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Study on the Purification of Citral in Volatile Oil from Fructus Litseae by Molecular Distillation / 中国药师
China Pharmacist ; (12): 75-78, 2018.
Article in Chinese | WPRIM | ID: wpr-705455
ABSTRACT

Objective:

To establish the purification process of citral in volatile oil from Fructus Litseae by molecular distillation .

Methods:

The twice molecular distillation , GC and area normalization method were used for extracting citral , detecting the contents and describing the efficacy of purification , respectively .The mainly factor concerned was temperature .The conditions were as followsthe system pressure was 3000 Pa, the scraper speed was 300 r· min-1 , the feeding rate was 7.5 ml· min-1 and the distillation tem-perature was 45℃for the first time molecular distillation; the system pressure was 5 Pa, the scraper speed was 300 r· min-1 , the feeding rate was 7.5 ml· min-1 and the distillation temperature was 45℃ for the second time molecular distillation .GC was utilized under the following conditionsthe sample injection was 1 μl, the column temperature was programmed from 70℃to 250℃, the split ratio was 1100 and the flow rate of carrier gas was 1.0 ml· min-1 .

Results:

The content and yield of citral was up to 95.0% and 87.5%, respectively.

Conclusion:

The method of twice molecular distillation in combination with GC to purify and detect citral is es -tablished in the work, which can provide reference for the research on the chemical components of Litsea cubeba(Lour.) Pers.and the preparation of citral .

Full text: Available Index: WPRIM (Western Pacific) Language: Chinese Journal: China Pharmacist Year: 2018 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Language: Chinese Journal: China Pharmacist Year: 2018 Type: Article