From waste to resource: Sustainable reuse of spent shiitake mushroom substrate in subsequent production cycles

IF 4.1 2区环境科学与生态学 Q2 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

International Biodeterioration & Biodegradation Pub Date : 2025-02-27 DOI:10.1016/j.ibiod.2025.106034

Wagner Gonçalves Vieira Junior , Cinthia Elen Cardoso Caitano , Lucas da Silva Alves , Pedro Afonso Gomes Teixeira , Ralph Noble , José Emilio Pardo , Diego Cunha Zied

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Abstract

The valorization of agricultural waste a substrate in mushroom cultivation promotes a circular economy and environmental sustainability. However, after food producing, a byproduct spent mushroom substrate (SMS) is generated. Reusing SMS in new mushroom production cycles presents an opportunity for recycling and cost reduction. This study aimed to utilize SMS from shiitake (Lentinula edodes) cultivation in subsequent cycles while reducing the bran concentration in the substrate. Three cultivation cycles were conducted using two initial substrates (high-N and low-N). SMS was added at 5, 10, and 20% w/w, along with a control formulation without SMS. Results indicated that reducing bran in the low-N substrate decreased shiitake yields, regardless of SMS addition. SMS was effective in the third cycle, particularly for the high-N substrate with 5 or 10% SMS. The effectiveness of replacing bran with SMS depended on nutrient availability, especially nitrogen. Further studies should explore the economic feasibility, energy consumption, emissions, and carbon sequestration associated with this technology.

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从废物到资源：在随后的生产周期中对废香菇基质的可持续再利用

农业废弃物作为菌类栽培基质的价值增值促进了循环经济和环境可持续性。然而，在食物生产之后，会产生一种副产品——废蘑菇基质（SMS）。在新的蘑菇生产周期中重用SMS提供了回收和降低成本的机会。本研究旨在在后续循环中利用香菇（Lentinula edodes）培养的SMS，同时降低基质中麸皮的浓度。采用两种初始基质（高氮和低氮）进行3个培养周期。在5%、10%和20% w/w的情况下添加SMS，以及不添加SMS的对照配方。结果表明，在低氮基质中，无论添加多少SMS，减少麸皮都会降低香菇产量。SMS在第三个循环中是有效的，特别是在高氮基质中添加5%或10%的SMS。SMS替代麸皮的有效性取决于养分利用率，尤其是氮的利用率。进一步的研究应探讨与该技术相关的经济可行性、能源消耗、排放和碳固存。

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来源期刊

International Biodeterioration & Biodegradation 生物-环境科学

CiteScore

9.60

自引率

10.40%

发文量

107

审稿时长

21 days

期刊介绍： International Biodeterioration and Biodegradation publishes original research papers and reviews on the biological causes of deterioration or degradation.