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[Multi-objective optimization of extraction process for red ginseng based upon extraction efficiency and cost

Yi Zhong, Jie-Qiang Zhu, Xiao-Hui Fan

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    Summary

    This study optimized red ginseng extraction to reduce costs. Optimal parameters for extraction time and solution amounts were identified to minimize the unit cost of ginsenosides.

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    Area of Science:

    • Pharmacology
    • Chemical Engineering
    • Natural Product Chemistry

    Background:

    • Red ginseng is a valuable traditional medicine.
    • Optimizing extraction is crucial for cost-effective production of active compounds.
    • Ginsenosides are key bioactive components in red ginseng.

    Purpose of the Study:

    • To optimize the red ginseng extraction process for minimizing the unit cost of effective ingredients.
    • To establish optimal parameters for extraction time and solvent volume.
    • To develop a multi-objective optimization strategy considering cost and yield.

    Main Methods:

    • Box-Behnken experimental design was employed to study the relationship between extraction variables and target outcomes.
    • Key variables included first extraction time, first extraction solution amount, second extraction time, and second extract solution amount.
    • The objective function was defined as the unit cost of target compounds (total ginsenosides or purity), incorporating extraction solution and energy costs.

    Main Results:

    • Optimal process parameters were determined: first extraction time (108.7 min), first extraction solution amount (12-fold), second extraction time (30 min), and second extraction solution amount (8-fold).
    • These parameters were found to effectively minimize the unit cost of extracting ginsenosides.
    • The study demonstrated a significant reduction in unit cost through optimized extraction conditions.

    Conclusions:

    • The developed approach provides an effective method for optimizing industrial red ginseng extraction processes.
    • This optimization strategy can lead to more cost-efficient manufacturing of Chinese medicine.
    • The findings highlight the potential for applying multi-objective optimization in natural product extraction.