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Application of plant-based antimicrobials for the growth inhibition of clostridia in pressed beet pulp silage.
- Source :
-
Journal of the science of food and agriculture [J Sci Food Agric] 2011 Aug 30; Vol. 91 (11), pp. 2038-44. Date of Electronic Publication: 2011 Apr 14. - Publication Year :
- 2011
-
Abstract
- Background: In this study the inhibition of hop beta acids on the growth of clostridia in soil-contaminated pressed sugar beet pulp silages was investigated. Hop beta acids are natural substances which display their effect at low concentrations. Fresh pressed beet pulp material was mixed with soil to artificially contaminate it with clostridia. Laboratory silos were filled with the substrate, stored at 25 °C and opened for sampling at 0, 2, 8, 15, 30, 60, and 90 days. The impact on clostridial growth during silage fermentation was monitored by determination of the pH value and dry matter content, as well as chemical analysis of the fermentation products. Throughout the experiments, the effect of a commercial silage inoculant based on lactic acid bacteria (LAB) and hop-resistant LAB were examined with and without the combination of plant-based antimicrobials.<br />Results: Results indicate that in contaminated silage samples without any additives high butyric acid contents occurred due to clostridial growth. This spoilage could not be suppressed by the application of LAB, whereas the combined application of LAB and hop beta acids significantly improved silage quality, which was reflected by favourable organic acid composition (P < 0.05).<br />Conclusion: The experimental data indicate that the application of hop beta acids improves the preservation effect of LAB in suppressing clostridial growth in silages and thus demonstrates some potential for the combined use of plant-based antimicrobials and LAB.<br /> (Copyright © 2011 Society of Chemical Industry.)
- Subjects :
- Anti-Infective Agents analysis
Anti-Infective Agents chemistry
Antibiosis drug effects
Carboxylic Acids analysis
Carboxylic Acids metabolism
Clostridium growth & development
Clostridium metabolism
Colony Count, Microbial
Fermentation
Food-Processing Industry economics
Foodborne Diseases prevention & control
Foodborne Diseases veterinary
Humulus chemistry
Hydrogen-Ion Concentration
Industrial Waste analysis
Industrial Waste economics
Lactobacillales metabolism
Resins, Plant chemistry
Resins, Plant pharmacology
Silage analysis
Soil Microbiology
Terpenes analysis
Terpenes pharmacology
Time Factors
Anti-Infective Agents pharmacology
Beta vulgaris microbiology
Clostridium drug effects
Food Preservation methods
Plant Roots microbiology
Silage microbiology
Subjects
Details
- Language :
- English
- ISSN :
- 1097-0010
- Volume :
- 91
- Issue :
- 11
- Database :
- MEDLINE
- Journal :
- Journal of the science of food and agriculture
- Publication Type :
- Academic Journal
- Accession number :
- 21495041
- Full Text :
- https://doi.org/10.1002/jsfa.4416