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Abstract
The present investigation is an attempt to analyze and compare the changes in amylase, acid phosphatase and alkaline phosphatase in Bombyx mori pure races namely pure mysore and NB4D2 in all the four remarkably different developmental stages, the IVth larva , Vth larva, pupa and the moth. The protein content of all the three enzymes was found to increase in both the races of Bombyx mori during developmental stage. But the protein content of amylase and alkaline phosphatase were higher in Vth instar stage whereas, acid phosphates were more in pupa stage. All these Biochemical parameters were higher in female adult moth than in male adult moth. The specific activity of these enzymes showed a similar trend like that of enzyme activity of acid & alkaline phosphate in haemolymph at different developmental stage in Bombyx mori L growth. Published studies of silks focus on processed fibers or the optimum condition for their production. Consequently the temporal impact of temperature on biochemical properties of cocoon are either poorly understood or kept as closely guarded industrial secrets.