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基于ATD-GC-MS的建阳马当山1号白茶香气成分分析

ATD-GC-MS Analysis on Aromatics in Jianyang Madangshan 1 White Tea

  • 摘要: 为探究建阳马当山1号白茶香气品质形成的物质基础,本研究以建阳贡眉为对照,采用自动热脱附-气相色谱-质谱联用仪(automatic thermal desorption-gas chromatography-mass spectrometry,ATD-GC-MS)对建阳马当山1号白茶香气成分进行测定。结果表明:建阳马当山1号白茶中鉴定出49种香气成分,其香气总量显著高于建阳贡眉;1-戊烯-3-醇、正己醛、正己醇、戊醛、异佛尔酮、苯甲醇、2-乙基己醇、芳樟醇和苯甲醛为建阳马当山1号白茶的主要香气成分,是建阳马当山1号白茶香气形成的物质基础。此外,建阳马当山1号白茶含有6种特有香型成分,包括1种陈香型(异戊醇)、4种花香型(3,4-二甲基苯甲醇、苯乙醇、橙花醇和香叶醇)、4种木香型(1-十六烷醇、莰烯、β-蒎烯和γ-松油烯)、6种清嫩香型(E,E)-2,4-庚二烯醛、乙酸己酯、丁酸癸酯、顺式-3-己烯醇 2-甲基丁酸酯、2-十八烯酸单甘油酯和6-甲基-5-庚烯-2-酮、1种果香型(柠檬醛)和2种甜香型(γ-己内酯和戊二酸二甲酯)物质。这些香气成分构成了建阳马当山1号白茶的独特香气品质,使其形成品种香。

     

    Abstract: The aromatic quality ofJianyang Madangshan 1 (Camellia sinensis)white tea was determined using the automatic thermal desorption-gaschromatography-mass spectrometry (ATD-GC-MS) in comparison to Jianyang Gongmei.There were 49 aromatic compounds identified in Jianyang Madangshan 1 with atotal amount significantly higher than that of JG. The Jianyang Madangshan 1aroma was contributed mainly by volatiles including 1-penten-3-ol, hexanal,1-hexanol, valeraldehyde, isophorone, benzyl alcohol, 2-ethylhexanol, linalool,and benzaldehyde. Some other aromatics wereuniquely but richly found only in JM1 which included one of the aged types, 4 of the floral types,4 of the woody types, 6 of the refreshing types, one of the fruity types, and 2of the sweet types. These special aromacomponents improved the aroma quality of the Jianyang Madangshan 1 white tea,and made it form a unique flavor.

     

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