Biological contaminants in the cultivation of microalgae

Document Type : article

Authors

1 Faculty member of inland water Aquaculture research center

2 Faculty member of Inland Waters Aquaculture Research Center

3 inland water aquaculture research center

Abstract

Microalgae are simple photosynthetic unicellular or multicellular microorganisms. Their size is generally smaller than 400 microns and they form the basis of the entire aquatic food chain. These microorganisms due to their high adaptability to different ecological conditions; They have a high variety. In the last few decades, researchers and scientists are focused on investigating microalgae for the possibility of their exploitation as a source of energy production and sustainable control of environmental pollutants. On the other hand, this group of aquatic animals has been considered as a suitable nutrient in aquaculture due to the high concentration of proteins, vitamins and fatty acids, antioxidant molecules and pigments. In order to enter the field of exploitation of these microorganisms in the field of biotechnology and aquaculture, the cultivation of a large amount of these microalgae is required. The production of significant amounts of algal biomass in addition to the culture medium used increases the possibility of contamination. The presence of biological pollutants can often lead to a decrease in biomass and sometimes widespread death of microalgae. In commercial cultivation, fungi are one of the main contamination factors. This review is related to the common cases of contamination of laboratory and open algal culture and especially fungal pollutants.

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