Effect of soaking solution pH was investigated by using glycine,proline, lysine, and arginine at 1.0 g/100 ml with pH adjusted to 7.0,8.0 and 8.7 by using NaOH or HCl. The shrimps were soaked, frozenand thawed following with cooking as described in 2.3. Soaking,thawing, and cooking yield, texture, appearance, and color of cooked and uncooked shrimps after a freeze-thaw cycle were measured. All experiments were carried out in three replications and the results were averaged.