1. Method: To determine the DPPH free radical scavenging activity and assay of four bioactive components: baicalin, baicalein, wogonin and wogonin 7 O glucuronide by HPLC. 方法：测定清除DPPH自由基活性，并以HPLC法测定黄芩苷、黄芩素、汉黄芩苷和汉黄芩素的含量。
2. The compounds in Gynostemma pentaphyllum were extracted and purified, and the free radical DPPH scavenging activity of the extracts was determined. 对绞股蓝中的化合物进行了初步分离、提取，并测定了分离得到的各片段的DPPH
3. The cellulose-ethanol extraction method shows high effectiveness, the crude extract has the highest yield with stronger DPPH radical scavenging activity. 采用中等浓度的乙醇溶液作为纤维素酶的反应体系可有效提高红景天总黄酮的浸出率，粗提物得率高，且DPPH清除活性较强。
4. Objective:To study the DPPH free radical scavenging effect by electron spin resonance(ESR). 目的：探讨锦灯笼提取物对DPPH自由基的清除作用。
5. The mechanism of scavenging DPPH radical using dihydromyricetin and dihydromyricetin laurate as antioxidants was explored by quantum chemistry theory. 并用量子化学方法对二氢杨梅素衍生物的酯化度与清除DPPH自由基抗氧化活性之间的关系进行分析和解释。
网络释义
scavenger pump scavenging air pump scavenging pump 换气泵;
scavenger pump scavenging air pump scavenging pump 换气泵;
scavenger pump scavenging air pump scavenging pump 换气泵;
free radical scavenging agent 释义：自由基清除剂,游离基净化剂;
Observation of the rehabilitative curative effects after the radical operation or modiffied radical operation of mastocarcinoma 中国临床康复 - 无;
