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Journal of Tea Science ›› 2020, Vol. 40 ›› Issue (3): 352-362.doi: 10.13305/j.cnki.jts.2020.03.006

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Analysis of Fat Content and Fatty Acid Composition and Absolute Content in the Tea Seeds from Southern Henan Tea Germplasms

CHANG Yali1, HUANG Xiaobing2, JIANG Shuangfeng3,*, HUANG Shuangjie1, SUN Mufang1, LIU Wei1, GUO Guiyi1,*   

  1. 1. Tea Science Department, Xinyang Agriculture and Forestry University/Henan Key Laboratory of Tea-plants Comprehensive Utilization in Sourthern Henan Province, Henan Engineering Research Center of Tea Processing and Testing, Xinyang 464000, China;
    2. Agricultural products processing research institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang 524000, China;
    3. Xinyang Academy of Agricultural Sciences/Henan Provincial Tea Engineering Researching Center, Xinyang 464000, China
  • Received:2019-08-04 Revised:2019-08-17 Online:2020-06-15 Published:2020-06-09

Abstract: The kernel percentage, fat content and fatty acid composition and absolute content of the seed kernel of 42 tea germplasm materials from Southern Henan were analyzed in this paper. The results show that the kernel percentage ranged from 33.53% to 71.60%, the fatty content was determined with Soxhlet extraction, varied from 17.77% to 38.39%, totally, 21 fatty acids were identified by GC-MS, and the range of main fatty acid contents, including palmitic acid, stearic acid, cis-oleic acid, linoleic acid and α-linolenic acid, were 2.64%-5.70%, 0.21%-1.11%,7.33%-17.29%, 0.09%-8.44% and 0.01%-0.15%, respectively. Correlation analysis shows that cis-oleic acid was significantly negatively correlated with tridecanoic acid, myristic acid and cis-eicosadienoic acid, linoleic acid was significantly negatively correlated with trans-oleic acid and cis-docosahexaenoic acid. The content ratio of saturated fatty acids, monounsaturated fatty acids and polyunsaturated fatty acids of seed kernel of Shuixian 7202 was 3.08∶12.16∶1, and others’ were around 1∶2.69∶1.37. According to higer kernel percentage and fat content of seed kernel, a total of eight tea cultivars including Zhonghuang 1, Nongkangzao, Yingshuang, Echa 11, Longjing 43, Zhongxuan 8, Laoshan 3 and Huangjinye were initially screened as candidate cultivars for constructing tea garderns harvesting leaf and seed.

Key words: Camellia sinensis, tea seed, fat, fatty acid, composition, content

CLC Number: