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All Journal Journal of Academic Biology and Biology Education
Rasul, Zharifa G.
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Biochemistry, Genetics & Molecular Biology Education Veterinary Other

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Unexpected Insights: Raw Sub-Bituminous Coal Outperforms Gamma-Irradiated Coal in Bio-solubilization with Phanerochaete chrysosporium Sari, Arina Findo; Rasul, Zharifa G.; Sampulna, Jamela B.
Journal of Academic Biology and Biology Education Vol. 2 No. 1 (2025): June
Publisher : Cahaya Ilmu Cendekia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37251/jouabe.v2i1.2152

Abstract

Purpose of the study: The purpose of this study is to investigate the effect of gamma irradiation treatment on sub-bituminous coal in the bio-solubilization process using Phanerochaete chrysosporium and to characterize the bio-solubilization products of raw and irradiated coal under laboratory conditions. Methodology: This study used sub-bituminous coal from South Sumatra, gamma irradiated with an Irpasena irradiator, and biosolubilized with Phanerochaete chrysosporium. Instruments included a Precision® shaker incubator, Novel® microscope, Hanna® pH meter, Shimadzu® GC-MS, and Shimadzu® UV-Vis spectrophotometer. Data were analyzed statistically using T-test with SPSS version 20 software. Main Findings: The results revealed that raw coal exhibited higher solubilization efficiency compared to irradiated coal, indicated by a greater increase in soluble phenolic (0.95 mg/mL) and aromatic compounds (1.42 mg/mL), as well as higher protein production. GC-MS analysis confirmed that raw coal generated more diverse and abundant metabolites, including phenolic and aromatic derivatives, while irradiated coal produced fewer compounds. Statistical analysis (T-test, p < 0.05) supported the significant differences between treatments. These findings suggest that gamma irradiation does not enhance, and may even inhibit, coal bio-solubilization .. Novelty/Originality of this study: This study provides new evidence that gamma irradiation does not enhance, but rather reduces, the bio-solubilization efficiency of sub-bituminous coal by Phanerochaete chrysosporium. The findings challenge the common assumption about irradiation benefits and contribute to advancing knowledge by highlighting the superior performance of raw coal in producing energy-equivalent products.
Co-Authors Sampulna, Jamela B. Sari, Arina Findo