Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Death of fecal coliforms and mycobacterium paratuberculosis during fermentation of corn and feedlot waste
AbstractA continuous, solid-substrate fermentation of cracked corn grain mixed with the liquid phase of feedlot waste creates an acid environment (pH 4·1–4·4) hostile to many microorganisms. A fecal coliform bacterium isolated from beef cattle waste and Mycobacterium paratuberculosis were killed rapidly after massive numbers of each were added to this fermentation. Approximately one-third of the fecal coliform population (ca. 6 × 109 cells per g fermenting material) were killed within 30 min of addition and 99% were destroyed within 2 h. Destruction of the mycobacterium was slower, but less than 50% of the initial 4 × 107 coloy-forming units (ca cells per cfu) survived for more than 4 h. Total destruction of both organisms occurred within 9 h. No cells of the introduced organisms with a total retention time of 108 h, and none occurred in the output product. The process appears to be one that can eliminate enteric bacterial pathogens and mycobacteria from beef cattle waste recycled as feedstuff.
Death of fecal coliforms and mycobacterium paratuberculosis during fermentation of corn and feedlot waste
AbstractA continuous, solid-substrate fermentation of cracked corn grain mixed with the liquid phase of feedlot waste creates an acid environment (pH 4·1–4·4) hostile to many microorganisms. A fecal coliform bacterium isolated from beef cattle waste and Mycobacterium paratuberculosis were killed rapidly after massive numbers of each were added to this fermentation. Approximately one-third of the fecal coliform population (ca. 6 × 109 cells per g fermenting material) were killed within 30 min of addition and 99% were destroyed within 2 h. Destruction of the mycobacterium was slower, but less than 50% of the initial 4 × 107 coloy-forming units (ca cells per cfu) survived for more than 4 h. Total destruction of both organisms occurred within 9 h. No cells of the introduced organisms with a total retention time of 108 h, and none occurred in the output product. The process appears to be one that can eliminate enteric bacterial pathogens and mycobacteria from beef cattle waste recycled as feedstuff.
Death of fecal coliforms and mycobacterium paratuberculosis during fermentation of corn and feedlot waste
Hrubant, G.R. (Autor:in) / Rhodes, R.A. (Autor:in)
Biological Wastes ; 29 ; 139-152
29.12.1988
14 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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