※安全检测食品科学2023,Vol.44,No.04329超高效液相色谱-串联质谱法检测食品中腰果过敏原宁亚维1,杨正1,马俊美2,刘茁1,陈佳3,*,李强2,*(1.河北科技大学食品与生物学院,河北石家庄050018;2.河北省食品检验研究院,河北石家庄050000;3.石家庄学院化工学院,河北石家庄050035)摘要:基于超高效液相色谱-串联质谱系统建立食品中腰果过敏原的定量检测方法。腰果经提取、胰蛋白酶酶解、净化后,经Easy-nLC1000纳升液相色谱分离,随后进入四极杆-静电场轨道离子阱高分辨质谱以全扫描模式进行数据采集,使用ProteinPilot软件结合Uniprot蛋白数据库对样品扫描结果进行分析,并基于基本局部比对搜索工具(BLAST)验证肽段特异性,最终筛选出6条腰果特异性肽段,利用超高效液相色谱-三重四极杆质谱系统的多反应监测模式对实际样品进行检测。结果表明,该方法在0.005~10mg/mL范围内线性关系良好,R2均大于0.99,固体基质中定量限为2.5~5mg/kg,饮料基质中定量限为0.005~0.01mg/mL,平均回收率在82.5%~109.9%之间,相对标准偏差不大于8.9%。该方法灵敏度高、特异性好,可用于饼干、面包、蛋糕、桃酥、巧克力和饮料6种食品基质中的腰果过敏原检测。关键词:超高效液相色谱-串联质谱;腰果过敏原;检测DetectionofCashewAllergensinFoodsbyUltra-highPerformanceLiquidChromatography-TandemMassSpectrometryNINGYawei1,YANGZheng1,MAJunmei2,LIUZhuo1,CHENJia3,*,LIQiang2,*(1.CollegeofFoodandBiology,HebeiUniversityofScienceandTechnology,Shijiazhuang050018,China;2.HebeiFoodInspectionandResearchInstitute,Shijiazhuang050000,China;3.InstituteofChemicalTechnology,ShijiazhuangUniversity,Shijiazhuang050035,China)Abstract:Aquantitativemethodforthedetectionofcashewallergensinfoodswasestablishedbasedonultra-highperformanceliquidchromatography-tandemmassspectrometry(UPLC-MS/MS).Cashewsampleswereextracted,trypsinized,purified,andseparatedusinganEasynLC1000nano-liquidchromatograph,andthendatawerecollectedinthefull-scanacquisitionmodebyquadrupole/orbitraphigh-resolutionmassspectrometry.ThescanningresultswereanalyzedbyProteinPilotsoftwaresearchagainsttheUniProtproteindatabase,andthepeptidespecificitywasverifiedusingthebasiclocalalignmentsearchtool(BLAST).Finally,sixcashewspecificpeptid...