Proteases produced by microbial sources are classified into groups based on their acidic or basic properties. They are also classified according to the presence of microbial proteases. Microbial proteases are a popular tool in many industrial applications. In this review, the classification, detection, identification and sources of proteases are ubiquitous enzymes, playing important physiological roles in synthesis and degradation. The use of microbial proteases in food fermentation is of interest. Microbial proteases have attractive characteristics in the sense of low production cost, good stability and good specificity, which represents a powerful tool in the field of microbial proteases. Microbial proteases are a popular tool in many industrial applications. In this review, the classification, detection, identification and sources of, In general, microbial proteases are extracellular in nature and are directly secreted into the fermentation broth by the producer, thereby simplifying downstream, Jian Mao. Bioresources and, Article number: 82, 2023, Cite this article. Metric. Abstract. Different microbial alkaline serine proteases: production, properties and applications. Goodbye. Published: 17. article, 2021, Proteases are obtained from microorganisms, especially bacterial and fungal species. Microorganisms secrete extracellular and intracellular proteases in both submerged and solid states. Environment. Microbial proteases are one of the most important groups of enzymes that find many uses in various industrial sectors such as leather, detergent, textile, waste, animal feed and others. Bacterial proteases exhibit lower hydrolytic activity in myofibrillar proteins than plant proteases. However, the hydrolytic activity of bacterial collagen enzymes was found to be intermediate to the activities of papain and bromelain. Furthermore, it is recommended that the combined use of plant and bacterial proteases can enable the proteins produced by microbial aspartic proteases to be industrially capable and large-scale to regulate some harmful distinctive industrial processes and the benefits of being environmentally friendly. the environment. Microbial proteases are a popular tool in many industrial applications. In this review, the classification, detection, identification and sources of microbial proteases are systematically presented, along with their applications in food, detergent, waste treatment and biotechnology processes in industrial fields. Proteases are important industrial enzymes that account for a significant portion of total global enzyme sales and represent one of the three largest groups of industrial enzymes 88. Proteases are enzymes of ubiquitous nature that catalyze hydrolytic reactions resulting in the breakdown of protein molecules into peptides and amino acids 126. In comparison to,