Results 211 to 220 of about 13,333 (252)

Hemicellulose-degrading enzymes in rumen ciliate protozoa

Current Microbiology, 1985
Hemicellulose-degrading enzymes were detected in cell-free extracts of protozoa representing ten genera of rumen entodiniomorphid and holotrich ciliates. The enzyme preparations released monosaccharides, disaccharides, and oligomers fromLolium perenne hemicellulose B and oat spelt xylan; the activity was present both in cells isolated directly from ...
Alan G. Williams, Geoffrey S. Coleman
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Studies on Lignocellulose Degradation by Rumen Microorganism

Advanced Materials Research, 2013
Lignocellulosic material is the earth's most abundant renewable resource, but because of its stable and complex structure, it is not easy for depredating and utilizing for a long time. Rumen can degrade lignocellulose, and is one of nature's most efficient fermentation fermenter; to be study rumen microorganisms has the potential to provide valuable ...
Guan Rong Wang, Yu Lin Duan
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Anaerobic degradation of dehydrodiisoeugenol by rumen bacteria

Journal of Fermentation Technology, 1987
Abstract The degradation of dehydrodiisoeugenol (DDIE) by cow rumen bacteria was studied under strictly anaerobic conditions. After two days of cultivation, about 23% of DDIE (1.2 mM) was degraded to volatile fatty acids (VFA) such as acetic acid, propionic acid and butyric acid.
Wei Chen, Kunio Ohmiya, Shoichi Shimizu, Hidekuni Kawakami   +3 more
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Protein degradation in the rumen of sheep and cattle

Journal of the Science of Food and Agriculture, 1983
AbstractSheep and steers were given, at a maintenance level of feeding, four diets consisting of either poor quality dried grass, good quality dried grass or separate mixtures (63:35) of each of the dried grasses and barley. Ammonia and total N concentrations in rumen liquor were significantly higher in sheep than in steers whereas total volatile fatty
R C, Siddons, J, Paradine
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Microbial degradation of usnic acid in the reindeer rumen

Naturwissenschaften, 2009
Reindeer (Rangifer tarandus) eat and utilize lichens as an important source of energy and nutrients in winter. Lichens synthesize and accumulate a wide variety of phenolic secondary compounds, such as usnic acid, as a defense against herbivores and to protect against damage by UV-light in solar radiation. We have examined where and to what extent these
Monica A, Sundset, Perry S, Barboza, Thomas K, Green, Lars P, Folkow, Arnoldus Schytte, Blix, Svein D, Mathiesen   +5 more
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Identification of rumen bacteria that anaerobically degrade aliphatic nitrotoxins

Canadian Journal of Microbiology, 1981
Of 33 pure strains of rumen bacteria from the Lethbridge laboratory collection, 5 degraded both 3-nitropropanol (NPOH) and 3-nitropropionic acid (NPA) under anaerobic conditions, and another 5 strains degraded only NPA. The nitroacid was metabolized at a faster rate than the nitroalcohol by both pure cultures of rumen bacteria and mixed rumen ...
W, Majak, K J, Cheng
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Effects of rumen-degradable protein balance on rumen fermentation in continuous culture fermenters

Frontiers of Agriculture in China, 2011
Twelve dual-flow continuous culture fermenters (culture 8 d with 5 d for adjustment and 3 d for sample collection) were used to evaluate the effects of rumen-degradable protein balance (RDPB) on rumen fermentation. The different RDPB levels in six diets were as follows: − 16.84, − 8.87, − 0.87, + 7.13, + 15.13, and + 23.12 g RDPB /kg DM.
Qiufeng Li, Yanxia Gao, Yufeng Cao, Zhihua Feng, Jianguo Li   +4 more
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Anaerobic batch degradation of cattail by rumen cultures

International Journal of Environment and Pollution, 2009
The anaerobic batch digestion of cattail with two substrate concentrations of 10 g and 30 g Volatile Solids (VS)/l was investigated in this study. The hydrolysis of cattail was not significantly affected by the substrate concentrations, and it was able to be described by a first-order kinetic model with hydrolysis constants of 0.298 d−1 and 0.294 d−1 ...
Zheng Bo Yue, Han Qing Yu
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Biomass degrading enzymes from anaerobic rumen fungi.

SAAS bulletin, biochemistry and biotechnology, 1995
Obligately anaerobic fungi are part of the natural microflora of the alimentary tract of many herbivorous mammals. They produce a complete set of polysaccharide hydrolytic enzymes which efficiently degrade plant cell-walls. This article summarizes the present work on biomass degrading enzymes with special emphasis on their cellulases, xylanases, and ...
H, Chen, X L, Li, L G, Ljungdahl
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In vitro degradation of amines by rumen micro-organisms

1995
International ...
van Os, M., Lassalas, Bernadette, Toillon, Sylvie, Jouany, J.P.   +3 more
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