The objective of this study was to evaluate the effects of molasses and propionic acid on the fermentation quality and aerobic stability of total mixed ration (TMR) silages prepared with whole-plant corn in Tibet. TMR (354 g/kg DM) was ensiled with four different treatments: no additive (control), molasses (M), propionic acid (P), and molasses+propionic acid (PM), in laboratory silos (250 mL) a...

Moore, W. E. C. (Virginia Agricultural Experiment Station, Virginia Polytechnic Institute, Blacksburg) and Elizabeth P. Cato. Validity of Propionibacterium acnes (Gilchrist) Douglas and Gunter comb. nov. J. Bacteriol. 85:870-874. 1963.-ATCC strains of Corynebacterium acnes 11827, 6921, and 6922 were tested and consistently found to ferment lactate with the production of propionate, acetate, and...

In this study, the effect of zinc and nickel on oxygen consumption in sediments was determined using oxygen microsensors. Sediments from the southwest lagoon of New Caledonia, in the vicinity of the city of Nouméa, were incubated nearby in situ conditions and exposed to Zn and Ni concentrations of 20 and 60 mg l(-1). The depth distribution of oxygen consumption was estimated from the steady-sta...

The aim of this study is to determine the effects addition different rates sumac powder corn green (0%, 0.5%, 1% and 2%) on fermentation properties, silage quality aerobic stability. In study, a total 16 samples, 4 repetitions from each group, were placed in 1.5-litre glass jars compressed. Silages left for 60 days. addition, silages subjected stability test 5 days immediately after opening. lo...

A study of the carbohydrate metabolism of Sarcina lutea was undertaken to elucidate the routes of metabolism available to this strict aerobe which does not metabolize glucose anaerobically. It was of interest, therefore, to discover whether the organism possesses enzymes characteristic of anaerobic fermentation and, if so, their importance in aerobic glucose oxidation. The process of terminal r...

A direct relationship has been shown between the maximum cell concentration and aeration efficiency with aerobic microorganisms (Maxon and Johnson, 1953; Smith and Johnson, 1954). Since the antibiotic titer generally varies directly with the weight of mycelium in streptomycete fermentations, it is imperative to define the dependence of antibiotic and mycelial syntheses on the aeration efficienc...

Intestinal inflammation caused by Salmonella enterica serovar Typhimurium increases the availability of electron acceptors that fuel a respiratory growth of the pathogen in the intestinal lumen. Here we show that one of the carbon sources driving this respiratory expansion in the mouse model is 1,2-propanediol, a microbial fermentation product. 1,2-propanediol utilization required intestinal in...

Strain T1E, isolated and identified as Brevibacillus thermoruber, and evolutionally distant from the known keratinolytic isolates, proved to have feather-degrading ability. During the 7-day fermentation period, T1E consumed 10 g/l native goose feathers as the sole source of carbon and energy at 50 degrees C under aerobic conditions. The isolate secreted a thermostable, keratinolytic protease, w...

Redox homeostasis is fundamental to the maintenance of metabolism. Redox imbalance can cause oxidative stress, which affects metabolism and growth. Water-forming NADH oxidase regulates the redox balance by oxidizing cytosolic NADH to NAD(+), which relieves cytosolic NADH accumulation through rapid glucose consumption in Saccharomyces cerevisiae, thus decreasing the production of the by product ...

During aerobic growth of Escherichia coli, expression of catabolic enzymes and envelope and periplasmic proteins is regulated by pH. Additional modes of pH regulation were revealed under anaerobiosis. E. coli K-12 strain W3110 was cultured anaerobically in broth medium buffered at pH 5.5 or 8.5 for protein identification on proteomic two-dimensional gels. A total of 32 proteins from anaerobic c...