Enhancement of protein metabolism and enzyme activities in haemolymph of silkworm, Bombyx mori L. by ultrasound treatment during fifth instar development.

4 Abstract: Present study explains about the enhancement of protein metabolism and enzyme activities in haemolymph of the silkworm, Bombyx mori L during the fifth instar larva stage. The parameters of protein metabolism, such as the levels of soluble, total proteins and free amino acids and the activity levels of protease, glutamate dehydrogenase, aspartate aminotransferase and alanine aminotransferase were assayed to know the impact of ultrasound. In general ultrasound has an elevatory effect on these parameters. Changes in the levels of these biochemical constituents are correlated with the events of histogenesis and histolysis associated with the silkworm metamorphosis. Under the influence of ultrasound protein metabolism and enzyme activities are stimulated to achieve greater turnover of silk proteins, greater spinning activity and consequently greater sericultural output.