目的探究内蒙古通辽地区牛肉中挥发性风味物质及特征风味物质,以牛肉的前腿、后腿和背脊为研究对象,对其挥发性风味物质进行测定分析。方法利用固相微萃取结合气相色谱-质谱法(solid phase microextraction coupled with gas chromatogr...目的探究内蒙古通辽地区牛肉中挥发性风味物质及特征风味物质,以牛肉的前腿、后腿和背脊为研究对象,对其挥发性风味物质进行测定分析。方法利用固相微萃取结合气相色谱-质谱法(solid phase microextraction coupled with gas chromatography-mass spectrometry,SPME-GC-MS)及AOC-6000自动进样器对牛肉3个部位共12个样本进行分析。结果共鉴定出117种挥发性成分,包括酮类、醇类、醛类、酸类、酯类、烷烃类和其他类化合物。利用偏最小二乘判别分析及聚类热图分析,较好的识别3种部位之间的关系,结合相对气味活度值(relative odor activity value,ROAV)初步得出影响通辽牛肉的9种风味化合物,分别为十六醛、己醛、庚醛、辛醛、壬醛、(E)-2-壬烯醛、癸醛、(E)-2-癸烯醛和1-辛烯-3-醇。结论本研究探讨了通辽牛肉3个部位中挥发性风味物质的相互关系,初步确定牛肉的关键性风味化合物,以期为提升牛肉风味及其品质评价提供科学依据。展开更多
In the present study,flavor profiles of Chinese spiced beef in the cooking process were comparatively analyzed by electronic nose,gas chromatography–mass spectrometry(GC–MS)with a thermal desorption system(TDS),and ...In the present study,flavor profiles of Chinese spiced beef in the cooking process were comparatively analyzed by electronic nose,gas chromatography–mass spectrometry(GC–MS)with a thermal desorption system(TDS),and solid-phase microextraction(SPME).A total of 82 volatile compounds were identified,and 3-methyl-butanal,pentanal,hexanal,-xylene,heptanal,limonene,terpinene,octanal,linalool,4-terpinenol,-terpineol,and(E)-anethole were identified as the characteristic flavor compounds in Chinese spiced beef.Variation in the content of volatile components produced by different cooking processes was observed.In general,a cooking time of 4 h resulted in optimal flavor quality and stability.Results indicated that the electronic nose could profile and rapidly distinguish variation among different cooking time.The volatile profiling by TDS-GC–MS and responses from the electronic nose,in combination with multivariate statistical analysis,are a promising tool for control the cooking process of spiced beef.展开更多
基金This work was part of the project“Research and Development of Nutrition and Health Processing for Halal Beef and Muttons”,and was financially supported by Ningxia Hui Autonomous Region Technology R&D Support Program as well as the“13th Five-Year Plan”(No.2016YFD0400703)of National Key Research and Development Program of China.
文摘In the present study,flavor profiles of Chinese spiced beef in the cooking process were comparatively analyzed by electronic nose,gas chromatography–mass spectrometry(GC–MS)with a thermal desorption system(TDS),and solid-phase microextraction(SPME).A total of 82 volatile compounds were identified,and 3-methyl-butanal,pentanal,hexanal,-xylene,heptanal,limonene,terpinene,octanal,linalool,4-terpinenol,-terpineol,and(E)-anethole were identified as the characteristic flavor compounds in Chinese spiced beef.Variation in the content of volatile components produced by different cooking processes was observed.In general,a cooking time of 4 h resulted in optimal flavor quality and stability.Results indicated that the electronic nose could profile and rapidly distinguish variation among different cooking time.The volatile profiling by TDS-GC–MS and responses from the electronic nose,in combination with multivariate statistical analysis,are a promising tool for control the cooking process of spiced beef.
