African Journal of
Biotechnology

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12487

Full Length Research Paper

Effect of ultraviolet B irradiation on accumulation of catechins in tea (Camellia sinensis (L) O. Kuntze)

Zheng XQ, Jin J, Chen H, Du Y.Y, Ye JH, Lu JL, Lin C, Dong JJ, Sun QL, Wu LY and Liang YR*
  Tea Research Institute of Zhejiang University, Hangzhou 310029, China.
Email: [email protected]

  •  Accepted: 18 August 2008
  •  Published: 17 September 2008

Abstract

 

Effect of UV-B irradiation time on accumulation of foliar catechins in two tea cultivars was investigated. Low influence rate and short term irradiation of UV-B stimulated accumulation of major tea catechins, resulting in an increase in level of total catechins. Excessive irradiation of UV-B supressed the accumulation of tea catechins. Epigallocatechin gallate (EGCG) increased more quickly than the other catechins under appropriate UV-B irradiation. The difference in response of different tea cultivars to UV-B is discussed.

 

Key words: Camellia sinensis, UV-B, catechins, tea cultivar, influence rate, irradiation time.

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This article is published under the terms of the Creative Commons Attribution License 4.0

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