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KMID : 0370219600050010045
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Yakhak Hoeji
1960 Volume.5 No. 1 p.45 ~ p.49
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Studies on the Digestive Enzyme of Cynthia roretzi V. Drasche Ⅰ
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Abstract
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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^(-3)M Mn^(++)>10^(-3)MCo^(++) 10^(-4)M Mg^(++)>10^(-4)M C^(++)>10^(-3) Sr^(++). Inhilition of metallic ion on the amylase showed following order; 10^(-2) Cd^(++)>10^(-2)M Zn^(++)>10^(-2)M Pb^(++)
3. The digestive gland eazyme inactivated at 70℃.
4. When the enzyme conacentration increase 2 times, the enzymatic activity also increase, but not proportionally.
5. The digestive 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).
(Received November 1959)
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