Date Received: 14-04-2025
Date Accepted: 07-07-2026
Date Published: 27-08-2026
##submissions.doi##: https://doi.org/10.31817/tckhnnvn.2026.24.8.10
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Utilization of Okara as a Substrate for Cultivating Lingzhi Mushroom Ganoderma lucidum GA2
Keywords
Bioactive compounds, polysacharides, polyphenols, antioxidant capacity
Abstract
Soybean residue is a nutrient-rich by-product of the soy milk industry, offering high potential as a sustainable supplement in mushroom cultivation. This study investigated the effects of incorporating soybean residue as a partial replacement for wheat bran in the substrate of Ganoderma lucidum GA2. Substrates were formulated with 1%, 3%, and 5% soybean residue. The results showed that mycelial growth and fruiting body formation remained comparable to the control at all supplementation levels. The supplementation of 3% soybean residue significantly increased polysaccharide content (34.91 mg/g DW), total polyphenols (8.81 mgGAE/g DW), and antioxidant activity (14.87 mgTE/g DW). These findings highlight soybean residue as a promising alternative to conventional materials, improving the medicinal properties of G. lucidum by increasing its bioactive compounds, and contributing to by-product valorization.
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