ISSUE FOCUS 36 Alternative Proteins Magazine April 2025 THE PROBLEM WITH FISH MEAL, AND THE SEARCH FOR A SUSTAINABLE ALTERNATIVE As the global demand for animal protein rises, particularly in aquaculture, traditional protein sources such as fish meal are becoming increasingly unsustainable. Fish meal is rich in protein, essential fatty acids and has a balanced amino acid profile, but its limited availability and environmental impact are significant concerns. In response, the search for alternative protein sources has intensified. Plantbased ingredients are widely used in aquafeeds, but they often lack the complete nutritional profile that animal derived ingredients such as fish meal provides. This leaves a gap in the market for high-quality, cost-effective and sustainable protein sources for farmed fish and shrimp. Single-cell protein (SCP), sourced from microorganisms including bacteria, fungi, and algae, has gained recognition as a viable alternative due to its ability to be produced with minimal land and water resources. Additionally, it has the potential to utilize industrial side streams as substrates. However, for SCP to be viable as a large-scale feed ingredient, the microorganism used must meet strict requirements, including high protein content, a well-balanced amino acid profile, non-GMO status and scalability for industrial production. THE BREAKTHROUGH: FORTIFIED SCP THAT IS MORE SUSTAINABLE AND AFFORDABLE Among the various edible microorganisms, yeast, specifically Saccharomyces cerevisiae (brewer’s or baker’s As demand for animal protein grows and traditional feed ingredients become scarce and expensive, the aquaculture industry seeks sustainable alternatives. MicroBioGen has created an eco-friendly yeast-based protein that can be produced from industrial side streams, offering a high-quality substitute for fish meal that tackles environmental, economic and nutritional issues in aquafeed production. YEAST AS A SUSTAINABLE SINGLE-CELL PROTEIN FOR AQUAFEED Geoff Bell Chief Executive Officer MicroBioGen An Grobler Head of Communications MicroBioGen
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