Define Proline
It is a prominent amino acid found in fish and may contribute to sweetness. The sugars ribose, glucose and glucose-6-phosphate are flavour contributors, as is 5-inosinic acid, which contributes a meaty flavour note. Volatile sulfur compounds contribute to the flavour of fish; hydrogen sulphide, methylmercaptan and dimethylsulfide may contribute to the aroma of fish.