茶叶科学技术
茶葉科學技術
다협과학기술
TEA SCIENCE AND TECHNOLOGY
2013年
4期
25-30
,共6页
陈泉宾%张应根%陈林%王秀萍
陳泉賓%張應根%陳林%王秀萍
진천빈%장응근%진림%왕수평
乌龙茶%香气%品质
烏龍茶%香氣%品質
오룡다%향기%품질
Oolong tea%aroma%quality
以茗科1号(金观音)制成的清香型乌龙茶、闽南乌龙茶和闽北乌龙茶为研究对象,用同时蒸馏萃取法(SDE)提取茶叶香气,气相色谱-质谱联用(GC-MS)测定其香气成分,并对不同类型乌龙茶之间的香气化学成分及含量进行比较。结果表明在被测样品中共检测出47种香组分,其中共有的香气成分有35种,以碳氢化合物、醇类、醛类、酯类为主,橙花叔醇含量占精油总量的30%以上,是最主要的香气物质。香气精油总量、主要香气组分含量、吲哚、橙花叔醇含量高低顺序为清香乌龙茶>闽南乌龙茶>闽北乌龙茶;闽南乌龙茶香气组分44种,数量最多,α-法尼烯、醇类物质含量/精油总量比例最高;闽北乌龙茶酯类物质含量最高,尤其是棕榈酸甲酯、亚油酸甲酯和亚麻酸甲酯。不同类型乌龙茶在香气组分、含量上存在差异,从而形成各自的香气特征。
以茗科1號(金觀音)製成的清香型烏龍茶、閩南烏龍茶和閩北烏龍茶為研究對象,用同時蒸餾萃取法(SDE)提取茶葉香氣,氣相色譜-質譜聯用(GC-MS)測定其香氣成分,併對不同類型烏龍茶之間的香氣化學成分及含量進行比較。結果錶明在被測樣品中共檢測齣47種香組分,其中共有的香氣成分有35種,以碳氫化閤物、醇類、醛類、酯類為主,橙花叔醇含量佔精油總量的30%以上,是最主要的香氣物質。香氣精油總量、主要香氣組分含量、吲哚、橙花叔醇含量高低順序為清香烏龍茶>閩南烏龍茶>閩北烏龍茶;閩南烏龍茶香氣組分44種,數量最多,α-法尼烯、醇類物質含量/精油總量比例最高;閩北烏龍茶酯類物質含量最高,尤其是棕櫚痠甲酯、亞油痠甲酯和亞痳痠甲酯。不同類型烏龍茶在香氣組分、含量上存在差異,從而形成各自的香氣特徵。
이명과1호(금관음)제성적청향형오룡다、민남오룡다화민북오룡다위연구대상,용동시증류췌취법(SDE)제취다협향기,기상색보-질보련용(GC-MS)측정기향기성분,병대불동류형오룡다지간적향기화학성분급함량진행비교。결과표명재피측양품중공검측출47충향조분,기중공유적향기성분유35충,이탄경화합물、순류、철류、지류위주,등화숙순함량점정유총량적30%이상,시최주요적향기물질。향기정유총량、주요향기조분함량、신타、등화숙순함량고저순서위청향오룡다>민남오룡다>민북오룡다;민남오룡다향기조분44충,수량최다,α-법니희、순류물질함량/정유총량비례최고;민북오룡다지류물질함량최고,우기시종려산갑지、아유산갑지화아마산갑지。불동류형오룡다재향기조분、함량상존재차이,종이형성각자적향기특정。
The aroma components of faint-scent type Oolong tea, Southern Fujian Oolong tea and Northern Fujian Oolong tea made from Mingke 1(C. sinensis cv.)were extracted by SDE, and were identified by GC-MS. Then comparison of the aroma components and contents among the Oolong teas was made. Results showed that 47 aroma constituents were identified and 35 of them were identical constituents. The main kinds of aroma components of the 3 samples were hydrocarbon compounds, alcohols, aldehydes and esters. Content of nerolidol accounted for over 30%of all volatile oil, and was a leading aroma. Content of all volatile oil, main aroma matters, indol and nerolidol was in the order of faint-scent type Oolong tea> Southern Fujian Oolong tea> Northern Fujian Oolong tea. Southern Fujian Oolong tea has 44 aroma constituents, and quantity was the most. Content ofα-farnesene and ration of alcohols and content of all volatile oil in Southern Fujian Oolong tea were highest that compared to other Oolong tea. Content of esters was highest to Northern Fujian Oolong tea, in especial methyl hexadecanoate, methyl linoleate and methyl linolenate. By comparison, there were differences in flavors and aroma content among different kinds Oolong tea.