酿酒酵母对锦鲤鱼体内铜、汞、镉三种重金属排除效果的比较研究

Effect of Saccharomyces cerecisiae on purification of copper,mercury and cadmium in organ of Cyprinus carpioi

通过对锦鲤鱼幼鱼进行铜、汞、镉的单一重金属积累实验和排除实验,研究了以酿酒酵母作为饲料添加剂对锦鲤鱼内脏、鳃和肉的排除作用效果。结果表明,酿酒酵母对锦鲤鱼体内脏、鳃和肌肉中积累的铜、汞、镉均有排除作用,其中对Cu的排除效果比较为肌肉>鳃>内脏;对Hg的排除效果比较为内脏>肌肉>鳃;对Cd的排除效果比较为肌肉≈内脏>鳃。综合比较得出,酿酒酵母对鱼体内Cd和Hg的排除效果显著,可以排除鱼肉中绝大多数的重金属离子。对Cu的排除效果相对减弱。酿酒酵母对鱼体内的重金属排除效果主要体现在内脏和肌肉中,而对鱼鳃的排除效果不明显。

By exposing fish（ Cyprinus carpioi） to the single heavy metal solutions, including copper, mercury and cadmium, Saccharomyces cerecisiae was selected as feeds additive to investigate the effects of visceral, gill and muscle purification.The results showed that Saccharomy cerecisiae had an effect on the purification of the three kinds of heavy metals accumulated in visceral,gill and muscle.The effect of purification on copper was：muscle 〉 gill 〉 visceral,the effect of purification on mercury was.visceral 〉 muscle 〉 gill,the effect of purification on cadmium was：muscle≈ visceral 〉 gill.In summary, Saccharornyces cerecisiae had a good effect on purification of cadmium and mercury, it can remove most of heavy metal ion accumulated in muscle and become relative weaker on the purification of copper.Saccharomyces cerecisiae had main effect on visceral and muscle, but little effect on gill.