摘要:
BJGF1-2是从‘白鸡冠’自然杂交后代中选育的茶树新品系，为明确其茶类适制性及香气成分，2017-2019年春季采摘BJGF1-2鲜叶，分别按红茶、绿茶、白茶、乌龙茶工艺进行制样，对样品进行感官审评，并对香气成分进行检测。结果表明：BJGF1-2红茶表现为薄荷香，主要香气成分为水杨酸甲酯、香叶醇、苯乙醇、β-芳樟醇、苯甲醇、氧化芳樟醇Ⅱ（呋喃型）等，感官审评结果比对照高0.2分；BJGF1-2绿茶表现为嫩香稍带花香，主要香气成分为水杨酸甲酯、顺-已酸-3-已烯酯、吲哚、顺-茉莉酮、橄榄醇、香叶醇、橙花叔醇等，感官审评结果比对照高0.2分；BJGF1-2白茶表现为毫香显，主要香气成分为水杨酸甲酯、香叶醇、β-芳樟醇、苯甲醛、苯乙醇、苯甲醇、β-紫罗酮等，感官审评结果比对照高0.4分；BJGF1-2乌龙茶表现为花香显，主要香气成分为水杨酸甲酯、吲哚、橙花叔醇、顺-已酸-3-已烯酯、香叶醇、己酸已酯等，感官审评结果比对照高1.6分。BJGF1-2制红茶、绿茶、白茶和乌龙茶总分均比对照高或与对照相当，说明BJGF1-2是一个多茶类兼制的茶树新品系。
关键词:
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新品系
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茶类
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适制性
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香气成分
Abstract:
A new natural hybrid Baijiguan tea cultivar, BJGF1-2, wasevaluated for its suitability to be processed into varieties of teas. The springleaves plucked from the tea bushes in 2017-19 were made into black, green,white, and oolong teas that were evaluated by sensory panels. The aromatic compositionof the tea specimens was determined by headspace solid phase microextraction followedby GC-MS analysis. The resulting black tea carried a mint note and containedaromatics mainly methyl salicylate, geraniol, phenylethanol, β-linalool, benzylalcohol, and linalool oxide II (furan type). The green tea had a delicate floralfragrance with principally methyl salicylate, cis-hexanoate-3-hexenyl ester,indole, cis-jasmone, olive alcohol, geraniol, and nerolidol in it. The whitetea that carried a trichomes flavor was largely composed of methyl salicylate,geraniol, β-linalool, benzaldehyde, phenylethanol, benzyl alcohol, andβ-ionone. And the major volatiles in the typically flowery oolong tea includedmethyl salicylate, indole, nerolidol, cis-hexanoate-3-hexenyl ester, geraniol,and hexanoate. The overall sensory scores on these experimental products ofBJGF1-2 were either higher than or equal to that of control. Hence, the newcultivar was considered highly desirable and suitable for processing into qualityteas of various types.
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