Modification of alternan by novel Penicillium spp |
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Authors: | Leathers T D Nunnally M S Côté G L |
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Institution: | (1) Fermentation Biotechnology Research Unit, National Center for Agricultural Utilization Research, Agricultural Research Service, US Department of Agriculture, 1815 North University Street, Peoria, IL 61604, USA, US |
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Abstract: | Four strains identified as Penicillium spp. were isolated from soil samples based on their capacity to modify the unique polysaccharide, alternan. Spores from these
isolates germinated in medium containing alternan and reduced the apparent molecular weight of alternan as determined by high-performance
size exclusion chromatography and viscometry. However, the fungi exhibited limited growth on alternan and did not consume
the substrate. The rheological properties of the modified alternan resembled those of commercial gum arabic. Thus, treatment
of native alternan with spores from these Penicillium spp. strains constitutes a simple bioconversion method to quantitatively produce novel and potentially useful modified alternan.
Journal of Industrial Microbiology & Biotechnology (2002) 29, 177–180 doi:10.1038/sj.jim.7000272
Received 14 February 2002/ Accepted in revised form 13 May 2002 |
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Keywords: | : alternan bioconversion gum arabic modification Penicillium |
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