An emerging protein source: Single-cell protein

It’s hard to say how long single-cell proteins (SCPs) have been in production, but current developments are demonstrating some maturation of the sector in a commercial sense and widespread production for livestock feed can be expected. It was over 100 years ago when yeast protein was discovered by chance by a German scientist called Justus Liebig. Once commercialised, it became the food product Marmite that’s applied to bread like peanut butter. But SCPs also have a decades-old history in