Abstract
d-Mannitol belongs to a linear polyol with six-carbon and has indispensable usage in medicine and industry. In order to obtain more efficient d-mannitol producer, this study has screened out a stable mutant Penicillium sp. T2-M10 that was isolated from the initial d-mannitol-produced strain Penicillium sp.T2-8 via UV irradiation as well as nitrosoguanidine (NTG) induction. The mutant had a considerable enhancement in yield of d-mannitol based on optimizing fermentation. The production condition was optimized as the PDB medium with 24 g/L glucose for 9 days. The results showed that the production of d-mannitol from the mutant strain T2-M10 increased 125% in contrast with the parental strain. Meanwhile, the fact that d-mannitol is the main product in the mutant simplified the process of purification. Our finding revealed the potential value of the mutant strain Penicillium sp. T2-M10 to be a d-mannitol-producing strain.
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Funding
This work was financially supported by grants from the National Natural Science Foundation of China (No. 81460536 and 81603005), a project of Yunling Scholars of Yunnan province, a grant from the Science and Technology Project of Yunnan Provincial Department of Science and Technology (No. 2017FD059), and a grant from the Scientific Research Foundation of Yunnan Provincial Department of Education (No. 2016zzx003).
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Duan, R., Li, H., Li, H. et al. Enhancing the Production of d-Mannitol by an Artificial Mutant of Penicillium sp. T2-M10. Appl Biochem Biotechnol 186, 990–998 (2018). https://doi.org/10.1007/s12010-018-2791-6
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DOI: https://doi.org/10.1007/s12010-018-2791-6