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Transformation of Compound K from Saponins in Leaves of Panax notoginseng by Immobilized β-Glucanase

查看全文 作  者:DONG Hui-juan1,2,JIANG Bin-hui3,HAN Ying3,GENG Yong1,ZHAO Yu-qing4 1.Institute of Applied Ecology,Chinese Academy of Sciences,Shenyang 110016,China 2.Graduate School of Chinese Academy of Sciences,Beijing 100039,China 3.School of Resources and Civil Engineering,Northeastern University,Shenyang 110004,China 4.Shenyang Pharmaceutical University,Shenyang 110016,China 高影响力作者 出  处:《Chinese Herbal Medicines》索引2010年第2卷第1期,共7页高影响力期刊 基  金:ZHAO Yu-qing was supportive with a Liaoning Modernization TCM grant (LN403004),China 摘  要:Objective To prepare an active anti-tumor component,compound K(C-K),from saponins in leaves of Panax notoginseng(SLPN) using immobilized β-glucanase.Methods Two entrapments,alginate gel-1(Alg 1) and alginate gel-2(Alg 2),were evaluated for their ability to immobilize β-glucanase.The amount and purity of C-K obtained from the transformation process were analyzed by HPLC,and the immobilizing parameters were optimized.Results β-Glucanase can be immobilized and reused with either of the entrapment.However,using Alg 1 resulted in higher enzyme activity than Alg 2.The optimal concentration of the immobilized enzyme was 10%;The optimal crosslinking time was 4-6 h;and the optimal concentration of the crosslinking agent was 6%- 7%.Conclusion Immobilized β-glucanase shows sustained enzyme activity,good ethanol tolerance,and was reusable for the preparation of C-K from SLPN. 关 键 词:Β-GLUCANASE ginsenoside compound K IMMOBILIZATION saponins in leaves of Panax notoginseng(Burk.) F.H.Chen transformation
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