正在进行安全检测...
24安徽农学通报,AnhuiAgri,Sci,Bull,2019,25(01)HPLC测定黑果枸杞鲜果中花青素含量的方法研究束彤于瑶马明芳陈睿*(青海省食品检验检测院,青海西宁810000)摘要:目的:优化并建立黑果枸杞鲜果中HPLC的测定方法。方法:采用乙醇、盐酸、水为提取液,超声提取、水浴水解后用HPLC测定黑果枸杞鲜果中的花青素含量。对乙醇浓度、盐酸浓度、超声时间、水浴温度进行正交实验条件优化,对实验的检出限、线性关系、重复性及回收率进行了考察。结果:确定各因素影响主次顺序为水解温度>盐酸浓度>超声时间>乙醇浓度,最优提取条件为盐酸30%、乙醇50%、超声时间15min、沸水浴。本方法6种花青素的检出限都可达到12mg/kg,在1~50μg/mL范围内,除天竺葵色素R2=0.9989外,其余可以用于黑果枸杞鲜果中花青素含量的测定。关键词:黑果枸杞鲜果;花青素;高效液相色谱;正交实验中图分类号TS264.4文献标识码A文章编号1007-7731(2019)01-0024-07花青素R2均大于0.999,6次独立平行测定RSD均小于4%,6种花青素回收率在89.0%~91.7%。结论:该方法DeterminationofAnthocyanininFreshFruitofLyciumruthenicumMurr.byHPLCShuTongetal.(QinghaiProvinceInstituteforFoodControl,Xining810000,China)Abstract:Objective:Ahighperformanceliquidchromatographic(HPLC)methodwasestablishedforthedetermina⁃tionofanthocyanininfreshfruitofLyciumruthenicumMurr.,andtheorthogonalmethodwasusetoresearchtheopti⁃mumextractionconditions.Methods:Anthocyaninwereextractedbyultrasonic(solventextractionwereethanol,hy⁃drochloricacidandwater),extractwashydrolyzedintomajoranthocyaninsinhotwaterbath,andthenHPLCwasultrasonictimeandwaterbathtemperature)wereoptimizedbyorthogonalexperiment.Thelimitsofdetectionusedtotestthecontentofanthocyanins.Fourfactors(concentrationofethanol,concentrationofhydrochloricacid,(LOD),linearity,repeatabilityandrecoveryofthemethodwerestudied.Result:Theorderofprimaryandsecondaryofextractfactorweretemperatureofwaterbath,concentrationofhydrochloricacid,ultrasonic