우릉쉥이(Cynthia roretzi v. Drasche)의 소화효소에 대하여 (제1보) Amylase의 효소적 성질

Studies on the Digestive Enzyme of Cynthia roretzi V. Drasche. I . Some Enzymatic properties of Hmylase.

Some enzymatic properties of Cynthia roretzi v. (Drasche Korean : U-Rung-Shei) was studied by author and obtained the following results; Amylase 1. The optimum pH of the digestive gland amylase was 6.8-7.0 2. Activity of metallic ion on the amylase showed the following order; 10-3M Mn++>10-3Mco++> 10-4M Mg++>10-4M Ca++>10-3M Sr++. Inhibition of metallic ion on the amylase showed following order; 10-2M Cd++>10-2M Zn++>10-2M Pb++ 3. The digestive gland enzyme inactivated at 70oC. 4. When the enzyme concentration increase 2 times, the enzymatic activity also increase, but not proportionally. 5. The digestine gland amylase showed remarkably higher enzymatic activity than the intestinal amylase. 6. The digestive gland amylase from the ascidian showed remarkably higher enzymatic activity than the heptancreatic amylase from shell fish (Turbo (Batillus) Cornutus Solander).