干桂花窨制对改善龙井茶陈味的研究
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摘要
采用顶空固相微萃取法(SPME)结合气相色谱质谱联用技术(GC-MS),对干桂花窨制陈化龙井过程中的挥发物质进行检测。结果表明,高温蒸制可以改善茶叶的陈味,提高茶坯的含水量,利于花茶窨制,而常温吸湿干燥下的花茶品质好于低温烘干的花茶。
SPME and GC-MS was used to detect the volatile matter in the process of dry sweet-scented osmanthus scenting,to study the influence of pretreatment of high temperature steamed tea billet on the scenting effect and the effect of low temperature baking and moisture absorption drying on the flavor improvement of tea was explored by sensory evaluation. Through the high temperature steaming can improve the tea flavor, and improving the water content of tea billet is conducive to tea scenting system. The quality of scented tea of moisture absorption at normal temperature was better than that of low temperature drying.
SPME and GC-MS was used to detect the volatile matter in the process of dry sweet-scented osmanthus scenting,to study the influence of pretreatment of high temperature steamed tea billet on the scenting effect and the effect of low temperature baking and moisture absorption drying on the flavor improvement of tea was explored by sensory evaluation. Through the high temperature steaming can improve the tea flavor, and improving the water content of tea billet is conducive to tea scenting system. The quality of scented tea of moisture absorption at normal temperature was better than that of low temperature drying.
引文
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[2]李艳庆,曹佩玲,花茶“低温长窨,湿坯连窨”工艺实验初报[J].中国茶叶,1995(2):36-37.
[3] HIGUTI M,SATO S,HAMASAKI M,et al. Analyzing the heated aroma compounds of tea by SPME(solid phase microextraction)method with GC using FTD[J].Chagyo kenkyu hokoku,2004,2004(98):33-42.
[4]王道平,甘秀海,梁志远,等.固相微萃取法与同时蒸馏萃取法提取茶叶香气成分[J].西南农业学报,2013(1):131-135.
[5]刘玉芳,刘晓东,林国轩,等.绿茶低温真空与热风联合干燥新工艺研究[J].茶叶科学,2013,33(4):345-350.
[6]施兆鹏.茶叶审评与检验[M].北京:中国农业出版社,2010.8.
[7]方观玉,郑文慧,卢秋华,等.3种茶叶中水分含量检测方法比较[J].福建茶叶,2014,36(4):20-22.
[8]郭建华.绿茶贮藏过程中挥发性物质变化规律的研究[D].杭州:浙江大学,2011.
[9]王华夫.茶叶香型与芳香物质[J].中国茶叶,1989(2):16-17.
[10]曹慧,李祖光,沈德隆.桂花品种香气成分的GC/MS指纹图谱研究[J].园艺学报,2009(3):391-398.
[11]杨秀莲,施婷婷,文爱林.不同桂花品种香气成分的差异分析[J].东北林业大学学报,2015(1):83-87.