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Investigation of free amino acid, total phenolics,antioxidant activity and purine alkaloids to assess the health properties of non-Camellia tea

引用

Acta Pharmaceutica Sinica B 2016年第2期6卷 170-181页

作者： Wu Bi Chunnian He Yunyun Ma Jie Shen Linghua Harris Zhang Yong Peng Peigen Xiao Institute of Medicinal Plant Development Chinese Academy of Medical Science Peking Union Medical College Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine Ministry of Education phyto medix co.

To find novel functional beverages from folk teas, 33 species of frequently used non-Camellia tea(plants other than Camellia) were co.lected and co.pared with Camellia tea(green tea, pu-erh tea and black tea) for the first time. Data are reported here on the quantities of 20 free amino acids(FAAs) and three purine alkaloids(measured by UHPLC), total polyphenols(measured by Folin-Ciocalteu assay), and antioxidant activity(DPPH). The total amounts of FAAs in non-Camellia tea(0.62–18.99 mg/g) are generally less than that of Camellia tea(16.55–24.99 mg/g). However, for certain FAAs, the quantities were much higher in some non-Camellia teas, such as γ-aminobutyric acid in teas from Ampelopsis grossedentata, Isodon serra and Hibiscus sabdariffa. Interestingly, theanine was detected in tea from Potentilla frutico.a(1.16±0.81 mg/g). Furthermore, the co.tent of polyphenols in teas from A. grossedentata, Acer tataricum subsp. ginnala are significantly higher than those from Camellia tea;teas from I. serra, Pistacia chinensis and A. tataricum subsp. ginnala have remarkable antioxidant activities similar to the activities from green tea(44.23 μg/m L). Purine alkaloids(caffeine, theobromine and theophylline) were not detected in non-Camellia teas. The investigation suggest some non-Camellia teas may be great functional natural products with potential for prevention of chronic diseases and aging,by providing with abundant polyphenols, antioxidants and specific FAAs.

关键词： Non-Camellia tea Amino acids Polyphenols Purine alkaloids Antioxidant activity

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