Studies on Optimum Conditions of Synthesizing Theaflavins by Using Bio-Enzyme Method

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Green tea powder and polyphenol oxidase extracted from eggplant has been used to explore the optimum condition for theaflavins synthesis under single factor and orthogonal experimental design. The results showed that pH value had significant effect on theaflavins synthesis. The optimum reaction condition was, under the temperature of 25°C, the system pH value 4.5, substrates concentration 2.5 g/L, and 35 mL crude enzyme with 196 U, reaction time 40 min, then the total content of theaflavins reached to 7.45 mg.

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929-932

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November 2011

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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[1] Balentine, D.A. Manufacturing and chemistry of tea. 1992: ACS Publications.

Google Scholar

[2] Robertson, A. and Bendall D.S., Production and HPLC analysis of black tea theaflavins and thearubigins during in vitro oxidation. Phytochemistry, 1983. 22(4): pp.883-887.

DOI: 10.1016/0031-9422(83)85016-x

Google Scholar

[3] Kun-bo, W., et al., The effect of PPO isoenzyme on the formation of theaflavin during in vitro oxidation [J]. Journal of Hunan Agricultural University (Natural Sciences), 2007. 4.

Google Scholar

[4] Kun-bo, W., et al., Effects of Tea Catechin Proportions & Physico-chemical Conditions on the Enzymatic Synthesis of Theaflavin. Journal of Tea Science, 2007. 3.

Google Scholar

[5] Kun, Y., Study on the Synthesizing Theaflavins by Using Laccase Enzyme-catalysing Oxidation. Academic Periodical of Farm Products Processing, (2008).

Google Scholar