Amylase Production from Soil Microorganisms: A Comprehensive Review

Abstract

Enzymes play a vital role in numerous industrial applications, and amylase is among the most extensively utilized enzymes. Amylases hydrolyze starch, a complex polysaccharide, into simpler sugars, and their production from microbial sources has gained considerable attention. While various organisms have been explored for amylase production, soil represents an intriguing and abundant source of potential amylase-producing microorganisms. This review paper aims to provide a comprehensive overview of amylase production from the soil, focusing on microbial diversity, screening and isolation methods, optimization strategies, and the influence of environmental factors on amylase synthesis. The review encompasses a systematic analysis of research articles, conference papers, and relevant literature published in the past two decades. It begins by highlighting the diverse range of microorganisms found in soil ecosystems, including bacteria, fungi, actinomycetes, and archaea, which possess the genetic potential for amylase production. Various screening and isolation techniques employed to identify potential amylase-producing strains from the soil are discussed, including culture-dependent and culture-independent methods. Furthermore, this review provides insights into the optimization of amylase production from soil microorganisms, encompassing fermentation parameters such as temperature, pH, carbon and nitrogen sources, and incubation time. The influence of various physical and chemical factors, such as substrate concentration, metal ions, inducers, and inhibitors, on amylase synthesis is also discussed. Additionally, the potential application of molecular techniques, such as genomics, metagenomics, and transcriptomics, in elucidating the genetic basis and regulation of amylase production in soil microorganisms is explored. The review also highlights the significance of exploring the enzymatic potential of uncultivable or yet-to-be-cultured microorganisms residing in soil habitats. In conclusion, this comprehensive review provides a valuable resource for researchers, biotechnologists, and industrial practitioners interested in harnessing amylase from soil microorganisms. It emphasizes the importance of understanding microbial diversity, screening methods, optimization strategies, and environmental factors governing amylase production. Future prospects and challenges associated with amylase production from the soil are also discussed, with the aim of inspiring further research and development in this promising field.