Eight kinds of metal ions could accelerate ChA hydrolysis process at the concentration of 1 mM and 0.1 mM, while the presence of most metal ions could inhibit ChB action except for Co2+.

• 8种金属离子在1 mM和0.；1 mM下；对ChA的酶解均有一定的促进作用; 对ChB的活性有一定的抑制作用(Co2+除外)。