💡 Researchers at University College Dublin (UCD) have found that supplementing yeast spent media can enhance titer and growth. 🌿 This suggests that a circular green economy is feasible for biopharmaceutical fermentation operations. 🧪 They discovered that adding magnesium and sodium to the spent media improved the growth rate of E. coli and increased protein titer. 🧫 This approach not only increases productivity but also reduces energy use and waste. 👩🔬🌍
📢 Boosted Growth and Titer: Revolutionary Findings in Green Biopharmaceutical Fermentation
Supplementation Ups Titer and Growth of Yeast Spent Media
Main points:
- When yeast spent media from vat fermentation is supplemented and reused, it can outperform fresh culture media, according to researchers at University College Dublin (UCD).
- Concentrations of sodium and magnesium were lower in the spent media, while levels of phosphorus, sulfur, potassium, and calcium were comparable to those of rich biological media.
- Adding magnesium and sodium to the spent media improved the growth rate of E. coli cultures.
- Supplementing amino acids helped support the culture’s growth rate and productivity.
- The highest recombinant protein titer was achieved when 2 mM of magnesium and 1% tryptone solution were added to the depleted culture.
Conclusion:
The researchers found that supplementing spent yeast media with magnesium, sodium, and amino acids enhanced the growth and productivity of E. coli cultures. This approach not only increased the protein titer but also reduced energy use. The study suggests that a circular green economy is feasible for biopharmaceutical fermentation operations, where spent media can be reused with minimal supplementation. Further collaboration with industrial teams is needed to evaluate the approach on a larger scale and explore the valorization of yeast spent media.
