Study on Extraction and Inclusion Process of Volatile Oil from Citri Grandis Exocarpium with Saturated Aqueous Solution / 中国中医药信息杂志

ABSTRACT

Objective To optimize the processes of extraction and inclusion of volatile oil from Citri Grandis Exocarpium. Methods With yield ratio of volatile oil as evaluation index, single factor experiments were used to study the extraction process of volatile oil. With the inclusion rate of the volatile oil and the yield of inclusion as evaluation indexes, saturated aqueous solution was used to the L9(34) orthogonal experiments to reach the best inclusion process optimization. And the microscopic imaging analysis and X-ray scattering technology were adopted to character the inclusion compound. Results The optimum extraction process of volatile oil was extracted for 10 hours with 10 folds the amount of water, and without soaking. The optimum conditions of inclusion process were as follows: volatile oil (mL): β-CD (g): water (mL) ratio was 1:8:80; inclusion temperature was 50 ℃; inclusion time was 3 hour. The validation experiments of the inclusion rate of the volatile oil and the yield of inclusion were 91.50% and 88.36%. Microscopic imaging analysis and X-ray scattering technology proved the inclusion compound had been formed. Conclusion Optimal extraction and inclusion process are feasible and stable, which can provide certain supporting data for preparation and production.