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O p timizationoftheNationalStandardMethodfortheDetermination
ofAntioxidantsinEdibleOilsb yHi g hPerformance
Li q uidChromato g ra p h y
2
ZHONGCi p in g CHENGChan gy u , SUXin , ZHOUHai y an ,
1
,
1
1
1
MA Wei , YUXiao q in 1∗
( 1. SichuanInstituteo fFoodIns p ection , Chen g du611731 , China ;
2.Colle g eo fFoodScience , SichuanA g riculturalUniversit y , Ya′an625014 , China )
Abstract : A methodofhi g hp erformanceli q uidchromato g ra p h y forthedeterminationofantioxidantsinfood
inthenationalstandardGB5009.32-2016waso p timized.Theo p timizedtestconditionswereasfollows : Sam p les
weredissolvedinnGhexanesaturatedwithacetonitrile , andtheantioxidantswereextracted3timesb y10 mLof
acetonitrilesaturated withnGhexane ( containin g Ascorb y lPalmitate ); theC 18 solidp haseextractioncolumn was
usedfor p urification.TheA g ilentEcli p seXDBGC 18 column ( 250 mm×4.6 mm , 5 μ m ) wasusedasstationar y
p hase , and0.1% ( volumefraction ) formicacidGacetonitrilemixturesindifferentvolumeratioswereusedasmobile
p hasefor g radientelution.Theo p timizedresultsshowedthatthe9antioxidantswerecom p letel yse p aratedwithin
30min , thep eaksha p esweres y mmetrical , andtheresolutionwasbetter , whichsolvedthe p roblemsincludin g the
p oor p eaksha p eofPGandthefailureofthebaselinese p arationofTHBPand TBHQinthenationalstandard
method.Thes p ikedrecover y increasedfrom31.4%-90.1% ofthenationalstandardmethodto62.0%-104% , and
RSDs ( n=6 ) ofthedeterminedvalueswerealllessthan13%.
Ke y words : hi g hp erformanceli q uidchromato g ra p h y ; antioxidant ; edibleoil ; nationalstandard method ;
o p timization
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