the use of all amino acids indicated higher soaking yield and thawing yield than the control
4. Conclusion
Use of amino acid, proline, lysine and arginine in combination of NaCl showed synergistic effect on increasing water holding in shrimp meat.
Cooking yield of frozen shrimpswas 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.