LPO and mastitis: LPO has been found in good amount in goat milk and its consumption inhibits the growth of some fungi like Aspergillus, P. chrysogenum, T. species, phytopthora and A. Flavus (Jacob et al., 2000) but increased expression of LPO activity in milk is a direct indication of mastitis, an inflammation of the breast tissue commonly caused by S. epidermidis and Streptococci.