Enzymes are important biocatalysts used in various industries such as food, pharmaceutical, paper, and detergent. Microorganisms are the major source of enzymes in industrial biotechnology. Here are the top microbial sources of enzymes and their applications:
Bacteria: Bacteria are one of the major sources of industrially important enzymes. For example, Bacillus subtilis produces amylase, protease, and lipase which are widely used in the food industry. Streptomyces produces chitinase, an enzyme used in the production of chitin-based products such as biodegradable plastics and textiles.
Fungi: Fungi are another major source of enzymes used in industries. Aspergillus oryzae produces amylase and protease, which are used in the food industry for the production of soy sauce and sake. Trichoderma reesei produces cellulase, an enzyme used in the production of biofuels.
Yeasts: Yeasts are also important sources of enzymes. For example, Saccharomyces cerevisiae produces invertase, which is used in the production of high-fructose corn syrup, a common sweetener used in the food industry. Candida rugosa produces lipase, an enzyme used in the production of cosmetics and detergents.
Actinomycetes: Actinomycetes are filamentous bacteria that produce a wide range of enzymes used in industries. Streptomyces griseus produces streptokinase, an enzyme used in the treatment of blood clots. Streptomyces noursei produces nystatin, an antifungal antibiotic used in the pharmaceutical industry.
Algae: Algae are emerging sources of enzymes in industrial biotechnology. For example, Chlorella vulgaris produces superoxide dismutase, an antioxidant enzyme used in the cosmetic and pharmaceutical industries.
Archaea: Archaea are extremophilic microorganisms that inhabit extreme environments such as hot springs and deep-sea hydrothermal vents. These microorganisms produce enzymes with unique properties such as thermostability and halotolerance. Thermus aquaticus produces Taq polymerase, an enzyme used in the polymerase chain reaction (PCR) for DNA amplification.
In conclusion, microorganisms are important sources of enzymes used in various industries. These enzymes can be produced on a large scale using different fermentation techniques. With the advancement in molecular and biochemical approaches, it is now possible to engineer microbial enzymes with improved properties for wider industrial applications.