Biodegradation of poultry waste for the production of mosquitocidal toxins

Optimization of Bio-Mosquitocidal Production using Local Bacterial Strains of Bacillus Sphaericus

“…Wang and Parsons 1997 reported that the hydrothermal treatment resulted in yielding a product with poor digestibility and variable nutrient quality [29]. Our results are not in accordance with the findings of Poopathi and Abidha [10] perhaps due to the differences in reference media that used as a control. They used NYS medium that has lower productivity than poly medium.…”

“…However, Poopathy and Abidha [10] found that the toxicity of B. sphaericus (2362 SPH-88) grown in medium contained chicken feather powder at 5 g/l was statically similar to that grown in NYSM. Our results indicated that chicken feather powder at concentrations up to 20 g/l is not sufficient for production of the maximal potent biocide comparing to poly medium.…”

“…The feathers were washed, air dried; then stored at room temperature to be used as a whole or crushed to fine powder using grinding mill and stored in packed condition at room temperature [9,10]. Total nitrogen and carbon were estimated.…”

“…Most of studies cited aimed to obtain microbial growth and toxic protein yield similar to or higher than that attained by reference laboratory medium, in such comparative studies researchers always used one random reference medium [6][7][8][9][10][11]. In our previous study [12], we evaluated five conventional laboratory media named: poly medium, nutrient yeast extract salt, glucose-glutamatesalts-EDTA, Luria Bertani and acetate yeast extract medium, for the growth and biocide production by B. sphaericus strains EMCC1931, EMCC1932 along with the reference strains.…”

Physical and mechanical properties of waterlogged wood treated with hydrolyzed feather keratin

“…Feather is composed of mainly keratin protein and the molecular mass of feather keratin is lower than that of other keratin proteins such as wool or hair keratins. Therefore, various uses for feather keratin have been developed, such as a substrate for cell culture medium (Poopathi and Abidha, 2008), production of enzymes (Azeredo et al, 2006) and material of fiber composites (Bullions et al, 2006). We confirmed that the new conservation treatment using avian feather provided good stabilization for waterlogged wood (Endo et al, 2008).…”