Metabolic Variations in Bamboo Shoot Boiled Liquid During Pediococcus pentosaceus B49 Fermentation

Area of Science:

• Food Science and Technology
• Microbiology
• Metabolomics

Background:

• Bamboo shoot boiled liquid (BSBL) is a nutrient-rich byproduct often discarded, leading to waste.
• Fermentation offers a sustainable method to valorize BSBL, transforming its biochemical composition.
• Understanding metabolic changes during fermentation is key to developing functional food products.

Purpose of the Study:

• To analyze the metabolic profile changes in BSBL during fermentation with Pediococcus pentosaceus B49.
• To identify key metabolites and metabolic pathways affected by the fermentation process.
• To provide insights for the development of functional fermented bamboo products.

Main Methods:

• Partial Least Squares Discriminant Analysis (PLS-DA) was used to compare metabolite profiles at different fermentation time points (0-96 h).
• Metabolite signal intensities were quantified and compared between unfermented and fermented BSBL.
• KEGG enrichment analysis was performed to identify significantly impacted metabolic pathways.

Main Results:

• Significant metabolite profile differences were observed, with major changes occurring within the first 24 hours.
• Fermentation increased levels of 5,7-dimethoxyflavone, cinnamic acid, and other phenolic compounds.
• Bitter peptides (e.g., alanylisoleucine) were significantly reduced, while tyrosine and arginine/proline metabolism pathways were impacted.

Conclusions:

• Pediococcus pentosaceus B49 fermentation effectively modifies the BSBL metabolome.
• The fermentation process reduces bitterness and enhances potentially beneficial compounds in BSBL.
• These findings support the potential of BSBL fermentation for creating novel functional foods.