醗酵乳酸の利用に關する研究(第6報) : (1)乳酸メチルエステルの加水分解

概要

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1) Procedure using acid as catalyst. At the low concentration of methyl lactate (0.9946 M), the hydrolysis follows the first order reaction until 60% of the ester is hydrolyzed. At the higher concentratons of the ester, however, the order of the reaction rises. From various velocity constants of the ester (0.9946 M) at various temperatures (30℃, 40℃ and 45℃) the energy of activation is calculated.2) Procedure without catalyst.The rise of reaction temperature accelerates the velocity of the reaction. There is no particular difference of time to attain the equilibrium when the ester is under 5 M concentration, and it takes about 9 hr in the boiling water bath. At 7 M concentration, however, it takes approximately twice the time of 5 M. These reaction show the autocatalytic action of lactic acid produced, and the efficiency is notably high.
社団法人日本生物工学会の論文
1955-09-15