基于SPME-GC-MS和电子鼻技术对牛肉蛋白肽美拉德反应产物风味成分分析Analysis on Flavor Components of Beef Protein Peptide Maillard Reaction Products Based on SPME-GC-MS and Electronic Nose Technology
桂海佳,任丽蓉,王晓华,李泽林,谷大海,王雪峰,肖智超,王桂瑛,范江平
摘要(Abstract):
拟探究不同肽段的牛肉蛋白肽美拉德反应产物的风味特性。以牛肉边角料为原料,经酶解后采用液相串联质谱(liquid chromatography coupled with tandem mass spectrometry, LC-MS/MS)对其酶解液中肽分子量及分布进行分析;再以不同肽段的牛肉蛋白肽为基料进行美拉德反应,利用电子鼻技术(electronic nose, E-nose)、氨基酸自动分析仪、顶空固相微萃取法-气相色谱-质谱联用(headspace solid-phase microextraction-gas chromatography-mass spectrometry, HS-SPME-GC-MS),结合偏最小二乘法判别分析,分析不同肽段的牛肉蛋白肽美拉德反应产物(BPM)的挥发性风味物质。结果表明,在未分肽段的牛肉蛋白肽美拉德反应液(BPMS)中共鉴定出68种挥发性成分;牛肉蛋白肽美拉德反应液最佳肽段为1~3 kDa (BPM 1~3),BPM 1~3的肽段经过美拉德反应后亮氨酸、酪氨酸、苯丙氨酸和精氨酸含量明显增加,从BPM 1~3中共鉴定出50种挥发性成分,包括醇类、酮类、酯类、杂环类、烷类、醛类等;BPMS与BPM 1~3共有14种挥发性化合物差异较明显。
关键词(KeyWords): 牛肉蛋白肽;美拉德反应;HS-SPME-GC-MS;电子鼻;偏最小二乘法判别分析
基金项目(Foundation): 云南省专家工作站(202005AF150016);; 校企合作项目(KX142021018)
作者(Author): 桂海佳,任丽蓉,王晓华,李泽林,谷大海,王雪峰,肖智超,王桂瑛,范江平
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