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Cold-active enzymes are produced by organisms that inhibit environments such as polar regions, ocean depths, and high altitudes where temperature is low throughout the year. Typically, such biocatalysts not only exhibit their highest activity below 25ºC [1], but are also heat sensitive – making them ideal for applications that require mild processing conditions. Consequently, cold-active enzymes have enormous industrial potential and can be used in a wide range of biotechnological applications, such as food processing or bioremediation.
The aim of the study was to determine whether selected bacterial isolates from Antarctica produce proteases or lipases. To test their hydrolytic activity, the microorganisms were grown on media supplemented with skimmed milk or polysorbates. The presence of clearance or turbidity zone around the colony indicated that the strain secreted proteases or lipases, respectively.
All bacteria tested showed proteolytic and/or lipolytic activity. The size of the observed clearance and/or turbidity zones varied, indicating that selected isolates produce different enzymes. Further research will focus on the isolation, purification and characterisation of selected proteases and/or lipases. Their potential commercial application would also be considered.
References:
1. Perfumo, A. et. at. (2020). Front. microbiol (11) 881.
| Scientific Sections | Enzyme and Fermentation |
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