Michele Fauble: 11:10pm Aug 29, 2006: Could you provide more context - maybe the whole sentence? Clare Haggart: 5:50am Aug 30, 2006: Anteil vom fermentlösliches Protein am Protein weniger als 70%. The text is about tests carried out on dog food.
a protein soluble by fermentation/digestible via fermentation
Erklärung: Lacking much in the way of context, I would think they are referring to the process of fermentation in protein digestion. Maybe the websites will help some.
Beispielsätze:
Concentrations of protein fermentation products are higher in the left sided (distal) colon as compared to the right sided (proximal) colon suggesting that protein fermentation is more prevalent in the distal colon.
The translation workplace 
