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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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Original Research Articles                      Volume : 15, Issue:1, January, 2026

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com /
submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2026.15(1): 40-47
DOI: https://doi.org/10.20546/ijcmas.2026.1501.004


Biocatalytic Ability of the Hairy Bracket Mushroom (Trametes hirsuta):  Bio-reduction of Carbonyl Compounds
Kohji Ishihara1*, Noriyoshi Masuoka2, Hiroki Hamada3 and Kei Shimoda4
1Department of Biological Science, Faculty of Science and Engineering, Yasuda Women's University, Hiroshima, Japan 2Tsudaka-Fruit Juice Laboratory, Okayama Research-park Incubation Center (ORIC), Okayama, Japan 3Department of Research and Development, Meister Bio Co. Ltd., Okayama, Japan 4Department of Biomedical Chemistry, Faculty of Medicine, Oita University, Oita, Japan
*Corresponding author
Abstract:

This study screened the potential biocatalytic abilities of four hairy bracket mushroom (Trametes strains) strains. Commercially available potato dextrose broth (PDB) and a medium recommended by the Fungus/Mushroom Resource and Research Center (MA medium) were used for culturing these mushrooms. Good growth was observed in two strains –TUFC13731 and 31398– cultured using the PDB. The stereoselective reduction of α- and β-keto esters by these strains was investigated, and they were found to reduce various α-keto esters. Specifically, the reduction of α-keto esters by the PDB-cultivated T. hirsuta TUFC13731 strain in the presence of L-glutamate as an additive yielded the corresponding α-hydroxy esters with a high conversion ratio and excellent enantioselectivity. Furthermore, this strain stereospecifically reduced ethyl 2-methyl-3-oxobutanoate to (2S, 3S)-2-methyl-3-hydroxybutanoate, i.e., only one of the four theoretically possible isomers. Overall, hairy bracket mushrooms demonstrated great potential for application as biocatalysts for the stereoselective reduction of carbonyl compounds. The present study results also suggest that cryopreserved T. hirsuta cells can be used as biocatalysts for the asymmetric reduction of carbonyl compounds.


Keywords: Biocatalyst; Stereoselective reduction; Chiral alcohol;Trametes hirsuta;           Cryopreserved cells


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How to cite this article:

Kohji Ishihara, Noriyoshi Masuoka, Hiroki Hamada, and Kei Shimoda. 2026. Biocatalytic Ability of the Hairy Bracket Mushroom (Trametes hirsuta):  Bio-reduction of Carbonyl Compounds.Int.J.Curr.Microbiol.App.Sci. 15(1): 40-47. doi: https://doi.org/10.20546/ijcmas.2026.1501.004
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