Abstract

On incubating skeletal muscle homogenates from rainbow trout with lysolecithin (LL) and comparing them with homogenates of the same muscle without added LL, and after centrifuging the mixtures, it was found that the N content of the supernatant solution of the homogenate containing LL was about 20% higher than that of the homogenate without LL. Increases close to maximum in N content of the supernatant solution were found to occur at a concentration of about 4 mg LL per ml of incubation medium containing 100 mg muscle in 3.0 ml of 0.9% NaCl at a pH of 6.0–8.0 and at about 35 C for a period of 1 hr. Snake venom phospholipase A added to muscle homogenate showed no solubilizing activity and α-tocopherol acetate and cortisol showed irregular stimulation. It was concluded that LL exerts a solubilizing action on fish muscle homogenates.

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