Cooking yield of frozen shrimps was also improved by using lysine and arginine.
Soaking of the white shrimp in the solution of arginine at 1.0 g/100 ml with NaCl at 3.0 g/100 ml could reduce the freezing loss, vice versa, increase the thawing yield and
cooking yield of the frozen shrimp comparable to the use of the commercial phosphate compound.
Even though lysine and arginine treated uncooked sample indicated a reddish color, there was no significant difference in the color preference of any cooked products.
Sensory evaluation showed that panelists liked the arginine treated sample more than the STTP treated sample.
Adjusting pH of lysine and arginine (1.0 g/100 ml) to 8.0e8.7 resulted in shrimps
with comparatively same WHC during freezing and cooking with similar color change compared to treatment with STPP.
The results indicated high potential of using the amino acids, lysine and arginine,
as phosphate alternatives to improve the quality of white shrimp product in the frozen shrimp industry.