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Nutritional Value and Proteases of Lentinus citrinus Produced by Solid State Fermentation of Lignocellulosic Waste from Tropical Region

Summary

This research explored growing edible mushrooms (Lentinus citrinus) on agricultural waste products while studying their nutritional value and enzyme production. The study found these mushrooms are highly nutritious and can effectively convert waste materials into valuable food and enzyme products. Impacts on everyday life: – Provides a sustainable way to convert agricultural waste into nutritious food – Offers a new source of protein-rich, low-fat food options – Creates potential new industrial enzymes for various applications – Demonstrates environmentally friendly waste management – Could help reduce food costs through efficient resource utilization

Background

Edible mushrooms are considered healthy foods rich in protein, dietary fiber, and reduced fat content with broad bioactivity that enables their inclusion in human diet. The genus Lentinus, represented by around 63 species, is known as a saprobe cosmopolitan basidiomycete occurring in tropical and temperate areas. Many of these macrofungi have distinct flavor and nutritional properties including high amounts of protein, fibers, minerals, vitamins and reduced lipid content.

Objective

This study aimed to examine the growth and yield performance of Lentinus citrinus on cupuaçu exocarp mixed with either litter or rice bran to investigate the nutritional composition and proteolytic potential of the fruiting body produced.

Results

In CE + LI substrate, biological efficiency was 93.5% with higher content of fat (4.5%), fiber (11.0%), protein (27.0%) and amino acids compared to CE + RB. The CE + RB substrate showed 84.2% biological efficiency with higher carbohydrates (53.59%), energy (324.33 kcal) and minerals. Protease activity was significant in CE + LI (463.55 U/mL) with optimal activity at 50°C in neutral and alkaline pH and maximum stability at 30°C at alkaline pH.

Conclusion

The study demonstrated that cupuaçu exocarp combined with either litter or rice bran can be effectively used as alternative substrates for L. citrinus cultivation and protease production. The mushrooms produced have significant nutritional value for human consumption due to high protein, essential amino acids and fiber content. The proteases extracted showed potential for industrial applications.
  • Published in:Saudi Journal of Biological Sciences,
  • Study Type:Laboratory Research,
  • Source: 10.1016/j.sjbs.2015.07.002
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