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Production of Mycelial Biomass by the Amazonian Edible Mushroom Pleurotus albidus

Summary

This research focused on finding the best way to grow an edible Amazonian mushroom called Pleurotus albidus in liquid culture. The scientists discovered optimal conditions for growing the mushroom’s cells, which could lead to more efficient production methods for food purposes. Impact on everyday life: • Could lead to more affordable and sustainable mushroom-based food products • Provides a new method for producing nutritious food ingredients • Helps advance sustainable food production technology • Could increase availability of exotic mushroom varieties in different markets • Contributes to developing new food sources that are both healthy and environmentally friendly

Background

Edible mushroom species are considered a healthy food source due to their high content of protein, fiber, vitamins, and minerals. The Pleurotus genus is known for distinct gastronomic, nutritional, and medicinal properties among commercially available edible mushrooms. While mushrooms typically develop biomass by degrading cellulose and lignin through enzymatic action, they can be cultivated at large scale using both solid state and submerged culture techniques.

Objective

This study aimed to evaluate the growth of mycelial biomass of Pleurotus albidus cultivated in submerged fermentation and investigate the influence of physicochemical parameters of synthetic media on biomass production.

Results

Saccharose, fructose, and maltose were the most effective carbon sources for mycelial biomass formation, yielding 7.28 g/L, 7.07 g/L, and 6.99 g/L respectively. Yeast extract was the optimal nitrogen source, producing 7.98 g/L of biomass. Inorganic nitrogen sources did not stimulate growth effectively. The factorial design showed all variables significantly influenced biomass production, with saccharose concentration having the strongest effect. Maximum mycelial biomass production (9.81 g/L) was achieved with 30.0 g/L saccharose, 2.5 g/L yeast extract, pH 7.0, and 180 rpm agitation.

Conclusion

The study demonstrated that media composition significantly affects P. albidus mycelial biomass production, with carbon source diversification promoting improved growth. The findings provide pioneering data for optimizing P. albidus cultivation through submerged fermentation, which could be valuable for producing mycelial biomass for human consumption.
  • Published in:Brazilian Journal of Microbiology,
  • Study Type:Laboratory Research,
  • Source: 10.1016/j.bjm.2016.04.007
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