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

对缅甸竹管茶的风味成分进行了分析。采用固相微萃取法（SPME）对风味成分进行分析。β-离子酮和环氧化物作为类胡萝卜素的热解产物新形成。而且，苯酚也主要作为烟雾的一种成分形成。热分解产生没食子儿茶素和没食子儿茶素-3-没食子酸酯。关于儿茶素。测定了栽培茶叶叶绿体（cp） DNA核糖体RNA成熟酶（matK）区域的核苷酸序列，以评价栽培茶叶的遗传多样性。对来自印度、孟加拉国、缅甸、泰国、老挝、越南、中国和日本的118种栽培茶叶进行了分析。茶树matK DNA的1230个核苷酸序列显示13个变异。这些变化定义了10种不同的类型（CJ、AA、AB、AC、AE、IC、IM、TM和TV）。通过核苷酸序列分析，将日本、中国东部和印度、孟加拉国茶园样品的matK核苷酸序列划分为CJ型（AA、AB、AC、AE、IC、IM、TM和TV）。东南品种的matK序列可分为3组。将CI型、AA型和AB型分别置于山茶（品种）组。中华种和assamica变种)。AC型、IC型、IM型、TM型和TV型对taliensis和irrawadiensis具有较强的亲和性。东南亚地区种植的茶也属于中华茶属。然而，泰国和越南的本地品种将与形态相近的分类群联系在一起。在本研究中，我们证明了C.irrawadiensis和C.taliensis的成员是广泛分布在东南亚的流行品种。

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.