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Microbiological and near IR studies of leather from hides presoaked in formulations that can remove hardened bovine manure

Ramos, Mila L., Muir, Zerlina E., Solaiman, Daniel K. Y., Schreyer, Suzanne
Journal of the American Leather Chemists Association 2012 v.107 no.9 pp. 302
agar, antibiotics, cattle manure, cleaning, cleaning agents, decontamination, glycerol, ingredients, leather, leather industry, microbial contamination, microbial growth, near-infrared spectroscopy, soaking, sodium carbonate, surfactants
The standard soaking solution that the industry has been using in cleaning dirty hides is usually composed of a high concentration of antibiotic and surfactant. It is observed to be good in eliminating the microbial contamination (~99.9%) presented on the hides but is not as efficient in removing the adobe-type manure. In this study, we report the microbial growth of the different manure soaking solutions and the chemical changes at the surface of the hide after soaking. The microbial growth is monitored by inoculating on agar plates the washings from the manure soaked in different manure removal formulations. It was observed that a new eco-friendly solution composed of only a fraction of the standard soaking formulation is capable of eliminating about 70% of the microbial growth when 10% crude glycerol and 1.0% sodium carbonate are included in the solution. The crude glycerol alone has shown microbial growth compared to the pure glycerol that exhibited no growth but the other ingredients present in crude glycerol could have enhanced the efficiency in softening and eventually removal of adobe type manure.