Spent Yeast Valorization for Food Applications: Effect of Different Extraction Methodologies

Area of Science:

• Synthetic biology
• Biotechnology
• Food Science

Background:

• Engineered yeast strains are crucial for sustainable ingredient production.
• Spent yeast, a byproduct of yeast fermentation, is rich in protein and nutrients.
• Growing global protein demand necessitates alternative, sustainable sources.

Purpose of the Study:

• To develop peptide-rich extracts from spent yeast using scalable and sustainable methods.
• To explore a circular economy approach for utilizing a byproduct of synthetic biology.
• To assess the potential of spent yeast for the food and nutraceutical industries.

Main Methods:

• Extraction of peptides from genetically modified yeast strains.
• Utilizing autolysis as a sustainable method for peptide extraction.
• Evaluating different scalable methodologies for industrial application.

Main Results:

• Genetically modified yeast strains yielded extracts with excellent nutritional profiles.
• Low molecular weight peptides were successfully produced.
• Autolysis demonstrated potential as a sustainable extraction approach.

Conclusions:

• Spent yeast is a viable source for peptide-rich extracts.
• Genetically modified strains and autolysis offer promising routes for sustainable production.
• Further research on green metrics is needed for industrial-scale implementation.