Abstract
In order to investigate the presence of thermo-tolerant rock phosphate (RP) solubilizing anaerobic microbes during the fermentation process, we used grassland as sole organic substrate to evaluate the RP solubilization process under anaerobic thermophilic conditions. The result shows a significant decrease of pH from 6.5 to 4.8, and solubilizing from 7 to 15.8% of the phosphorus from the RP in the reactors after 90 days of incubation at 45°C. In these conditions, the organic acids produced were qualitatively and quantitatively identified as: acetic, butyric and propionic acids. This biological RP solubilization is due to the presence of a single thermo-tolerant bacterium isolated and identified as Bacillus subtilis from the anaerobic reactors. This B. subtilis strain was shown to be able to solubilize RP in liquid cultures containing insoluble RP as sole phosphate source. The mechanisms involved in these weathering processes confirmed the production of organic acids which were identified and quantified. This study is expected to lead to the development of novel, non-polluting farming practices by entering in the formulation of novel multi-functional biofertilizer by inoculating this thermo-tolerant phosphate-solubilizing bacterium into agricultural wastes as a practical and environmental strategy. Key words: Grassland, phosphate, solubilization, Bacillus subtilis , thermo-anaerobic conditions.
Highlights
Immense benefits have been derived by man from using medicinal herbs in disease management because they are relatively safer, more affordable and sometimes offer better therapeutic value than synthetic drugs
This study investigates the effect of ethanol extract of Buccholzia coriacea seeds on the serum lipid profile of albino rats within a period of two weeks of treatments
Measurement of the serum lipid profile in rats administered with extract indicated a significant decrease (p
Summary
Immense benefits have been derived by man from using medicinal herbs in disease management because they are relatively safer, more affordable and sometimes offer better therapeutic value than synthetic drugs. Atherosclerosis or coronary artery disease is a condition characterized by deposits of lipids, mainly cholesterol on the inner walls of the arteries (Ghasi et al, 2002; Ugwu et al, 2013; Olantunji et al, 2005; Ezekwesili et al, 2008) These deposits narrow the arterial channels and partly block the normal flow of blood through them (Ahman et al, 1992; Ugwu et al, 2013; Ghasi et al, 2002; Olantunji et al, 2005; Ezekwesili et al, 2008). Low fat diets are often prescribed for the management of atherosclerosis
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