Isolation and characterization of an anaerobic ruminal bacterium capable of degrading hydrolyzable tannins
| Autor: | K. E. Nelson, Stephen H. Zinder, P Schofield, Alice N. Pell |
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| Rok vydání: | 1995 |
| Předmět: |
Rumen
Sucrose Hydrolyzable Tannin Cellobiose Biology Applied Microbiology and Biotechnology Bacteria Anaerobic chemistry.chemical_compound Tannic acid Animals Food science Ecology Goats Hydrolysis Streptococcus Fructose Hydrogen-Ion Concentration Biodegradation Environmental chemistry Proanthocyanidin Biochemistry Carbohydrate Metabolism Fermentation Energy source Tannins Research Article Food Science Biotechnology |
| Zdroj: | Applied and Environmental Microbiology. 61:3293-3298 |
| ISSN: | 1098-5336 0099-2240 |
| DOI: | 10.1128/aem.61.9.3293-3298.1995 |
| Popis: | An anaerobic diplococcoid bacterium able to degrade hydrolyzable tannins was isolated from the ruminal fluid of a goat fed desmodium (Desmodium ovalifolium), a tropical legume which contains levels as high as 17% condensed tannins. This strain grew under anaerobic conditions in the presence of up to 30 g of tannic acid per liter and tolerated a range of phenolic monomers, including gallic, ferulic, and p-coumaric acids. The predominant fermentation product from tannic acid breakdown was pyrogallol, as detected by high-performance liquid chromatography and mass spectrometry. Tannic acid degradation was dependent on the presence of a sugar such as glucose, fructose, arabinose, sucrose, galactose, cellobiose, or soluble starch as an added carbon and energy source. The strain also demonstrated resistance to condensed tannins up to a level of 4 g/liter. |
| Databáze: | OpenAIRE |
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