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四种丽水名优绿茶香气成分分析

Aromatics of Four Premium Lishui Green Teas

  • 摘要:
    目的 了解丽水不同产区名优绿茶的香气物质组成和香气特征,为本地绿茶的后续研究及名优茶开发提供一定的理论参考。
    方法 以丽水4个主要产茶县市的名优绿茶为试验材料,利用气相色谱-质谱联用仪对其香气成分进行检测分析,并结合感官品质评价,挖掘丽水4种茶样的特征香气成分。
    结果 “景宁惠明茶”香型为清香,主要香气物质为α-松油烯、茂并芳庚等(占香气总量的71%);“龙泉白天鹅茶”香型为栗香,主要香气物质为α-松油烯、香叶醇、壬醛、β-月桂烯、茂并芳庚等(占香气总量的55%);“遂昌龙谷丽人茶”香型为熟栗香,主要香气物质为芳樟醇、香叶醇、β-月桂烯等(占香气总量的57%);“松阳银猴茶”香型为嫩栗香,香气持久且带花香,主要香气物质为茂并芳庚、α-松油烯、壬醛、庚醛等(占香气总量的47%)。
    结论 4种丽水名优绿茶的香气物质种类及个数差异较大,其中“遂昌龙谷丽人茶”检测出的香气总数最多。

     

    Abstract:
    Objective The superb quality and outstanding aromatic characteristics of the renowned green teas from Lishui were analyzed for further studies and future development of new product varieties.
    Method Four acclaim green teas made in Lishui were sampled for analysis on aromatics using GC-MS. Sensory evaluation was conducted to determine the quality, aroma, and taste of the brewed tea by a taste panel.
    Result Jingning Huiming Tea, was classified as “mellow fragrant” in aroma with α-terpinene and azulene cyclopentacycloheptene being the major volatiles contributing 71% to the total. Longquan Baitian’e Tea was “chestnut-like” in aroma with α-terpinene, geraniol, nonal, β-myrcene, and azulene cyclopentacycloheptene being the dominant aromatic substances that accounted for 55% of the total. Suichang Longguliren Tea was “roasted chestnut-like” in aroma with linalool, geraniol, and β-myrcene being the major aromatics accounting for 57% of the total. And Songyang Yinhou Tea was “tender chestnut-like” in aroma with locaryl heptanol, α-terpinene, nonal, and heptanal being the major aromatics accounting for 47% of the total.
    Conclusion There were significant differences in aroma type and volatiles in the four green teas from Lishui. Among them, Longguliren Tea from Suichang had the greatest varieties of aromatics.

     

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