ACID AND ALKALINE-PHOSPHATASES ACTIVITIES IN THE HARD BROWN HEAD PORTION (HBHP) OF SILK WORM (BOMBYX-MORI L.) LARVAE

Authors
MAJUMDER SK DUTTA RN KAR R BHATTACHARYA SS GHOSH MK GHOSH JK
Citation
Sk. Majumder et al., ACID AND ALKALINE-PHOSPHATASES ACTIVITIES IN THE HARD BROWN HEAD PORTION (HBHP) OF SILK WORM (BOMBYX-MORI L.) LARVAE, Journal of advanced zoology, 18(2), 1997, pp. 113-115
Citations number
16
Journal title
Journal of advanced zoology → ACNP
ISSN journal
02537214
Volume
18
Issue
2
Year of publication
1997
Pages
113 - 115
Database
ISI
SICI code
0253-7214(1997)18:2<113:AAAAIT>2.0.ZU;2-B
Abstract
A preliminary study on acid and alkaline phosphatases in Hard Brown He ad Portion (hbhp) of fifth age larvae of silkworm, Bombyx mori against , synthetic substrate para-nitro phenyl phosphate disodium salt (PNPP) showed that acid phosphatase (EC 3.1.3.2) activity is larger than alk aline phosphatase (EC3.1.3.1) in hbhp. Both acid and alkaline phosphat ases activities had the highest peak in 5th day of the last instar lar vae. The acid phosphatase activity in the hbhp displayed first order r eaction until 37.5 degrees C for at least 30 minutes. Reaction of this enzyme was studied over 20-50 degrees C due to its thermostability.