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  • Title: [Study on extraction and drying of Ligusticum chuanxiong in Gan-ning Granule].
    Author: Ding YQ, Wan SH, Xu QT, Kang TG.
    Journal: Zhongguo Zhong Yao Za Zhi; 2007 Nov; 32(21):2244-6. PubMed ID: 18309664.
    Abstract:
    OBJECTIVE: To find out the optimum extract process for Ligusticum chuanxiong in Gan-ning Granule, and studyed the methods of concentration and dry for the extract. METHOD: With the yield of ferulic acid as the assessment index, to optimize the 80% alcohol totalling, extracting times and circumfluence time for extract process by the orthogonal design, to optimize the inlet-air temperature, feed speed and density of feed for spry drying by the orthogonal design. RESULT: The optimum procedure was the ferulic acid were extracted for 1 hour with 3 times of 80% alcohol. While extracting times effected it most porminently. The optimal processing conditions of spry drying were inlet-air temperature 120 degrees C, feed speed 8.5 mL x min(-1) and density of feed 1.15, While feed speed effected it most porminently. CONCLUSION: The experimental results provide the basis for the extraction process and drying process of the ferulic acid in ligusticum chuanxiong.
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