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首页> 外文期刊>Bioprocess and Biosystems Engineering >Enzymatic transformation of polydatin to resveratrol by piceid-β-D-glucosidase from Aspergillus oryzae
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Enzymatic transformation of polydatin to resveratrol by piceid-β-D-glucosidase from Aspergillus oryzae

机译：米曲霉中的piceid-β-D-葡萄糖苷酶将白蛋白酶促转化为白藜芦醇

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摘要

Resveratrol is now gaining much attention because of its pharmacological properties. Polygonum cuspidatum has the highest content of resveratrol in plants and is the best material offering resveratrol. However, the content of resveratrol in P. cuspidatum is much lower compared with its glycoside polydatin. In this study, enzymatic transformation of polydatin to resveratrol by piceid-β-D-glucosidase from Aspergillus oryzae sp. 100 was investigated. The biotransformation conditions were optimized. Under the optimized conditions of 60 ℃, pH 5.0, substrate concentration of 40 g/L and piceid-β-D-glucosidase activity of 5 U/mL, enzymatic transformation of polydatin from P. cuspidatum was successfully performed, during which 22.5 g/L of resveratrol was produced after reacting for 4 h, with the substrate conversion rate of 2 g/h/ U of piceid-β-D-glucosidase. A feasible and environment friendly process of enzymatic transformation of polydatin to resveratrol was developed, which provides a promising and competitive alternative for the production of resveratrol.
机译：白藜芦醇由于其药理特性而受到了广泛的关注。虎杖中植物中白藜芦醇的含量最高，是提供白藜芦醇的最佳材料。但是，虎杖假单胞菌中白藜芦醇的含量与其糖苷多苷相比要低得多。在这项研究中，米曲霉spiceid-β-D-葡糖苷酶将白蛋白酶促转化为白藜芦醇。调查了100个。优化了生物转化条件。在60℃，pH 5.0，底物浓度40 g / L，piceid-β-D-葡萄糖苷酶活性为5 U / mL的最适条件下，成功地从虎杖假单胞菌中成功地酶解了苷元，其转化率为22.5 g / L。反应4小时后产生L白藜芦醇，底物转化率为2g / h / U的Piceid-β-D-葡萄糖苷酶。开发了一种可行的，环境友好的方法，可将白藜芦醇苷酶法转化为白藜芦醇，这为白藜芦醇的生产提供了有希望的竞争性选择。

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