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Commensalism during submerged mixed culture of Geotrichum candidum and Penicillium camembertii on glutamate and lactate

Paper ID Volume ID Publish Year Pages File Format Full-Text
35941 45115 2006 6 PDF Available
Title
Commensalism during submerged mixed culture of Geotrichum candidum and Penicillium camembertii on glutamate and lactate
Abstract

Geotrichum candidum and Penicillium camembertii were cultivated in pure and mixed cultures on glutamate- and lactate-based medium. In pure culture, P. camembertii assimilated simultaneously glutamate, as a nitrogen and carbon source for biosynthesis, and lactate as an energy source. On the contrary, G. candidum grew on glutamate alone. The mixed culture led to higher growth rates and then higher rates of substrate consumption and metabolite production than each pure culture; however, the behaviour recorded was similar to that observed during G. candidum pure culture, in particular the absence of lactate assimilation during growth, illustrating a commensalism between both species. The presence of G. candidum induced a form of “competition” and then a better assimilation by P. camembertii of the sole nitrogen source, glutamate, which was therefore used as an energy source in addition to be a carbon (and nitrogen) source. Lactate was only used for energy supply during stationary state, as also recorded during G. candidum pure culture.

Keywords
Geotrichum candidum; Penicillium camembertii; Interactions; Mixed cultures; Substrates consumption
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Commensalism during submerged mixed culture of Geotrichum candidum and Penicillium camembertii on glutamate and lactate
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 41, Issue 12, December 2006, Pages 2452–2457
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
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Price was $35.95
You save - $31
Price after discount Only $4.95
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Any Questions? feel free to contact us