牛蒡叶多酚提取液抑制亚硝化反应的研究

摘要

通过先进的超声波-微波萃取技术，在体外模拟胃液条件下，研究利用正交试验法从牛蒡叶中获得对亚硝胺有阻断作用和亚硝酸盐有清除作用的多酚提取液的最佳工艺，结果表明：从牛蒡叶中提取多酚物质的最佳工艺是：料液比1∶20（g/mL），70%的乙醇溶液，微波500 W，提取时间30 s，其对亚硝胺合成的最大阻断率是93.2%，对亚硝酸钠的最大清除率是92.7%。%Under simulate gastric juice in vitro, the optimal processes of extract of polyphenol from burdock leaves which had effect on inhibition of nitrosation and scavenging of sodium nitrite were studied by advanced supersonic wave-microwave extraction technology. The results showed that the optimal processes were extract-ing polyphenol from burdock leaves with 70%alcohol solution for thirty seconds at the 1∶20 (g/mL) ration of solid to solution under 500 W microwave. The maxium capabilities of inhibiting the production of nitrosamine and scavenging sodium nitrite were 93.2%and 92.7%.