中药大黄提取色素的抑菌作用研究

用乙醇从中药大黄中提取色素 ,对大黄色素抑菌作用进行研究。结果表明 ,一定浓度的大黄色素对大肠杆菌、金黄色葡萄球菌、黑曲霉、啤酒酵母都有抑制作用 ,其抑菌作用强弱的顺序为 :金黄色葡萄球菌 >黑曲霉 >啤酒酵母 >大肠杆菌 ,尤其对金黄色葡萄球菌抑菌作用更为显著。实验结果同时表明 ,大黄色素在中性、酸性抑菌作用最强 ,并能耐受高温短时、超高温瞬时热处理 ,从而推断它可作为抑菌剂应用于食品中。

Study on bacteriostasis of pigment from Radix et Rhizoma

This paper studied the bacteriostasis of pigment which was extracted from Radix et Rhizoma with ethanol.The results indicated that pigment with a certain concentration could inhibit the growth of Escherichia coli,Staphylococus aureus,Saccharom|yces cerevisiae and Aspergillus niger. The order of bacteriostasis toward microbes from strong to weak was Staphylococus aureus>Aspergillus niger>Saccharomyces cerevisiae>Escherichia coli., especially antimicrobile to Staphylococus aureus. The dependence of activity on heating conditions was shown as well.It's concluded that the pigment could be used in food as an antispetic.