Study on the UV-Quantitative Analysis of Theabrownins in Pu-Erh Tea
YANG Yan1, PENG Chun-xiu2*, LIU Hua-rong1*, SHENG Jun1, GONG Jia-shun1
1. Faculty of Food Science and Technology, Yunnan Agricultural University, Kunming 650201, China 2. Faculty of Garden and Horticultural, Yunnan Agricultural University, Kunming 650201, China
Abstract：An UV-quantitative analysis method for the theabrownin (TB) in Pu-erh tea and its derived products was established in the present study. The results showed that the Pu-erh tea shows characteristic absorption at the wavelength of 270 nm, which can be used as wavelength for the content determination of TB. The preparation methods of standard TB and standard curve were also established. The determination results show that the method is simple, the results have certain credibility, and the established method can be used for the determination of TB in Pu-erh tea and its derived products.
杨 妍1，彭春秀2*，刘华戎1*，盛 军1，龚加顺1 . 普洱茶中茶褐素含量的紫外光谱法测定 [J]. 光谱学与光谱分析, 2013, 33(07): 1850-1856.
YANG Yan1, PENG Chun-xiu2*, LIU Hua-rong1*, SHENG Jun1, GONG Jia-shun1 . Study on the UV-Quantitative Analysis of Theabrownins in Pu-Erh Tea . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2013, 33(07): 1850-1856.
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