Amino Acid Composition of Roe from Wild and Farmed Beluga Sturgeon ( Huso huso )

Abstract

Caviar is one of the valuable and most popular fish products all over the world that are obtained from sturgeons. Nowadays, the wild resourc es of these fishes are diminished, therefore, to meet the demand for the product, farm ing sturgeons has been considered. The chemical composition and the amino acids profil es of the wild and farmed roe obtained from beluga ( Huso huso ) were compared and the results have indicated that the amount of glutamine, serine, alanine, methionine, a nd lysine in the wild roe were higher than the farmed one (P< 0.05). The total amino acid s (TAAs) and the ratio of essential amino acids (EAAs) to TAAs and EAAs to non-essentia l amino acids (N-EAAs) in the samples from the wild and farmed roe were similar ( P> 0.05). The protein efficiency ratio (PER) and chemical score in farmed and wild roe wer e also similar (P> 0.05). The results showed that the farmed roe was similar to the wild one based on chemical composition, chemical score, PER, EAAs/TAAs and EAAs/N-EAAs. Acc ording to the results, farmed roe can be a good substitution for wild beluga roe ( Huso huso ). Keywords : Caviar, Beluga, Amino acid, Chemical score.