正相液相色谱法测定婴幼儿配方乳粉中1,3-二油酸-2-棕榈酸甘油三酯宋戈;亢美娟;杨金宝【摘要】Methodsforthedeterminationof1,3-dioleoyl-2-palmitoyltriglyceride(OPO)ininfantformulamilkpowderbynormal-phaseliquidchromatography(NP-LC)andreversed-phaseliquidchromatography(RP-LC)wereestablishedandcompared
Theanalytesintheinfantformulawereextractedbyethyletherandpetroleumether,enrichedbyarotaryevapora-tor,andseparatedonsilver-ioncolumnandC18columnanddetectedwithanevaporativelightscatteringdetector(ELSD)
OPOand1,2-dioleoyl-3-palmitoyltriglyceride(OOP)canbebasi-callyseparatedonasilver-ioncolumnwithamixedsolutionofdichloromethane-acetoneasmobilephasebygradientelution
Therecoverieswere93
0%-101
5%,therelativestandarddeviations(RSD)were2
56%,andthelimitofdetectionwas20mg/kg
ThismethodisaccurateandstableforthedeterminationofOPOintheinfantform