AEM
Home Help [Feedback] [For Subscribers] [Archive] [Search] [Contents]
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrowReprints and Permissions
Right arrow Copyright Information
Right arrow Books from ASM Press
Right arrow MicrobeWorld
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Stevens, C. A.
Right arrow Articles by Gregory, K. F.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Stevens, C. A.
Right arrow Articles by Gregory, K. F.
Agricola
Right arrow Articles by Stevens, C. A.
Right arrow Articles by Gregory, K. F.

 Previous Article  |  Next Article 

Appl Environ Microbiol. 1987 February; 53(2): 284-291
Copyright © 1987, American Society for Microbiology. All Rights Reserved.

Production of Microbial Biomass Protein from Potato Processing Wastes by Cephalosporium eichhorniae

Coleen A. Stevens and Kenneth F. Gregory*

Department of Microbiology, University of Guelph, Guelph, Ontario NIG 2W1, Canada

ABSTRACT

The use of Cephalosporium eichhorniae 152 (ATCC 38255) (reclassified as Acremonium alabamense; see Addendum in Proof), a thermophilic, acidophilic, amylolytic fungus, for the conversion of potato processing wastes into microbial protein for use as animal feed was studied. The fungus was not inhibited by {alpha}-solanine or ß-2-chaconine, antimicrobial compounds in potatoes, or by morpholine or cyclohexylamine (additives to steam used in the peeling process) at levels likely to be encountered in this substrate. Mixed effluent from holding tanks at a potato-processing plant contained about 109 bacteria per ml and inhibited fungal growth. The fungus grew well on fresh potato wastes containing up to 5% total carbohydrate and utilized both starch and protein at 45°C and pH 3.75. On potato homogenate medium containing 2% carbohydrate (about 14% fresh potato) supplemented with monoammonium phosphate (0.506 g/liter) and ferric iron (0.1 g/liter), with pH control (at 3.75) and additional nitrogen supplied by the automatic addition of ammonium hydroxide, typical yields were 0.61 g (dry weight) of product and 0.3 g of crude protein per g of carbohydrate supplied. An aerobic, spore-forming bacterium, related to Bacillus brevis, commonly contaminated nonsterilized batch cultures but was destroyed by heating for 15 min at 100°C.

FOOTNOTES

* Corresponding author.

Appl Environ Microbiol. 1987 February; 53(2): 284-291
Copyright © 1987, American Society for Microbiology. All Rights Reserved.





Home Help [Feedback] [For Subscribers] [Archive] [Search] [Contents]
J. Bacteriol. Microbiol. Mol. Biol. Rev. Eukaryot. Cell All ASM Journals

Copyright © 1987 by the American Society for Microbiology. All rights reserved.