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Comparative study of uniform design and orthogonal design in the extraction of Gelsemium alkaloids]
Authors:Lan-lan Zhang  Chang-quan Huang  Zhong-yi Zhang  Jing-ming Lin
Affiliation:Department of Pharmaceutics, Zhujiang Hospital, First Military Medical University, Guangzhou 510282, China.
Abstract:OBJECTIVE: To develop a simple and efficient method for extracting Gelsemium alkaloids. METHODS: Uniform design and orthogonal design were respectively utilized to optimize the 3 factors in the extraction process, namely the type of solvent used, the solid-to-liquid ratio in the extraction system and the reflux time. RESULTS: Both of the design methods adopted trichloromethane as the solvent, with the solid-to-liquid ratio of 1:7.5 and reflux time of 3 h with 3 repetitions for the highest yield of alkaloids. CONCLUSION: Similar results are obtained from the two design methods for extracting Gelsemium alkaloids.
Keywords:
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