イカ内臓の生化学的研究-V : 澱粉分解酵素およびエステル分解酵素について

概要

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Concerning the enzymes of viscera of cuttle-fish, the previous papers of this series1), 2) dealt with the proteolytic enzymes of digestive organs. In the present investigations the enzy-matic hydrolysis of starch and buthyl-acetate by the extracts of the digestive organs were studied. The results obtained are summarized as follows: 1) The optimal pH for the starch hydrolysis by the extracts of such digestive organs as liver, blind sac and intestine, stomach, and pancreas was about 6.2 in common. The optimal temperature for the starch hydrolysis at the optimal pH by the extract of liver lay in the range of 40°-45°C; of blind and intestine, 45°-50°C; of stomach, 45°-50°C; of pancreas, 40°-45°C (Figs. 1 and 2). 2) The optimal pH for the hydrolysis of buthyl-acetate by the exract of each organ was about 7.4. The optmal temperature for the hydrolysis of buthyl-acetate at the optimal pH by the extracts of these organs was 30°C in common (Figs. 3 and 4).
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