Comparison of Chemical Property and In Vitro Digestion Behavior of Polysaccharides from Auricularia polytricha Mycelium and Fruit Body
- Author: mycolabadmin
- 2023-01-07
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Summary
This research compared polysaccharides extracted from mushroom mycelium versus traditional mushroom fruit bodies, showing that lab-grown mycelium could provide similar beneficial compounds. This has important implications for sustainable production of medicinal mushroom compounds.
Impacts on everyday life:
• More sustainable and cost-effective production of beneficial mushroom compounds
• Potential for new nutritional supplements derived from mushroom mycelium
• Reduced environmental impact compared to traditional mushroom cultivation
• Improved understanding of how mushroom compounds are digested
• Validation of mycelium as an alternative source of antioxidants
Background
Auricularia polytricha is an edible mushroom with a long history of use in East Asian cuisine and medicine. It contains bioactive polysaccharides with antioxidant, anti-tumor and immune-regulating properties. While the fruit body is traditionally used, its cultivation has limitations including high costs, low yields, and environmental concerns. Mycelial fermentation offers potential advantages but requires comparison of bioactive properties.
Objective
This study aimed to systematically compare the structural characteristics and antioxidant activities of polysaccharides extracted from A. polytricha mycelium (IAPs) versus fruit body (ABPs), and evaluate their behavior during simulated digestion.
Results
IAPs and ABPs showed similar functional groups but differed in molecular weight distribution and microstructure. IAPs exhibited broader molecular weight distribution (3.22 × 104 Da and 1.95 × 106 Da) compared to ABPs (5.4 × 106 Da). Both polysaccharides demonstrated good antioxidant activity, with IAPs showing slightly higher activity. Neither polysaccharide was degraded during simulated digestion and both maintained antioxidant properties throughout the digestive process.
Conclusion
The study demonstrated that mycelial polysaccharides (IAPs) have comparable structural and functional properties to fruit body polysaccharides (ABPs), suggesting their potential as an equivalent alternative. Both polysaccharides resist digestion in simulated gastrointestinal conditions while maintaining their antioxidant activities.
- Published in:Food Chemistry: X,
- Study Type:Laboratory Research,
- Source: 10.1016/j.fochx.2023.100570