LUO Ting-shun, MA Fang-fang, GAO Meng-ting, et al. Enzymatic Process of Ethanol Extract from Periplaneta americana by Papain[J]. Chinese journal of experimental traditional medical formulae, 2012, 18(8): 15-17.
LUO Ting-shun, MA Fang-fang, GAO Meng-ting, et al. Enzymatic Process of Ethanol Extract from Periplaneta americana by Papain[J]. Chinese journal of experimental traditional medical formulae, 2012, 18(8): 15-17. DOI: 10.13422/j.cnki.syfjx.2012.08.004.
Objective:To study on enzymatic technology of ethanol extract from Periplaneta americana by papain and screen out optimum enzymatic technology.Method: Taking degree of hydrolysis as index
effect of enzymatic temperature
enzymatic time
pH
the amount of papain and substrate concentration on papain were investigated by single factor experiment and orthogonal test.Result: Optimum enzymatic technology conditions of papain was determined as follows:enzymatic temperature 55 ℃
enzymatic time 3 h
pH 7.0
the amount of papain 8 400 U·mg-1
substrate concentration 0.5%.Under these conditions
degree of hydrolysis could reach to 9.87%.Molecular weight of sample were smaller and molecular weight distribution were wider after enzymolysis.Conclusion: This optimized method was stable
easy to operate
and provided basis and foundation to further study of P.americana.