Value Per Nutrient Food 0.04 g 100 grams Hydroxyproline Chicken, liver, all classes, cooked, pan-fried 0.04 g 100 grams Hydroxyproline Fish, salmon, Atlantic, farmed, raw 0.04 g 100 grams Hydroxyproline Pork, fresh, composite of trimmed retail cuts (loin and shoulder blade), separable lean and fat, raw 0.04 g 100 grams Hydroxyproline Peanut butter, chunk style, without salt 0.04 g 100 grams Hydroxyproline Pork, fresh, spareribs, separable lean and fat, raw 0.04 g 100 grams Hydroxyproline Turkey roll, light meat 0.04 g 100 grams Hydroxyproline Pork, fresh, separable fat, cooked 0.04 g 100 grams Hydroxyproline Pork, fresh, composite of trimmed retail cuts (loin and shoulder blade), separable lean and fat, cooked