大花葵花色苷抑菌功能研究

本项研究通过采用固体培养和液体培养的试验方法,进行大花葵花(Malvasylvestris)色苷对金黄色葡萄球菌、大肠杆菌和黑曲霉的抑菌试验。结果表明:大花葵花色苷对金黄色葡萄球菌有很强的抑制作用,而对大肠杆菌和黑曲霉没有抑制现象发生。在固体培养试验中大花葵花色苷随着浓度的增加,对金黄色葡萄球菌的抑制程度越大,当大花葵花色苷浓度为10g/L时抑菌圈平均直径为6mm,当浓度增加至30g/L时,抑菌圈平均直径为16mm。而且,高浓度的大花葵花色苷溶液对金黄色葡萄球菌有长时间的抑制作用。

Bacteriostasic activity of anthocyanin of Malva sylvestris

Bacteriostasic activity experiments on anthocyanin extracted from Malva sylvestris inhibiting Staphylococcus aureus, Escherichia coli, Aspergillus niger, were conducted by using solid and liquid culture methods. The results showed that the anthocyanin of M. sylvestris had a great bacteriostasic activity to Staphylococcus aureus but had no bacteriostasic activity to both Escherichia coli and Aspergillus niger. The bacteriostasic activity to Staphylococcus aureus increased with increasing content of anthocyanin of Malva Sylvestris in the solid-culture experiment. The average diameters of bacteriostasic circle for Staphylococcus aureus was 6, 13.5, and 16.0 mm at 10g·L⁻¹, 20g·L⁻¹, and 30g·L⁻¹ contents of anthocyanin of M. sylvestris, respectively. Moreover, this bacteriostasic activity kept long time as anthocyanin was of the high concentration. Biography: CHENG Cui-lin (1974–), female, Assistant in Food Science and Genetic Engineering Academy, Harbin Institute of Technology, Harbin 150086, P. R. China.