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在满山红叶挥发油提取工作中,我们曾采取用间接法和直接法,提油率仪为理论收率(中国药典1963年版附录挥发油测定法中乙法测定的含量)的50～60%。文献报道[中草药通讯(12):16.(7)∶5,1978]升温可以提高出油率。从1979年开始,我们采用过热水蒸气蒸馏法(生药罐中温度110℃,压力0.4kg/cm~2)提取,出油率达理论收率的80%。现将该法介绍如下:将满山红叶(黑龙江省)生药250kg,放入生药罐中,缓缓通入蒸气(罐内温度110℃,内压0.4kg/cm~2)6～8小时,蒸气经列管冷却器充分冷却后再经油水分离器分离,即得挥发油(符合中国药典1977年版满山红油项下的各项规定)。实验装置见附图。
In the extraction of volatile oil from Mangshan Hongye, we have used the indirect method and the direct method, and the oil extraction rate instrument is the theoretical yield (the content of the Chinese Pharmacopoeia 1963 version of the Volatile Oil Determination Method for the determination of the content of the B method) of 50-60%. According to reports in the literature [Chinese Herbal Medicine (12):16.(7):5, 1978], warming can increase oil yield. Since 1979, we have used superheated steam distillation (boiling temperature 110 °C, pressure 0.4kg/cm ~ 2) extraction, the oil yield of 80% of the theoretical yield. The law is introduced as follows: Put the raw medicine of Heilongjiang Hongye (Heilongjiang Province) 250kg into a raw medicine tank, slowly pass into the steam (pot temperature 110°C, internal pressure 0.4kg/cm~2) for 6 to 8 hours, The vapor is cooled by the tube cooler and then separated by an oil-water separator to obtain the volatile oil (in compliance with the provisions of the 1977 edition of the Chinese Pharmacopoeia under the Manshan Red Oil Project). See experimental device in the attached drawing.