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Articles by P.W. Savadogo
Total Records ( 2 ) for P.W. Savadogo
  L.W. Nitiema , D. Dianou , J. Simpore , S.D. Karou , P.W. Savadogo and A.S. Traore
  An anaerobic digester fed with shea cake rich in tannins and phenolic compounds rich-shea cake and previously inoculated with anaerobic sludge from the pit of a slaughterhouse, enabled six months acclimatization of the bacteria to aromatic compounds. Afterwards, digester waste water samples were subject to successive culture on media with 1 g L-1 tannic acid allowing the isolation of a bacterial strain coded AB. Strain AB was facultatively anaerobic, mesophilic, non-motile, non-sporulating, catalase and oxidase negative bacterium, namely strain AB, was isolated from an anaerobic digester fed with shea cake rich in tannins and phenolic compounds, after inoculation with anaerobic sludge from the pit of a slaughterhouse and enrichment on tannic acid. The coccoid cells occurred in pair, short or long chains and stained Gram-positive. Strain AB fermented a wide range of carbohydrates including glucose, fructose, galactose, raffinose, arabinose, sucrose, maltose, lactose, starch and cellulose. Optimum growth occurred with glucose and tannic acid at 37°C and pH 8. The pH, temperature and salt concentration for growth ranged from 5 to 9, 20 to 45°C and 0 to 15 g L-1, respectively. Strain AB converted tannic acid to gallic acid. These features were similar to those of the Streptococcus genus. The determination of tannic acid hydrolysis end products, ability to utilize various organic acids, alcohols and peptides, GC% of the DNA, the sequencing of 16S rRNA gene and DNA-DNA hybridization will permit to confirm this affiliation and to determine the species.
  R.W.A. Nare , P.W. Savadogo , Z. Gnankambary and M.P. Sedogo
  The effect of endosulfan, deltamethrin and profenophos on microbial respiration parameters were studied in soil from cultivated and fallow plot from Burkina Faso. Microcosms of soil were incubated at 25.0°C. All pesticides were applied separately at the rate of 200 mg kg-1 and then 7 days later, glucose, nitrogen and phosphorus were added to the incubated soil. Basal respiration was higher with cultivated plot (0.034±0.015 mg-CO2 g-1 soil) compared with fallow plot (0.028±0.014 mg-CO2 g-1 soil). With cultivated soil, endosulfan application decreased Basal Respiration while an increase was observed with profenophos and deltamethrin applications and the control. Substrate Induced Respiration varied from 0.014 to 0.016 mg-CO2 g-1 soil and 0.026 to 0.034 mg-CO2 g-1 soil in cultivated soil and fallow soil, respectively. Short lag time (11-14 h) was observed with cultivated soil as compared with soil from fallow plot (53-69 h). Pesticide application did not affect significantly the lag time with cultivated soil, while with fallow soil, significant reduction were observed. In the two soils, pesticide application anticipated the apparition of the maximum respiration rate compared to the control.
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