M.Sc.

    The ability of Xanthomonas campestris strain H6 for the production of α – amylase  was studied and it was found that Xc H6 is capable of producing the e xtracelluar α – amylase enzyme.  Optimal conditions for the α – amylase production in PM1 medium were studied and the higher activity of this enzyme was obtained in PM1 medium  supplemented with  glucose 3.5 %, peptone 2 %, K₂HPO₄ 2.5 %    at 30 ºC and pH 7.0.   Results obtained demonstrate that α – amylase  produced by Xc H6 is a constitutive enzyme that is not subjected to ca

     Ochratoxin A is a natural secondary product by several fungi of the genera Aspergillus & Penicillium in different agriculture commodities. It causes great economic losses and health hazard to human and farm animals.