OBJECTIVE: To optimize the extraction technology of osthole from the pine needles of Cedrus deodara. METHODS: HPLC method was adopted to determine the content of osthole. Based on single factor test, ethanol volume fraction, extraction time and material-solvent ratio were selected as influential factors, and the content of osthole was selected as response value. Box-Behnken design-response surface methodology was used to optimize the extraction technology of osthole in pine needles of C. deodara. Validation test was conducted. RESULTS: The optimal extraction technology was as follows as ethanol volume fraction of 88%, material-solvent ratio of 1 ∶ 20 (g/mL), extracting for 2 times, lasting for 57 min each time. Under this technology, average content of osthole was 0.675 7 mg/g (RSD=1.78%, n=3), and the relative error of which to predicted value 0.680 9 mg/g was 0.59%. CONCLUSIONS: The optimal extraction technology is simple and feasible,and it can be used for the extraction of osthole from the pine needles of C. deodara.
关键词
雪松松针蛇床子素提取工艺Box-Behnken设计响应面法
Keywords
Pine needles of Cedrus deodaraOstholeExtraction technologyBox-Behnken designResponse surface methodology