Abstract:
:Three strains of Streptococcus bovis, a homolactic bacterium capable of utilizing starch, were evaluated for growth kinetics and ability to decrease the pH of alfalfa silage. A selected strain was evaluated for its competitiveness as an inoculant with Enterococcus faecium, an organism used in inoculants, and for its ability to enhance the effect of a commercial inoculant. Testing was completed over three studies using wilted alfalfa (28 to 34% dry matter) ensiled into laboratory silos. Treatments were control, E. faecium, E. faecium and commercial inoculant, S. bovis, and S. bovis and commercial inoculant. Replicate silos were emptied and analyzed at 0.5, 1, 2, 4, 8, and 40 days for pH, fermentation products, and nitrogen fractions. S. bovis alone lowered the pH quicker and improved silage parameters early in the fermentation compared with E. faecium, the commercial inoculant, and control treatments. When combined with a commercial inoculant, S. bovis lowered pH more quickly than the commercial inoculant alone and E. faecium plus commercial inoculant. At 40 days, S. bovis combination had lower pH and ammonia nitrogen and acetate contents than the E. faecium combination. Starch in the silage was not utilized by S. bovis as had been anticipated. Results indicate that S. bovis was more effective than E. faecium as a silage inoculant and could enhance a commercial inoculant on low-dry-matter alfalfa.
journal_name
Appl Environ Microbioljournal_title
Applied and environmental microbiologyauthors
Jones BA,Muck RE,Ricke SCdoi
10.1128/AEM.57.10.3000-3005.1991subject
Has Abstractpub_date
1991-10-01 00:00:00pages
3000-5issue
10eissn
0099-2240issn
1098-5336journal_volume
57pub_type
杂志文章abstract::Salmonella typhimurium accumulates glutamate in response to osmotic stress. Cells in aerobic exponential growth have an intracellular pool of approximately 125 nmol of glutamate mg of protein-1. When cells were grown in minimal medium with 500 mM NaCl, KCl, or sucrose, 290 to 430 nmol of glutamate was found to accumul...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.60.7.2568-2574.1994
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pub_type: 杂志文章
doi:10.1128/AEM.40.3.507-510.1980
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journal_title:Applied and environmental microbiology
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doi:10.1128/AEM.60.10.3809-3814.1994
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journal_title:Applied and environmental microbiology
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journal_title:Applied and environmental microbiology
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doi:10.1128/AEM.43.1.65-69.1982
更新日期:1982-01-01 00:00:00
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journal_title:Applied and environmental microbiology
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.49.5.1168-1173.1985
更新日期:1985-05-01 00:00:00
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journal_title:Applied and environmental microbiology
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journal_title:Applied and environmental microbiology
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更新日期:2004-08-01 00:00:00