In recent years, with the increasing demand for safety and efficacy in the use of traditional Chinese medicine (TCM), TCM processing has been widely studied. Among the various methods, TCM fermentation processing has become a hot research topic due to its unique principles and techniques. TCM fermentation is a process that uses suitable TCM materials to change their original properties and enhance their efficacy based on the characteristics of selected microorganisms there are three main types of fermentation methods: solid-state fermentation, liquid-state fermentation, and dual-direction solid-state fermentation. Currently, the research on the TCM fermentation method has attracted extensive attention from scholars. In the future, further research is needed on the selection of fermentation microorganisms and the mechanism of their action during the fermentation process, in order to open up new avenues for the processing of traditional Chinese medicine. TCM fermentation can enhance the efficacy of TCM and reduce side effects by transforming and enhancing TCM properties through microbial interactions. The use of TCM fermentation has demonstrated efficacy in the treatment of various diseases, such as diabetes, hypertension, and liver damage. TCM fermentation not only enriches the use of TCM materials but also broadens the application of microorganisms in TCM. In conclusion, TCM fermentation processing has become an important research direction in the field of traditional Chinese medicine. Through fermentation, TCM can be transformed and enhanced in order to improve efficacy and reduce side effects, providing a promising new direction for the development and promotion of TCM. Further research is needed to deepen understanding of the selection and mechanism of fermentation microorganisms and to explore their potential uses in TCM.
Fermentation Methods
Solid-state Fermentation
Solid-state fermentation (SSF) is a fermentation method that uses a certain humidity of agricultural and sideline products as the nutrient substrate and one or more fungi as the inoculum under conditions of no free water or extremely low water content. SSF is developed from the traditional koji-making process and has been improved and optimized over time. Examples of SSF include Pinellia ternata koji, Six Gentlemen koji, and Agarwood koji. The fermentation process is simple to operate, and environmental conditions such as temperature, humidity, acidity, and oxygen content are easy to control, making it less susceptible to contamination from foreign bacteria. Thus, the efficacy of medicinal materials can be fully realized. Recent studies have shown that the key to successful SSF of TCM lies in the cultivation of dominant strains, with high yield, high transformation efficiency, and low toxicity being the ideal selection criteria for strains.
Liquid-state Fermentation
Liquid-state fermentation (LSF) is a modern fermentation technology that relies on the production process of antibiotics. Healthy fungal mycelia are inoculated into a culture medium containing a certain proportion of TCM, which is then fermented under suitable environmental conditions. This fermentation method has made a breakthrough over SSF and is therefore more widely used. However, because most TCM is easily contaminated during the fermentation process, the requirements for production equipment are more strict. In addition, deep-layered solid-state fermentation is widely used in the study and large-scale production of Monascus purpureus for red yeast rice.
Dual-directional Solid-state Fermentation
Dual-directional solid-state fermentation (DSF) was first used by Prof. Zhuang Yi of Nanjing University of Traditional Chinese Medicine in the 1980s. This technique is based on SSF but differs in that the nutrient substrate for fungal growth is changed to TCM materials or residues. This allows the TCM materials to provide nutrient substances for the fungus, while their structural components are influenced by the metabolic products or cytokines of the fungus, thus giving the TCM materials functional properties and flavors different from their original ones, making them dual-directional. Zhu Zhou and others used SSF to study the effects of Pinellia ternata with white Hypomyces. Their results showed that Pinellia ternata processed with white Hypomyces under specific conditions had reduced toxicity but increased anticonvulsive effect compared to other methods. Therefore, white Hypomyces have a detoxification and enhancing effect on Pinellia ternata in SSF. In summary, the fermentation methods used in TCM are constantly evolving in order to improve the efficacy and reduce the toxicity of medicinal materials. The selection of dominant strains is crucial in SSF, while equipment requirements are more stringent for LSF. DSF is a promising technique that has the potential to open up new possibilities in the processing of TCM.
Role of Fermentation in Traditional Chinese Medicine Processing Enhancing Medicinal Efficacy
Fermentation during the processing of traditional Chinese medicine (TCM) uses microorganisms and TCM as co-substrates. During this process, the secondary metabolites produced by microorganisms during fermentation synergize with medicinal components, enhancing the medicinal effects. This is because the interaction of secondary metabolites and medicinal components widens metabolic pathways, leading to the production of different types of active ingredients. The active ingredients of TCM are usually embedded in the cell walls, which are dense and hard, creating a barrier to the effective extraction and absorption of the active ingredients. Microorganisms play a role in extracting active ingredients by producing various extracellular enzymes that break down the tight structure of the cell walls, increasing the space between cells, and providing pathways for the diffusion of substances inside and outside cells. This leads to an increase in the extraction efficiency and utilization rate of active ingredients.
Fermentation of TCMs can reduce their toxicity or irritating effects because microorganisms can alter the structure of toxic components, transforming them into less or even non-toxic substances. Ganoderma and Hypomyces Blancii fermented Croton seeds (producing Ganoderma Crotoni and Blancii Crotoni, respectively) had obvious detoxification effects, which were better than the traditional fermentation products. Changing the Active Ingredients Fermentation can generate new ingredients and transform existing active ingredients. During the fermentation process, under the action of enzymes, the macromolecular components of the microbial metabolic process are broken down and transformed, synthesizing new compounds under specific conditions, and leading to the production of more effective active ingredients.
HSF Biotech specializes in the production of fermented herbal medicines, which offer a range of advantages and benefits over traditional, non-fermented herbal products. HSF is committed to using the latest scientific advancements and traditional knowledge to create high-quality fermented herbal products that deliver superior health benefits to our customers. We believe that our products will lead the new wave of the herbal industry, and we are dedicated to providing innovative solutions that contribute to the health and well-being of people around the world.
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