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时间:2018-09-18
《超高效液相色谱法同时测定碳酸饮料中的22种食品添加剂》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、第3O卷第8期分析测试学报Vo1.30No.82011年8月FENXICESHIXUEBAO(JournalofInstrumentalAnalysis)877~882超高效液相色谱法同时测定碳酸饮料中的22种食品添加剂黄永辉,佘清,林钦,黄红霞,谢勇,梁敏(福建省产品质量检验研究院,福建福州350002)摘要:建立了超高效液相色谱(UPLC)同时测定碳酸饮料中22种食品添加剂的方法。采用WatersBEHC,。(1.7Ixm,2.1millx50Inn1)色谱柱,以0,01moL/L乙酸铵(pH5.8~6.0)和乙腈为流动相进行梯度洗脱,在35qC柱温,0.2mL/min流速下,
2、采用二极管阵列检测器在217、232、257131n波长处进行检测,外标法定量,15rain内可实现22种食品添加剂的分离。该方法具有良好线性,相关系数均大于0.995,检出限为0.02~0.50mg/L,平均回收率为81%一107%,RSD值为1.0%~12.9%。该方法操作简单、灵敏度高、重复性好,可满足国内对碳酸饮料中添加剂的检测需求。关键词:超高效液相色谱;碳酸饮料;食品添加剂;测定中图分类号:0657.72;TE624.8文献标识码:A文章编号:1004—4957(2011)08—0877—06doi:10.3969/j.issn.1004—4957.2011.08.00
3、9SimultaneousDeterminationof22FoodAdditivesinCarbonatedBeveragesbyUltraHighPerformanceLiquidChromatographyHUANGYong—hui,YuQing,LINQin,HUANGHong—xia,XIEYong,LIANGMin(FujianInspectionandResearchInstituteforProductQuality,Fuzhou350002,China)Abstract:Asimpleandrapidmethodwasdevelopedforthesimultan
4、eousdeterminationof22foodadditivesincarbonatedbeveragesbyultrahighperformanceliquidchromatography(UPLC).Thesamplewasdegassedbyultrasonicandadded10%ethano1.ThepHwasregulatedto8.0using25%anlmonira~water(1:1).TheseparationwasachievedonaBEHC】8column(1.7m,2.1mmx50nlm)in15minbyusing0.0lmol/LNH4Ac(pH
5、5.8~6.0)andacetonitrileasmobilephasewithaflowrateof0.2mL/minat35.Adiodearraydetectorwasusedtodetectat217.232and257nm.Thequantificationwasperformedbytheexternalstandardmethod.Themethodshowedgoodlinearitiesfor22foodadditiveswithcorrelationcoeficients(r)morethan0.995.Thedetectionlimitsrangedfrom0
6、.02mg/Lto0.50mg/L.Theaveragerecoveriesfor22foodadditivesfromspikedear—bonatedbeveragesampleswereintherangeof81%一107%withrelativestandarddeviations(RSDs)of1.0%~12.9%.Withtheadvantagesofsimplicity。sensitivityandrepeatability.themethodcouldmeettherequirementsfordeterminationoffoodadditivesincarbo
7、natedbeveragesathome.Keywords:ultraperformanceliquidchromatography(UPLC);carbonatedbeverage;foodadditive;determinatiOil现代食品加工业中,为使商品保质期更长、色泽更自然、味道更香甜可口,常向其中加入多种食品添加剂,如碳酸饮料中可能使用防腐剂、甜味剂、着色剂、酸度调节剂、咖啡因等。但很多食品添加剂对人体具有一定危害,如阿斯巴甜在人体胃肠道酶作用下可分解产
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