Plant Diversity ›› 2012, Vol. 34 ›› Issue (4): 409-.doi: 10.3724/SP.J.1143.2012.12008

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Chemical Compositions and Antioxidant Activity of Essential Oil from Green Tea Produced from Camellia taliensis (Theaceae) in Yuanjiang, Southwestern China

ZHU  Li-Fang-1、2, DONG  Hong-Zhu-1, YANG  Shi-Xiong-3, SHU  Hong-Tao-1, XU  Min-1, ZENG  Shu-Fen-4, YANG  Chong-Ren-1、4, ZHANG  Ying-Jun-1   

  1. 1 State Key Laboratory of Phytochemistry and Plant Resources of West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; 2 Graduate University of Chinese Academy of Sciences, Beijing 100049, China;
    3 Key Lab of Biodiversity and Biogeography, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming
    650201, China; 4 Biotech Center of Weihe Pharmaceutical Co., Ltd., Yuxi 653101, China
  • Received:2012-01-12 Online:2012-08-25 Published:2012-05-24

Abstract:

Camellia taliensis belonging to Camellia sect. Thea (Theaceae) is distributed from the western and southwestern areas of Yunnan Province, China to the north of Myanmar. Known as the “wild” tea plant, it has been commonly used for making tea by the local people of its growing area. It is the first investigation of the volatile constituents of the fresh tender leaves of C.taliensis and green teas produced from its tender and older leaves. The volatile constituents were obtained by hydrodistillation and analyzed by GC and GCMS. Ninetyone compounds were identified. The results showed that the main compositions of volatile oil of the fresh tender leaves were hexadecanoic acid (30.52%), linoleic acid (19.82%), phytol (8.75%), and geraniol (2.54%), while monoterpenoids (58.51%) composing of linalool (28.43%), hotrienol (1.13%), αterpineol (11.68%), nerol (4.92%) and geraniol (12.34%) were the major volatile components of its green tea product. From the fresh leaves to the green tea products, 28 aroma components were formed. Among then, the content of (Z, Z, Z)9, 12, 15octadecatrien1ol (peak 77) was up to 1.21% (from tender leaves) and 11.2% (from older leaves), respectively. The DPPH and ABTS+ radical scavenging assays demonstrated a moderate activity of essential oil from the three essential oils of C.taliensis.

Key words: Camellia taliensis, Fresh tender leaves, Green tea products, Essential oil, Hydrodistillation, Antioxidant assays

CLC Number: 

  • Q 946