气质联用分析云南老树茶香气成分

老树茶是一种有别于其他茶类的茶，具有特殊的香气和品质，为了更好的认识和研发老树茶，解决老树茶在市场上信息混乱的问题，应用同时蒸馏萃取法（SDE）提取和气质联用色谱（GC/MS）分析9个具有代表的老树茶样品的香气成分。试验共鉴定出63种香气化合物，其中醇类15种、碳氢化合物13种、醛类14种、酮类9种、酸类8种、酯类4种；主要香气成分有芳樟醇及其氧化产物、α-松油醇、香叶醇、水杨酸甲酯、糠醇、β-紫罗兰酮、苯甲醛、苯乙醛、(E,E)-2,4-庚二烯醛等。研究初步探明老树茶的香气组成与特点，为老树茶的科学开发、消费提供科学依据。

Gas Chromatography-mass Spectrometry Investigation the Aroma Compositions of Old Plant Tea

Old plant tea has a unique aroma and quality distinctive from other tea types. In order to better understand and develop it, and to solve the problem that old plant tea trees＇ information on the market is confusing. In this paper, the aroma compounds of nine representative old plant tea samples were extracted using simultaneous distillation and extraction method （SDE） and determined by capillary gas chromatography-mass spectrometry （GC-MS）. In a total, 63 aroma compounds were identified, including 20 kinds of hydrocarbons, 15 kinds of alcohols, 14 kinds of aldehydes, 9 species of ketenes, 8 kinds of organic acids, 4 kinds of esters. The major aroma compounds are benzyl linalool as well as it＇ s oxidation products, α-terpineol, geraniol, methyl salicylate, furfur alcohol, β-ionone, benzaldehyde, benzeneacetaldehyde and （E, E）-2,4-Heptadienal. This paper revealed the aromatic compositions and features of old plant tea, and provided a scientific basis for the development and consumption of old plant tea.