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Optimization of biomass production with enhanced glucan and dietary fibres content by Pleurotus ostreatus ATHUM 4438 under submerged culture
National Technical University of Athens.
National Technical University of Athens.
National and Kapodistrian University of Athens.
National and Kapodistrian University of Athens.
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2010 (English)In: Biochemical engineering journal, ISSN 1369-703X, E-ISSN 1873-295X, Vol. 50, no 3, p. 131-138Article in journal (Refereed) Published
Abstract [en]

This work was aimed at optimizing biomass production by the edible basidiomycete Pleurotus ostreatus ATHUM 4438 in a submerged process with enhanced glucan and dietary fibres content. β-Glucan from Pleurotus sp. (pleuran) has been used as food supplements due to its immunosuppressive activity. Like other dietary fibre components, oyster mushroom polysaccharides can stimulate the growth of colon microorganisms (probiotics), i.e. act as prebiotics. We used the FF MicroPlate for substrate utilization and growth monitoring. The pattern of substrate catabolism forms a substrate assimilation fingerprint which is useful in selecting media components for media optimization of maximum biomass production. Different carbon sources (95) were used and then 8 of them were tested in shake flask cultures. The effect of various organic and complex nitrogen sources on biomass production was also examined and response surface methodology based on central composite design was applied to explore the optimal medium composition. When the optimized culture medium was tested in a 20-L stirred tank bioreactor, using 57 g L−1 xylose and 37 g L−1 corn steep liquor, high yields (39.2 g L−1) of dry biomass was obtained. The yield coefficients for total glucan and dietary fibres on mycelial biomass formed were 140 ± 4 and 625 ± 9 mg g−1 mycelium dry weight, respectively.

Place, publisher, year, edition, pages
2010. Vol. 50, no 3, p. 131-138
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URN: urn:nbn:se:ltu:diva-5872DOI: 10.1016/j.bej.2010.04.008Local ID: 410f93ab-fb67-4742-88c0-5c33efd4192fOAI: oai:DiVA.org:ltu-5872DiVA, id: diva2:978748
Note
Upprättat; 2010; 20130221 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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