研究厚朴炮制前后挥发油的变化.结果表明:总含量降低,炒黄与姜炙厚朴相似,降低26%,炒焦降低42%;而其化学成分未发生明显变化,气相色谱图基本一致.实验发现挥发油中含有发汗、祛痰、平喘的成分.

Changes in the contents and chemical composition of volatile oil in Magnolia officinalis Rehd.et Wils.before and after processing were studied.Results showed that the volatile oil content was reduced by 26% by parching or frying with ginger,and reduced by 42% by charring,while the chemical composition remained un-changed and the gas chromatogram showed almost no difference.In the experiment the volative oil was found to contain some composition which could cause diaphoresis,resolve.phlegm and allay asthma.