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Nutrient uptake in supplemented substrate by oyster mushroom
Gabriel Lucas de Jesus1, Osmir José Lavoranti2, Gilmar Schafer3
1Crop Science Department, Federal University of Paraná, Curitiba, Paraná, Brazil. ggabriellucas@gmail.com.
World Journal of Microbiology & Biotechnology
|April 28, 2023
Summary
Spent mushroom substrate (SMS) effectively supplements oyster mushroom cultivation, boosting mycelial growth and biological efficiency. Supplementation with 15% SMS significantly enhanced oyster mushroom yield compared to traditional rice bran.
Area of Science:
- Agricultural Science
- Mycology
- Biotechnology
Background:
- Spent mushroom substrate (SMS) offers a sustainable alternative to conventional cereal brans for mushroom cultivation.
- Oyster mushroom (Pleurotus ostreatus) production can be optimized by exploring novel substrate supplements.
Purpose of the Study:
- To evaluate the efficacy of Lentinula edodes' SMS as a supplement for Pleurotus ostreatus cultivation.
- To analyze the nutritional impact of SMS supplementation on oyster mushroom production and yield.
Main Methods:
- Wheat straw-based substrates were supplemented with rice bran (RB) or SMS at varying percentages (0%, 7%, 15%, 30%).
- Nutrient analysis (Ca, K, Mg, Mn, Zn, Cu, Fe) of substrates was performed using atomic absorption spectrophotometry.
- Key cultivation parameters including mycelial growth, colonization time, yield, and biological efficiency were assessed.
Main Results:
- Substrate supplementation, irrespective of the source, enhanced mycelial growth compared to the control.
- A 15% SMS supplementation yielded the highest biological efficiency (107%), significantly outperforming the control (66%).
- SMS supplementation led to greater calcium absorption, while rice bran supplementation increased potassium absorption by the substrate.
Conclusions:
- The mineral composition of the substrate directly influences Pleurotus ostreatus growth and yield.
- Spent mushroom substrate (SMS) shows significant potential as an effective and sustainable alternative to traditional bran supplementation in oyster mushroom cultivation.
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