[1] Wan Xiaochun. Tea Biochemistry[M]. Beijing:China Agricultural Press,2005. 8

[2] Yang Hongjie. Yunan Puer-Tea[M]. Kunming:Yunnan Science & Technology Press,2004

[3] Li Daxiang,Fang Shihui,Yang Rongjun et al.. Effects of processing for green and black teas on the polyphenols in tea leaves[J]. China Tea Processing,2005,(4):23,24-29

[4] Lu Haipeng,Gu Jiping,Lin Zhi et al.. Advance in the study on the chemical composition and biological activity of Pu-er Tea[J]. J. Tea Sci.,2007,27(1):8-18

[5] The technital training committee of teaching material of editor of Depart-ment of Agriculture. Pre-manufacturing Technique for Tea[M]. Beijing:China Agricultural Press,1994

[6] Zhou Jianping,Wang Lu,Zeng Rusheng. Structural Analysis of Organic Compounds[M]. Beijing:Science Press,2005