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Microbial community variation enhances active compound composition in Salvia miltiorrhiza
Zhi Lin Chen1, Hong Zhi Du1, Jian Ke Wang1
1School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang, 550025, People's Republic of China.
Summary
Post-harvest sweating of Salvia miltiorrhiza significantly alters its metabolite profile, increasing beneficial quinones and phenolic acids. This process also enhances microbial diversity, promoting beneficial bacteria and improving the medicinal plant's quality.
Area of Science:
- Plant metabolomics
- Microbial ecology
- Medicinal plant processing
Background:
- Salvia miltiorrhiza is a valuable medicinal herb.
- Post-harvest sweating is a common processing method.
- Metabolic and microbial impacts of sweating are not well understood.
Purpose of the Study:
- Investigate the effects of sweating on S. miltiorrhiza metabolite profiles.
- Analyze changes in associated bacterial communities during sweating.
- Identify key metabolic and microbial shifts induced by sweating.
Main Methods:
- Widely targeted metabolomics to compare metabolite composition.
- High-throughput sequencing to analyze bacterial community variations.
- Correlation analysis between metabolites and microbial communities.
Main Results:
- Identified 435 differentially present metabolites, including quinones, phenolic acids, and lipids.
- Sweating significantly increased microbial diversity and richness.
- Established a correlation between quinone/phenolic acid accumulation and bacterial community shifts.
- Observed enhanced levels of key metabolites promoting beneficial microorganisms.
Conclusions:
- Sweating alters S. miltiorrhiza's metabolite profile and associated bacterial communities.
- The process leads to increased accumulation of bioactive compounds.
- Distinct bacterial populations at different sweating stages contribute to unique quality traits.
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