食品科学 ›› 2019, Vol. 40 ›› Issue (18): 248-252.doi: 10.7506/spkx1002-6630-20180927-308

• 成分分析 • 上一篇    下一篇

HS-SPME-GC-MS对传统红碎茶和CTC红碎茶挥发性化合物分析和比较

刘洪林,曾艺涛,赵 欣   

  1. (1.重庆第二师范学院,重庆市功能性食品协同创新中心,重庆市功能性食品工程技术研究中心,功能性食品研发重庆市工程实验室,重庆 400067;2.重庆市辅仁中学校,重庆 400067)
  • 出版日期:2019-09-25 发布日期:2019-09-23
  • 基金资助:
    重庆高校创新团队建设计划资助项目(CXTDX201601040)

Comparative Analysis of Volatile Profiles Orthodox Black Teas and CTC Black Teas Using HS-SPME-GC-MS

LIU Honglin, ZENG Yitao, ZHAO Xin   

  1. (1. Chongqing Collaborative Innovation Center for Functional Food, Chongqing Engineering Research Center of Functional Food, Chongqing Engineering Laboratory for Research and Development of Functional Food, Chongqing University of Education, Chongqing 400067, China; 2. Chongqing Furen High School, Chongqing 400067, China)
  • Online:2019-09-25 Published:2019-09-23

摘要: 选取中国和斯里兰卡7?个地区的14?个不同商业品牌的红碎茶,包括传统加工(orthodox,OTD)红碎茶和压碎撕裂卷曲(crush, tear and curl,CTC)红碎茶,采用顶空固相微萃取-气相色谱-质谱联用法对其挥发性风味化合物比较分析。结果鉴定出59?种挥发性化合物,其中萜烯类化合物占10.38%~60.34%,酮类物质占1.1%~22.09%,酯类物质占3.18%~41.83%,为最丰富的3?类挥发性化合物。结果表明,CTC红碎茶中挥发性成分数量较低,其中醛类化合物和醇类化合物含量较低,但酯类化合物含量高于OTD红碎茶。萜烯指数可被用作区分茶叶产地的一种手段,但还缺乏精准性,需结合其他参数鉴定茶叶产品产地。

关键词: 传统加工红碎茶, 压碎撕裂卷曲红碎茶, 挥发性化合物, 顶空固相微萃取-气相色谱-质谱联用法

Abstract: A total of 14 different commercial brands of black teas including orthodox (OTD) and crush, tear and curl (CTC) teas were collected from markets in six regions of China as well as Sri Lanka, and their volatile flavor compounds (VFC) were comparatively analyzed using headspace solid phase micro-extraction coupled with gas chromatography-mass spectrometry (HS-SPME-GC-MS). In total, 59 volatiles were identified from these teas among which terpenes (10.38%–60.34%), ketones (1.1%–22.09%) and esters (3.18%–41.83%) represented the most abundant compounds. The results showed that CTC teas contained a lower number of volatile components and lower contents of aldehydes and alcohols but higher contents of esters than did OTD teas. The data presented in this study also suggested that terpene index might be used as an alternative approach for the determination of the geographical origin of teas, but the accuracy is not sufficient yet, and other parameters are needed to identify the origin of tea products.

Key words: orthodox black tea, crush, tear and curl black tea, volatile profiles, headspace solid phase micro-extraction coupled with gas chromatography-mass spectrometry

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