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Analysis and classification of the flavor component of the traditional tea.

传统茶叶风味成分分析与分类

基本信息

批准号：
14580141
负责人：
KATOH Miyuki
金额：
$ 2.3万
依托单位：
Kagawa University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2003
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14580141/
关键词：
Tea cpDNA matK flavor SPME matK

项目摘要

The flavor component analyzed the bamboo pipe tea in Myanmar. Flavor component was analysis Solid phase micro extraction (SPME) method. β-ionone and epoxide were newly formed as the result as a carotenoid pyrolysate. And, the phenol was also mainly formed as a component of the smoke. There was the generation of gallocatechin and gallocatechin-3-gallate which were created by the thermal decomposition. on the catechin.Nucleotide sequences of ribosomal RNA maturase (matK) region in chloroplast (cp) DNA were determined to assess genetic diversity within cultivated teas. One hundred-eighteen cultivated teas from India, Bangladesh, Myanmar, Thailand, Laos, Vietnam, China and Japan were analyzed. The 1.230 aligned nucleotide sequences of the matK DNA of the cultivated teas showed 13 variations. These variations in the matK defined 10 different types (CJ, AA, AB, AC, AE, IC, IM, TM and TV). By nucleotide alignment analysis, the matK nucleotide sequences in the samples from Japan and eastern China and from tea estates in India and Bangladesh were divided into CJ types (AA, AB, AC, AE, IC, IM, TM and TV). The matK sequences of southeastern cultivars were fragmented into three groups. The CI, AA and AB types were placed in the group Camellia sinensis(var.sinensis and var. assamica). The AC, IC, IM, TM and TV types had strong affinity to C.taliensis and C.irrawadiensis. The cultivated teas in the estates of Southeast Asia region also belonged to C.sinensis. However, the native cultivars of Thailand and Vietnam will be associated with morphologically close taxa. In this study, we demonstrated that member of C.irrawadiensis and C.taliensis are popular cultivars found widely in the southeastern Asia.

对缅甸竹筒茶的风味成分进行了分析。采用固相微萃取(SPME)法分析香气成分。β-紫罗兰酮和环氧化物是新生成的类胡萝卜素热解产物。而且，苯酚也主要是作为烟雾的一个成分形成的。热分解生成了没食子儿茶素和没食子儿茶素没食子酸酯。在儿茶素方面，测定了叶绿体(Cp)DNA中核糖体RNA成熟酶(MatK)区域的核苷酸序列，以评估栽培茶的遗传多样性。对来自印度、孟加拉国、缅甸、泰国、老挝、越南、中国和日本的118种栽培茶进行了分析。栽培茶树MatK DNA的1.230个核苷酸序列有13个变异。MatK的这些变异定义了10种不同的类型(CJ、AA、AB、AC、AE、IC、IM、TM和TV)。通过核苷酸比对分析，将日本和中国东部以及印度和孟加拉国茶园的matK核苷酸序列划分为CJ型(AA、AB、AC、AE、IC、IM、TM和TV)。将东南栽培品种的matK序列分成3组。将CI、AA和AB型置于茶树组(中国山茶和山茶组)。Asamica)。AC、IC、IM、TM和TV型对塔里库蚊和伊氏库蚊有较强的亲和力。东南亚地区庄园中的栽培茶也属于中华绒毛茶。然而，泰国和越南的本地栽培品种将与形态上相近的类群联系在一起。在这项研究中，我们证明了伊拉瓦迪斯和塔里木是广泛存在于东南亚的流行品种。