全自动顶空固相微萃取法分析紫娟茶香气成分

采用全自动顶空固相微萃取（headspace solid-phase microextraction,HS-SPME）结合气相色谱-质谱（gas chromatography-mass spectrometry,GC-MS）分析云南特种紫娟晒青茶和紫娟烘青茶香气成分,并比较利用常规大叶种制成的晒青毛茶的香气成分的差异。结果表明,紫娟晒青茶和紫娟烘青茶香气成分较接近,但比大叶种茶丰富,且差异较大;紫娟晒青茶的香气成分主要是芳樟醇、二氢猕猴桃内酯、2,6-二甲基-3,7-辛二烯-2,6-二醇、咖啡因、6,10,14-三甲基-2-十五烷酮、β-紫罗酮、十六烷、植醇、香叶醇、芳樟醇氧化物、α-松油醇等;紫娟烘青茶的香气成分主要是植醇、咖啡因、芳樟醇、十六烷、芳樟醇氧化物、二氢猕猴桃内酯、十八烷、茉莉酮、苯甲酸叶醇酯、橙花叔醇、十七烷等;而大叶种晒青茶的香气成分主要是植醇、芳樟醇、咖啡因、β-紫罗酮、邻苯二甲酸二异丁酯、6,10,14-三甲基-2-十五烷酮、十六烷酸、邻苯二甲酸二丁酯、香叶基丙酮等。 

Analysis of Zijuan tea aroma components of fully automatic HS-SPME

The aromatic components of Yunnan specific Zijuan sun-dry green tea and Zijuan basket-fired green tea were extracted by fully automated headspace solid-phase microextraction (HS-SPME) , and were identified by gas chromatography-mass spectrometry (GC-MS) . Then comparison difference with the regular Daye sundry green tea was made. Results showed that the aromatic components of Zijuan sun-dry green tea and Zijuan basket-fired green tea were very close, but more abundant than that of Daye sun-dry green tea. The major aromatic components in Zijuan sun-dry green tea were linalool, dihydroactinidiolide, 3, 7-octadiene-2, 6-diol2, 6-dimethyl, caffeine, 6, 10, 14-trimethyl-2-Pentadecanone, beta-ionone, hexadecane, phytol, geraniol, linalool oxide, α-terpineol, the major aromatic components in Zijuan basket-fired green tea were phytol, caffeine, linalool, hexadecane, linalool oxide, dihydroactinidiolide, octadecane, jasmone, benzoic acid cis-3-hexenyl ester, nerolidol, heptadecane, while the major aromatic components in Daye sun-dry green tea were phytol, linalool, caffeine, beta-ionone, diisobutyl phthalate, 6, 10, 14-trimethyl-2-Pentadecanone, hexadecylic acid, dibutyl phthalate, geranylacetone, etc.