriteriaSalmonellaspp:negativein1g(Vol.4)E

6、.coli:negativein1g