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Optimization and scale-up of extracellular β-glucan production by ophiocordyceps dipterigena bcc 2073 in low-cost media
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Document Title
Optimization and scale-up of extracellular β-glucan production by ophiocordyceps dipterigena bcc 2073 in low-cost media
Author
Prathumpai W., Rachtawee P., Khajeeram S., Nakorn P.N.
Name from Authors Collection
Affiliations
Bioresources Technology Unit, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, 113 Thailand Science Park, Klong Nueng, Klong Luang, Pathum Thani, 12120, Thailand; Department of Biotechnology, Faculty of Science and Technology, Thammasat University, Klong Nueng, Klong Luang, Pathum Thani, 12120, Thailand
Type
Article
Source Title
Journal of Pure and Applied Microbiology
ISSN
09737510
Year
2017
Volume
11
Issue
1
Page
51-62
Open Access
All Open Access, Bronze
Publisher
Journal of Pure and Applied Microbiology
DOI
10.22207/JPAM.11.1.08
Format
Abstract
The optimization of β-glucan production by Ophiocordyceps dipterigena BCC 2073 was carried out. For the three-step optimization performed in 250-mL Erlenmeyer flasks, at the first step, the maximum β-glucan production of 16.48±0.60 g/L was obtained using molasses and malt extract. During the second step, we sought to find an alternative carbon source; the highest β-glucan production of 16.96±1.33 g/L was obtained using yeast extract and hydrolyzed cassava starch. The third step involved the optimization of nitrogen sources, and the highest β-glucan content (18.16±0.15 g/L) was obtained with yeast extract. To reduce the use of yeast extract for β-glucan production, a fractional factorial design at 2 levels was applied after the three-step optimization to reduce the concentration of yeast extract by combination with other suitable inorganic nitrogen sources. The medium consisting of 2.5 g/L yeast extract as a sole nitrogen source yielded 24.65±2.21 g/L β-glucan production. At the last step of optimization, the highest β-glucan production of 35.77±3.01 g/L was obtained in the medium consisting of 68.8 g/L hydrolyzed cassava starch, 2.62 g/L molasses and 2.5 g/L yeast extract using central composite design. The evaluation of b-glucan production was carried out in a 5-L bioreactor, and 76.87±0.96 g/L of material was obtained.
Industrial Classification
Knowledge Taxonomy Level 1
Knowledge Taxonomy Level 2
Knowledge Taxonomy Level 3
License
N/A
Rights
N/A
Publication Source
Scopus