Traditionally fermented shrimp paste has a long fermentation period and is susceptible of external factors,which leads to unstable quality and limits its development and application.Therefore,the purpose of this study...Traditionally fermented shrimp paste has a long fermentation period and is susceptible of external factors,which leads to unstable quality and limits its development and application.Therefore,the purpose of this study is to analyze the flavor changes in the shrimp paste fermentation process and screen out the key volatile aroma components in the shrimp paste to control the flavor quality of the shrimp paste products.The overall odor profile was detected by the electronic nose.A total of 106 volatile flavor compounds in the shrimp paste samples at different fermentation stages were identified by solid-phase microextraction-gas chromatography-mass spectrometry(SPME-GC-MS)and headspace-gas chromatography-ion mobility spectrometry(HS-GC-IMS).The main aroma components alcohols,aldehydes,pyrazines and other substances in the fermentation process showed an overall upward trend.A total of 17 key volatile aroma components in shrimp paste at different fermentation stages were identified by the relative aroma activity value(ROAV)method.The combination of electronic nose,SPME-GC-MS and HS-GC-IMS could comprehensively reflect the changes of volatile components in shrimp paste at different fermentation stages,which helps to further understand the mechanism of shrimp paste flavor formation and provides a basis for the regulation of the flavor quality of shrimp paste products.展开更多
运用固相微萃取-气相色谱-质谱(solid-phase microextraction coupled with gas chromatography-mass spectrometry,SPME-GC-MS)联用技术检测分析不同加工方式下皱椒辣椒粉的香气组成。综合相对气味活度值(relative odor activity value...运用固相微萃取-气相色谱-质谱(solid-phase microextraction coupled with gas chromatography-mass spectrometry,SPME-GC-MS)联用技术检测分析不同加工方式下皱椒辣椒粉的香气组成。综合相对气味活度值(relative odor activity value,ROAV)探讨皱椒辣椒粉关键性风味化合物。结果表明:3种加工方式下的皱椒辣椒粉共检出77种挥发性风味化合物,直接粉碎鉴定出42种,传统炒制鉴定出37种,电热焙烤鉴定出44种。ROAV值结果表明:壬醛、苯乙醛、己酸己酯、戊酸乙酯、愈创木酚这些物质为几种皱椒辣椒粉共有且ROAV>1,是皱椒辣椒粉的重要风味物质。对8类香气成分进行主成分分析,香气综合评分得出电热焙烤组得分最高,其次是传统炒制组和直接粉碎组,表明电热焙烤能有效提升皱椒辣椒粉的风味品质。展开更多
基金support from the National Key R&D Program of China (2019YFD0901903)the Innovation Team Project of Hebei (Province) Modern Agricultural Industry Technology System (HBCT2018170207)the Postgraduate Research & Practice Innovation Program of Jiangsu Province (SJCX20_1426)
文摘Traditionally fermented shrimp paste has a long fermentation period and is susceptible of external factors,which leads to unstable quality and limits its development and application.Therefore,the purpose of this study is to analyze the flavor changes in the shrimp paste fermentation process and screen out the key volatile aroma components in the shrimp paste to control the flavor quality of the shrimp paste products.The overall odor profile was detected by the electronic nose.A total of 106 volatile flavor compounds in the shrimp paste samples at different fermentation stages were identified by solid-phase microextraction-gas chromatography-mass spectrometry(SPME-GC-MS)and headspace-gas chromatography-ion mobility spectrometry(HS-GC-IMS).The main aroma components alcohols,aldehydes,pyrazines and other substances in the fermentation process showed an overall upward trend.A total of 17 key volatile aroma components in shrimp paste at different fermentation stages were identified by the relative aroma activity value(ROAV)method.The combination of electronic nose,SPME-GC-MS and HS-GC-IMS could comprehensively reflect the changes of volatile components in shrimp paste at different fermentation stages,which helps to further understand the mechanism of shrimp paste flavor formation and provides a basis for the regulation of the flavor quality of shrimp paste products.
文摘运用固相微萃取-气相色谱-质谱(solid-phase microextraction coupled with gas chromatography-mass spectrometry,SPME-GC-MS)联用技术检测分析不同加工方式下皱椒辣椒粉的香气组成。综合相对气味活度值(relative odor activity value,ROAV)探讨皱椒辣椒粉关键性风味化合物。结果表明:3种加工方式下的皱椒辣椒粉共检出77种挥发性风味化合物,直接粉碎鉴定出42种,传统炒制鉴定出37种,电热焙烤鉴定出44种。ROAV值结果表明:壬醛、苯乙醛、己酸己酯、戊酸乙酯、愈创木酚这些物质为几种皱椒辣椒粉共有且ROAV>1,是皱椒辣椒粉的重要风味物质。对8类香气成分进行主成分分析,香气综合评分得出电热焙烤组得分最高,其次是传统炒制组和直接粉碎组,表明电热焙烤能有效提升皱椒辣椒粉的风味品质。
