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Differential Response of Oyster Shell Powder on Enzyme Profile and Nutritional Value of Oyster Mushroom Pleurotus florida PF05

Summary

This research explored using ground oyster shells as a supplement to improve oyster mushroom cultivation. The study found that adding small amounts of oyster shell powder to the growing medium enhanced mushroom growth, yield, and nutritional content. This has practical implications for sustainable agriculture and food production. Impacts on everyday life: • Provides a way to recycle waste oyster shells into valuable agricultural supplements • Helps produce more nutritious mushrooms for consumers • Offers mushroom farmers an affordable way to improve their yields • Demonstrates sustainable practices by converting waste into useful products • Could help make mushroom cultivation more economically viable for small-scale farmers

Background

Oyster mushrooms are edible fungi with important medicinal, biotechnological and environmental applications. They are the second largest produced mushrooms globally due to their versatility and ease of cultivation. The natural lignocellulosic substrates used for cultivation often lack proper nutrients which affects different phases of mushroom growth. Various additives are used as supplements to enhance yield, but farmers seek cost-effective alternatives that provide better quality and higher yields.

Objective

To evaluate the influence of powdered oyster shells as a supplement to maximize mycelial growth rate, fruit body yield, biological efficiency, nutrients, and enzyme profiles of oyster mushroom Pleurotus florida PF05.

Results

The mycelium showed fastest growth rate (8.91 mmd−1) in WS + OSP (97 + 3) combination. Maximum laccase (3.133 U/g) and Mn peroxidase activities (0.091 U/g) were observed in WS + OSP (92 + 8). The highest biological efficiency (147%) was achieved with WS + OSP (97 + 3) combination. Protein, lipid and carbohydrate contents in fruit bodies improved with OSP supplementation, with highest values of 31.3μg/g, 0.373 g/g, and 0.0639 g/g respectively.

Conclusion

Lower concentrations of oyster shell powder acted positively compared to higher concentrations and improved both yield and nutritional values of mushroom. OSP supplementation at lower levels can effectively enhance enzyme production and mushroom productivity while improving nutrient content of fruit bodies.
  • Published in:BioMed Research International,
  • Study Type:Experimental Research,
  • Source: 10.1155/2014/386265
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