Influence of sodium tripolyphosphate and citric acid on the shelf life of thornback ray (Raja clavata L.).
Sodium tripolyphosphate dips (5 min in 12% solution) extended shelf life of thornback ray wings by about 2 days, improved the appearance and eliminated weight losses. With citric acid dips (5 min in 0.5% solution) a 3 day extension of storage life was obtained but the treatment had a slight bleaching effect and caused weight losses of about 5%. Both compounds were effective in retarding the breakdown of urea with formation of ammonia in thorback ray.
D000641:Ammonia / Q000378:metabolism; D000818:Animals; D001419:Bacteria / Q000378:metabolism; D002951:Citrates / Q000494:pharmacology*; D005399:Fishes; D005519:Food Preservation; D006863:Hydrogen-Ion Concentration; D011122:Polyphosphates / Q000494:pharmacology*
D002951:Citrates; D011122:Polyphosphates; D000641:Ammonia; C005692:triphosphoric acid