以近江牡蛎肉为原料,采用电子鼻、电子舌分析了水煮20、40、80和120 min 4个煮制时间的牡蛎煮制液的气味及滋味特征的差异,并利用感官评价和结合化学指标对蚝汁的风味品质进行综合性评价。电子鼻、电子舌的结果显示4种加热时间煮制液风...以近江牡蛎肉为原料,采用电子鼻、电子舌分析了水煮20、40、80和120 min 4个煮制时间的牡蛎煮制液的气味及滋味特征的差异,并利用感官评价和结合化学指标对蚝汁的风味品质进行综合性评价。电子鼻、电子舌的结果显示4种加热时间煮制液风味明显不同;80 min样品在气味和滋味特征方面都表现出与其他3种样品明显的差异;感官品评结果表明煮制80 min的牡蛎煮制液风味最佳;呈味物质与感官评价的相关性分析表明煮制液的鲜味与鲜味氨基酸总量呈显著正相关。展开更多
Electronic nose has been applied in analysis of food products by monitoring their flavours.But it gives an overall response to a mixture of volatile components.In this work,multianalysis and chemometrics technique wer...Electronic nose has been applied in analysis of food products by monitoring their flavours.But it gives an overall response to a mixture of volatile components.In this work,multianalysis and chemometrics technique were employed to analyse the E-nose and GC-MS data of Longjing tea produced in different locations in Zhejiang province,China.A good discrimination of Longjing tea samples was obtained by E-nose according to the producing area,and a total of 38 compounds were commonly identified from the GC-MS data.Each individual volatile component was related to E-nose response using PLSR and the significance of each component was evaluated by the coefficient R2.Results indicated that isoamyl isovalerate,cis-3-hexenyl hexanoate,cadinene,phenylethylalcohol and linalool played an important role in response on E-nose sensors.It was possible to give a complementary information concerning the individual chemicals interacts with the sensors of E-nose instead of the total volatile components.展开更多
文摘以近江牡蛎肉为原料,采用电子鼻、电子舌分析了水煮20、40、80和120 min 4个煮制时间的牡蛎煮制液的气味及滋味特征的差异,并利用感官评价和结合化学指标对蚝汁的风味品质进行综合性评价。电子鼻、电子舌的结果显示4种加热时间煮制液风味明显不同;80 min样品在气味和滋味特征方面都表现出与其他3种样品明显的差异;感官品评结果表明煮制80 min的牡蛎煮制液风味最佳;呈味物质与感官评价的相关性分析表明煮制液的鲜味与鲜味氨基酸总量呈显著正相关。
基金financial support from the China Agriculture (tea) Research System (CARS)Chinese Universities Scientific FundScientific Research Project of Zhejiang Education Department (Y201018805)
文摘Electronic nose has been applied in analysis of food products by monitoring their flavours.But it gives an overall response to a mixture of volatile components.In this work,multianalysis and chemometrics technique were employed to analyse the E-nose and GC-MS data of Longjing tea produced in different locations in Zhejiang province,China.A good discrimination of Longjing tea samples was obtained by E-nose according to the producing area,and a total of 38 compounds were commonly identified from the GC-MS data.Each individual volatile component was related to E-nose response using PLSR and the significance of each component was evaluated by the coefficient R2.Results indicated that isoamyl isovalerate,cis-3-hexenyl hexanoate,cadinene,phenylethylalcohol and linalool played an important role in response on E-nose sensors.It was possible to give a complementary information concerning the individual chemicals interacts with the sensors of E-nose instead of the total volatile components.
