抄録
Solubility and hydrolysis rate of 1-monolaurin in aqueous solutions were measured at 25°, 29.5°, and 35°. The concentration of 1-monolaurin was determined by colorimetry of glycerol formed from hydrolysed 1-monolaurin. Hydrolysis progressed very slowly and reversibly, until water was saturated with lauric acid. As a result of calculation from the temperature dependence of solubility, rate constants of forward and backward reactions, and equilibrium constant of hydrolysis, it has been found that heat of solution is ΔHs=4.04 kcal/mole, activation energies of forward and backward reactions are Ea=14.7 and E'a=10.6 kcal/mole, respectively, and enthalpy change of hydrolysis is ΔH=4.1 kcal/mole.
