Production of Proline and Protease With Different Organic Wastes in Bacteria

Abstract Background: In this study, we investigated the proline and protease production of different bacteria in several organic waste materials. Our aim was to produce proline and protease economically in waste that is abundantly available while reducing its environmental impact. Methods: 5 ml of different organic waste materials were placed in 10 ml grow tubes, inoculated and incubated for 24 h. Phosphate-buffered saline and 10% solutions of different organic wastes were added. These cultures were subsequently incubated at 37°C for 24 h. Cells were harvested at 24 h for L-proline assay. 1 ml of culture was transferred by pipette into an Eppendorf tube and centrifuged at at room temperature. Cellular debris was removed by centrifuge and the supernatant was used for proline activity assays. Results: Protease activity was determined using a modified method with casein as the substrate. We found that proline and protease can easily be produced economically using TCW, WCW and OWW organic waste. Conclusion: We believe that this study will result in similar research leading to the economical use of these waste materials thus reducing their impact on the environment.