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Research : Optimization of degradation of winery-derived biomass

 

Winery-derived biomass waste was degraded by Penicillium chrysogenum
under solid state fermentation over 8 days in a H20-supplemented medium. Multivariate
statistical analysis of the gas chromatography-mass spectrometry (GC-MS) data resulted in
the identification of 94 significant metabolites, within 28 different metabolic pathways. The
majority of biomass sugars were utilized by day 4 to yield products such as sugars, fatty
acids, isoprenoids, and armino acids. The fungus was observed to metabolize xylose to
xylitol, an intermediate of ethanol production. However, enzyme inhibition and autolysis
were observed from day 6, indicating 5 days as the optimal time for fermentation. 2
chrysogenum displayed metabolism of pentoses (to alcohols) and degraded tannins and
lignins, properties that are lacking in other biomass-degrading ascomycetes. Rapid
fermentation (3-5 days) may not only increase the pertiose metabolizing efficiency but also
increase the yield of medicinally important metabolites, such as syringate

ISSN : 0021-8561

DOI : 10.1021/acs jaft. 5b04834
Record Number : 20163002542
Publisher : American Chemical Society
Location of publication : Washington
Country of publication : USA

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