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The key technologies of Ganoderma lucidum liquid spawn preparation and scale expansion

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Abstract

Ganoderma lucidum possesses a variety of valuable pharmacological activities, and it has long been used to prevent and treat various human diseases. Up to now, far too little attention has been paid to the liquid spawn of G. lucidum, and the development of the G. lucidum industry is constrained by them. This work aimed to study the key technologies and scale-up preparation of G. lucidum liquid spawn, to achieve large-scale preparation of liquid spawn and solve the problem of unstable quality of G. lucidum. The plate culture, primary shake flask culture, shake flask preparation, and fermentor preparation of G. lucidum liquid spawn were explored in the process of liquid fermentation. The results showed that plate broth volume significantly affected mycelial growth rate. Biomass in the primary shake flask culture is significantly influenced by the picking position of plate mycelium. An artificial neural network coupled with a genetic algorithm was used for carbon and nitrogen sources concentration optimization to increase biomass and substrate utilization. The optimized parameter combination is as follows: glucose, 14.5 g L−1; yeast extract powder, 8.5 g L−1. Under this condition, the biomass (9.82 g L−1) and biomass on reducing sugar (0.79 g g−1) increased by 18.03% and 27.41% compared to the control, respectively. The metabolic activity of liquid spawn prepared by different fermentation scales was diverse, and the liquid spawn prepared by the fermentor has better activity. Conceivably, the liquid spawn process can more conducive be applied to large-scale industrial production.

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Funding

This work was supported by Agriculture Research System of Shanghai of China ([2022] 9), Project of Shanghai Academy of Agricultural and Sciences Excellent Team (2022A-03), Shanghai Academy of Agricultural Sciences Climbing Project.

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JF and JSZ conceptualized the idea of this study. JG perform the experiments and write the initial draft of the manuscript. YFL and CHT validate the data and provide overall supervision. All authors read and approved the final manuscript.

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Correspondence to Jing-Song Zhang or Jie Feng.

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The authors have no relevant financial or non-financial interests to disclose.

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Guo, J., Liu, YF., Tang, CH. et al. The key technologies of Ganoderma lucidum liquid spawn preparation and scale expansion. World J Microbiol Biotechnol 39, 138 (2023). https://doi.org/10.1007/s11274-023-03581-9

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  • DOI: https://doi.org/10.1007/s11274-023-03581-9

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