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http://dx.doi.org/10.12925/jkocs.2008.25.1.6

Catalytic Hydrolysis of p-Nitrophenyl Palmitate in Aqueous Dipalmitoyl Phosphatidyl Choline Bilayer Membrane  

Kim, Ki-Jun (Dept. of Chemical Engineering, Dae-Jin University)
Lee, Hoo-Seol (Dept. of Chemical Engineering, Dae-Jin University)
Publication Information
Journal of the Korean Applied Science and Technology / v.25, no.1, 2008 , pp. 48-51 More about this Journal
Abstract
Dipalmitoyl phosphatidyl choline and p-nitrophenyl palmitate were directly sonicated in acidic water for 6 minutes to give clear stock solutions. The catalytic hydrolysis of p-nitrophenyl palmitate was studied at $30-50^{\circ}C$ in the presence of unilamellar vesicle and mixture of unilamellar and multilamellar aggregates. The difference of reaction rate between unilamellar and multilamellar was observed. The rate of unilamellar reaction compared to the rate of mixture reaction showed more catalytic effect. The phase transition temperature of vesicle was measured at $37-44^{\circ}C$.
Keywords
dipalmitoyl phosphatidyl choline; p-nitrophenyl palmitate; catalytic hydrolysis; vesicle; unilamellar; multilamellar; phase transition;
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