摘要
为探究0min(A),30 min(B)、60 min(C)和90 min(D)煮制时间的德庄火锅底料挥发性物质的变化,试验以德庄火锅底料在煮制过程中挥发性物质为研究对象,采用电子鼻、捕集阱顶空-气质联用仪(Trap head space-gas chromatography-mass spectrometry,HS-Trap-GC-MS)结合雷达图、主成分分析、气味活度值(odor activity value,OAV)和正交偏最小二乘法判别分析(orthogonal partial least squares discriminant analysis,OPLS-DA)探究不同煮制时间的德庄火锅底料气味变化规律.电子鼻检测结果表明,不同煮制时间的火锅底料的整体气味轮廓差异明显;GC-MS分析显示4个样品共检测到87种挥发性物质,烯烃、醇类和醚类物质是不同煮制时间的火锅底料的主要挥发性物质;OAV分析显示芳樟醇和茴香脑是不同煮制时间的共有关键挥发性物质.2-茨醇、二氢香芹醇、丙酮、二烯丙基二硫、丙酸异戊酯、α-松油醇、(1S)-(+)-3-蒈烯、(E)-β-罗勒烯、P-伞花烃、丙酸乙酯、正戊烯、对二甲苯是导致样品差异的特征物质.煮制时间对德庄火锅底料的挥发性物质组成和气味特性有显著影响.研究结果可为火锅底料的研发、品控及指导消费提供参考.
Abstract
To explore the changes in volatile compounds of Dezhuang hotpot base at different cooking times at 0 min(A),30 min(B),60 min(C)and 90 min(D),electronic nose,trap head space-gas chromatography-mass spectrometry(HS-Trap-GC-MS)combined with radar charts,principal component analysis,odor activity value(OAV),and orthogonal partial least squares discriminant analysis(OPLS-DA)were utilized to explore the odor variation patterns of Dezhuang hotpot base cooked for varying durations.Results of the electronic nose indicated significant differences in the overall odor profiles of the hotpot base at different cooking times.The GC-MS analysis revealed that a total of 87 volatile compounds were detected across four samples,with olefins,alcohols,and ethers being the main volatile substances in the hotpot base cooked for various durations.The OAV analysis showed that linalool and anethole were key volatile compounds common to different cooking times.Compounds such as 2-caryophyllene,dihydrocarveol,acetone,divinyl disulfide,isoamyl propionate,α-terpineol,(1S)-(+)-3-carene,(E)-β-ocimene,P-cymene,ethyl propionate,n-pentene,and p-xylene were identified as characteristic substances contributing to the differences among the samples.The composition and aroma characteristics of Dezhuang hotpot base were significantly influenced by the cooking time.The results of the study can provide references for the research and development,quality control,and consumer guidance of hotpot base materials.
维普
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