提取出了崂山绿茶中黄酮,对其中黄酮含量予以测定,设计正交试验对绿茶黄酮提取物的降低亚硝酸盐作用进行了研究。结果发现,4个因素的影响的次序为pH>黄酮提取物质量浓度>温度>时间,最佳的作用条件为65℃下,pH 3.00,黄酮提取物质量浓度为0.066 g/L,反应30 min时,清除率可达87.54%。 Flavonoids from Laoshan green tea were extracted and their flavonoids contents were determined. Orthogonal test was designed to study the effect of reducing the nitrite content of green tea flavonoids extract. The results showed that the order of the four factors was pH> concentration of flavonoids> temperature> time. The optimal conditions were pH = 3.00 at 65 ℃, mass concentration of flavonoids 0.066 g / L, reaction time 30 min , The clearance rate can reach 87.54%.