Chemical analysis of methanol . determination of permanent acidity with phenol red 甲醇的化学分析.苯酚红永久酸度的测定
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Method : resolving phlegm effects of the different stir - baked slices were evaluated by the excretion of phenol red in mice and the amount of expectoration drainage in rats 方法：考察了紫菀生品及酒洗、蜜炙、清炒、蒸制、醋炙等不同炮制方法的饮片对小鼠气管酚红排泌量的影响和对大鼠气管排痰量的影响。
