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Microalgal conversion of whey and lactose containing substrates: current state and challenges
Sergejs Kolesovs1, Pavels Semjonovs2
1Laboratory of Industrial Microbiology and Food Biotechnology, Institute of Biology, University of Latvia, Ojara Vaciesa Street 4, Riga, LV-1004, Latvia.
Biodegradation
|June 17, 2023
Summary
Dairy by-products like whey can be converted by microalgae into valuable products, reducing environmental risks and production costs. Further research is needed for large-scale application of this sustainable bioprocess.
Area of Science:
- Biotechnology
- Environmental Science
- Microbiology
Background:
- Dairy processing by-products, such as whey, pose environmental risks if not properly managed.
- Microalgal bioconversion offers a sustainable solution for valorizing lactose-rich substrates.
Purpose of the Study:
- To review the current knowledge on using lactose-containing substrates for microalgal bio-product production.
- To assess the potential of microalgae in reducing environmental risks associated with dairy waste.
Main Methods:
- Review of existing literature on microalgal cultures, fermentation methods, and cultivation conditions.
- Analysis of bioprocess productivity and the capacity of microalgal cultures to produce β-galactosidases.
- Exploration of co-cultivation strategies with other microorganisms.
Main Results:
- Lactose-containing substrates can be effectively utilized for microalgal biomass production and nutrient removal.
- Microalgal bioconversion can significantly reduce environmental risks associated with dairy by-products.
- Co-cultivation enhances nutrient removal and biomass yield.
Conclusions:
- Despite limitations, lactose-rich substrates are viable for microalgal biomass and value-added product generation.
- Further research on lactose metabolism, strain selection, and process optimization is crucial for large-scale implementation.
- Microalgal bioconversion presents a promising avenue for sustainable dairy waste management and resource recovery.
