Improvement of Vegetation Potato "Nicola" by Slaughterhouses Wastes, Treated By Biological Way

Abstract

Improving and processing of slaughterhouse waste of red meat in Morocco are possible by highlighting biotechnology techniques. These biological techniques have the advantage of being easy and competitive with other methods used in the field of waste treatment. Thus, we were able to isolate and characterize two strains of lactic bacteria (HBL5, HBL10) and yeast strains (HL2, HL15) with a significant fermentative power. Stability of the product is obtained from the twelfth day of fermentation.

In addition, bacterial strains have a strong bactericidal effect vis-à-vis pathogens, allowing a significant improvement of the hygienic and organoleptic quality of the finished product, and the pH profile shows a remarkable evolution during fermentation to reach a stable value of 3.93. The acidity increased from 0.22% to 1.25% between the beginning and the end of fermentation.The fertilizer trials conducted by the bio-fertilizer showed a significant improvement of potato culture "Nicola" with a maximum value of 17.8 t / ha, obtained in the case of test II (15T/ha ) relative to the chemical treatment and control groups.

Keywords: Slaughterhouse waste - Fermentation - Bio-fertilizer – Valorization - Potato.