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Microbial protein production by Paecilomyces variotii cultivated in eucalyptus hemicellulosic hydrolyzate

, : Microbial protein production by Paecilomyces variotii cultivated in eucalyptus hemicellulosic hydrolyzate. Bioresource Technology 52(2): 197-200

The eucalyptus hemicellulose fraction was hydrolyzed by treating eucalyptus wood chips with 1.2% (w/v) sulfuric acid (wood to acid ratio of 1:3) at 150 degree C for 120 min. The hydrolyzate was used as substrate to grow Paecilomyces variotii IOC-3764 in a 7-l fermenter at 30 degree C; air 1.5 vvm; stirring 400 rpm. The kinetic parameters measured included maximum growth rate (mu-max 0.10/h), yield (Y-x/s 0.44 g/g), and productivity (Q-x 0.26 g/l cntdot h). The protein produced (34% of the biomass) contained all essential amino acids for animal feed.


DOI: 10.1016/0960-8524(95)00029-e

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