As far as the spoilage due to proteolysis is concerned , the soluble sarcoplasmic proteins are probably the initial substrate for proteolytic attack (). Assumed that if only autolysis occurred during storage of muscle food, a similar pattern of protein breakdowm could be expected in all samples, irrespective of the manner of their storage or of the contribution of the ephemeral spoilage groups in the final microbial association; however, the above hypothesis was not confirmed in their studies with poultry meat. Bacteria appear to affect changes in solubility of proteins as shown with hight-performance liquid chromatography(HPLC) analysis. Indeed it was evident that new hydrophilic and hydrophobic peaks appeared progressively or at the end of storage in all samples stored at 3 and 10 c. Moreover,the fanal concentration of the peaks present initially varied significantly among all the samples tested at the end of storage. These changes, which were evident even during the earliest stages of storage , regardless of microbial populations() ,could be attributed not only to the indigenous proteolytic meat enzymes(autolysis) but also to the microbial proteolytic activity (). It need to be noted that lactic acid bacteria are considered to be weakly proteolytic() when compared with many other bacteria, such as Psudomonas spp. The proteolytic activity of the latter bacteria can lead to their penetration into meat(). The proteolytic bacteria may gain an ecological advantage through penetration because they then have access to a new niche with newly available resources for exploitation which would not be accessible or available to the non-or less proteolytic bacteria