A blend of proteolytic enzymes (alkaline elastase and neutral protease) derived from Bacillus subtilis were approved as GRAS in 1999 (FDA, 1999). Takagi et al. (1992) show alkaline elastase specifically degrades collagen and elastin with little degradation of myofibrillar protein resulting in less tenderizing effect but also decreasing the possibility of over-tenderizing. Bacillus subtilis proteases’ optimal and activity ranges vary depending upon the organism from which they are produced. McConn et al. (1964) found neutral protease activity to rapidly increase at 50°C with a dramatic drop above 65°C. The same authors found a broad pH activity from 5.0-9.0 pH with an optimal pH found at 7.0. Enzymatic activity occurs during storage for one, two and three days at 4°C as measured by a decrease in relative hardness (Qihe, 2006). This bacterial protease was developed to be an inexpensive alternative for ficin.