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食品研究与开发:2020,41(20):186-192
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不同焙火程度的武夷岩茶挥发性成分分析研究
(1.工业微生物教育部重点实验室,天津市工业微生物重点实验室,天津科技大学生物工程学院,天津300457;2.武夷山市首席岩茶厂,福建武夷山354303)
Analysis of Volatile Components of Wuyi Rock Tea with Different Baking Degrees
(1.Key Laboratory of Industrial Fermentation Microbiology,Ministry of Education,Tianjin Industrial Microbiology Key Lab,College of Biotechnology of Tianjin University of Science and Technology,Tianjin 300457,China;2.Wuyishan Chief Rock Tea Factory,Wuyishan 354303,Fujian,China)
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投稿时间:2020-01-31    
中文摘要: 利用电子鼻(electronic nose,E-nose)和顶空固相微萃取(headspace solid phase microextraction,HS-SPME)结合气相色谱-质谱联用(gas chromatography-mass spectrometry,GC-MS)对不同焙火程度的武夷岩茶挥发性成分进行分析。结果表明:电子鼻可以很好地区分不同焙火程度的武夷岩茶样品。分析结果表明:4种岩茶样品共鉴定出86种挥发性成分,其中,轻焙火样品鉴定出53种,中轻焙火的样品鉴定出44种,中焙火样品鉴定出57种,足焙火样品鉴定出70种。GC-MS结合主成分分析(principal component analysis,PCA)和偏最小二乘法(partial least squaresdiscriminant analysis,PLS-DA)表明:苯甲酸正己酯、香叶基丙酮、乙酸甲酯、2-甲基丁醛、1-戊烯-3-醇、香叶酸甲酯、1H-吡咯-2-甲醛、芳樟醇氧化物Ⅰ、3-(苯甲氧基)-1-丙醇、芳樟醇氧化物Ⅱ、对薄荷-4-烯-3-酮、2-甲氧基-5-甲基-苯胺、1-辛醇、植醇、3-甲基-1H-吲哚、8-雪松烯-13-醇等物质是区分不同焙火程度武夷岩茶的主要香气物质。
Abstract:The volatile components of 4 Wuyi rock tea with different degrees of baking were analyzed by electronic nose(E-nose)and headspace solid phase microextraction (HS-SPME)combined with gas chromatography-mass spectrometry (GC-MS).The results showed that E-nose can distinguish Wuyi rock tea samples with different baking degrees.The results of analysis showed that 86 volatile components were identified from 4 rock tea samples,including 53 in light baking,44 in medium light baking,57 in medium baking and 70 in full baking.GC-MS combined with principal component analysis(PCA)and partial least squaresdiscriminant analysis (PLS-DA)showed:n-hexyl benzoate,geranyl acetone,methyl acetate,2-methyl butyraldehyde,1-pentene-3-ol,methyl geranyl,1H-pyrrole-2-formaldehyde,linalool oxide I,3-(benzyloxy)-1-propanol,linalool oxide II,menthol-4-ene-3-one,2-methoxy-5-methyl-aniline,1-octanol,phytol,3-methyl-1H-indole,8-cedrol-13-ol and the like are the main aroma substances that distinguish Wuyi rock tea with different baking degree.
文章编号:202020031     中图分类号:    文献标志码:
基金项目:国家自然科学基金面上项目(31671847)
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