Cellulose digestion

Significantly enhanced growth when compared to sheep fed 0.36 mg Mo/kg diet growth associated with increased cellulose digestibility by rumen biota (5)... 

Termites digest glucose produced by cellulose-digesting microorganisms living in the termites digestive tract. 

The complete analysis comprises determinations of the moisture, ash, gluten, nitrogen, fat, cellulose, digestible carbohydrates and acidity. All these determinations are made on the finely powdered material by the methods described for flour. The following investigations are also of importance. 

Cellulose Digestibility of Forages by Rumen Bacteria, J. Dairy Sci. 1961, 44, 2242. 

McAllister TA, Martinez T, Bae FID, Muir AD, Yanke LJ, Jones GA. 2005. Characterization of condensed tannins purified from legume forages Chromophore production, protein precipitation, and inhibitory effects on cellulose digestion. J Chem Ecol 31 2049-2068. 

Many favor dilute sulfuric acid pretreatment because both high hemicellulose recovery and good cellulose digestibility can be achieved (6-8). Moreover, most of the soluble sugars from dilute-acid pretreatment are released as monomers that can be readily fermented to ethanol by recombinant organisms (9,10). Pretreatment with just hot water or steam, termed uncatalyzed hydrolysis or autohydrolysis, eliminates chemical additives, lowers the cost of materials of construction, and generates less waste, but hemicellulose and cellulose yields from batch systems are limited. 

Cellulose Digestion Cellulose could provide a widely available and cheap form of glucose, but humans cannot digest it. Why not If you were offered a procedure that allowed you to acquire this ability, would you accept Why or why not ... 

Simplified procedure for measuring cellulose digestion by rumen microorganisms. Contribs. Boyce Thompson Inst., 17, 337 (1954). With R. Henderson and F. E. Hervat. 

The biodegradation of cellulose is caused by enzymes known as cellulases [471-475]. Cellu-lases are produced by many microorganisms (bacteria and fungi). The most widely studied cellulases are of fungal origin, e.g., Trichoderma [471,473]. The cellulose-digesting bacteria of the rumen are a complex anaerobic community [476,477]. 

Martin MM. The evolution of cellulose digestion in insects. Phil. 

These enzymes are discussed in Chapter 12, Secfion B,6. Genefic engineering methods now offer the prospect of designing efficient cellulose-digesting yeasts that may be used to produce useful fermen-fafion producfs from cellulose wastes. 

Minerals. Most of our available information on the influence of minerals on lignocellulose utilization has been obtained with the in vitro rumen system. Molybdenum increased cellulose digestibility in vitro and... 

Cobalt, while essential at low levels for vitamin Bi2 synthesis and efficient functioning of rumen microflora, will depress cellulolytic activity of rumen microflora in vitro at levels of 12 p.p.m. and above (35). Selenium inhibited cellulose digestion in vitro at the 0.3 p.p.m. level (24). 

The dry matter and cellulose digestibilities of all the samples were determined using a modification of the in vitro procedure of Tilley et al. (57). Rumen liquor collected from a rumen fistulated steer fed alfalfa... 

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