Optimization of extraction and purification process of effective components of Olibanum based on response surface method / 中草药

ABSTRACT

Objective: To optimize the extraction and purification process of the boswellic acids components in the frankincense. Methods: The extraction amount and extract yield of 13 boswellic acids (3-oxotirucall-8,24-dien-21-oic acid, 3α-acetoxy-tirucall-7, 24-dien-21-oic acid, 3-hydroxytirucall-8,24-dien-21-oic acid, acetyl 11α-methoxy-β-boswellic acid, 3α-hydroxy tirucall-7,24-dien- 21-oic acid, 11-keto-boswellic acid, 3-O-acetyl-α-boswellic acid, 3α-acetyloxylanosta-8,24-dien-21-oic acid, 3β-acetoxy-5α-lanosta- 8,24-dien-21-oic acid, 3-acetyl-11-keto-β-boswellic acid, 3-acetyloxy-tirucall-8,24-dien-21-oic acid, α-boswellic acid, β-boswellic acid) in frankincense were detected by UPLC-TQ/MS, the extraction method was investigated by single factor and response surface, the extraction solvent, ratio of solid to liquid, extraction time and extraction times were investigated on the extraction process, and the extract was purified by alkali dissolving acid precipitation method and the purification process parameters were investigated by single factor and orthogonal test to determine the best purification process. Results: The optimum condition for the extraction of the frankincense is that twenty times of 95% ethanol for four times reflux extraction and 62 min for each time. Optimum purification process was as following Dissolve in lye pH 12-13, and the solution was precipitated at 0-4 ℃ with pH < 2 for 30 min. The purity of boswellic acids was 73.87%. Conclusion: The optimized extraction and purification process is stable and feasible, which is suitable for the extraction and purification of effective fraction of frankincense and beneficial to give full play to the medicinal value of frankincense and provide scientific basis for material basis research of frankincense.