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采用顶空-固相微萃取法(SPME)从瀑布毛峰茶叶中提取挥发性成分,用气相色谱-质谱法(GC-MS)分析其组成。从一级和特级茶叶中分别鉴定了相对含量大于0.50%的化合物48个和41个,其中共同组分27个。一级瀑布毛峰茶叶的主要挥发性成分有壬醛(9.22%),芳樟醇(4.75%),牛儿醇(4.07%),(Z)-3-己烯-1-醇(3.53%),十一醛(3.16%),邻苯二甲酸二异丁酯(2.94%),十六烷(2.35%),己醛(2.00%),1-辛醇(1.97%),6-甲基-5-庚烯-2-酮(1.86%)。特级瀑布毛峰茶叶的主要挥发性成分有:壬醛(8.85%),1-辛烯-3-醇(6.37%),十一醛(4.81%),2,5,5-三甲基-1-己烯(2.84%),辛醛(2.73%),1-辛醇(2.63%),6-甲基-5-庚烯-2-酮(2.60%),芳樟醇(2.20%),1-戊醇(2.20%),己醛(2.16%)。两个等级的瀑布毛峰茶的主要挥发性成分大致相同,但各成分的含量存在一定差异。
Volatile components were extracted from Maofeng tea leaves by headspace-solid phase microextraction (SPME) and their compositions were analyzed by gas chromatography-mass spectrometry (GC-MS). 48 and 41 compounds with relative contents greater than 0.50% were identified from first-grade and top-grade tea, respectively, of which 27 were common constituents. The main volatile components of the first-rank waterfall Maofeng tea were nonanal (9.22%), linalool (4.75%), geraniol (4.07%), (1.16%), undecyl phthalate (2.94%), hexadecane (2.35%), hexanal (2.00%), 1-octanol Methyl-5-hepten-2-one (1.86%). The main volatile components of the premium waterfall Maofeng tea are nonanal (8.85%), 1-octen-3-ol (6.37%), undecanal (4.81%), 2,5,5-trimethyl- Hexene (2.84%), octanal (2.73%), 1-octanol (2.63%), , 1-pentanol (2.20%), hexanal (2.16%). Two levels of the waterfall Maofeng tea main volatile components are roughly the same, but the content of each component there is a certain difference.