| 四种金属离子对地图幼鱼淀粉酶活性的影响 |
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| 引用本文： | 魏东,董少杰,孙向军,梁拥军,穆祥兆.四种金属离子对地图幼鱼淀粉酶活性的影响[J].现代农业科技,2009(16):265-266,269. |
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| 作者姓名： | 魏东 董少杰 孙向军 梁拥军 穆祥兆 |
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| 作者单位： | 1. 天津农学院水产科学系水产生态及养殖重点实验室,天津,300384
2. 北京市水产科学研究所 |
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| 摘 要： | 以酶学分析的方法研究了4种金属离子Na＋、K＋、Ca2＋、Mg2＋分别在单因子和双因子条件下对地图幼鱼淀粉酶活性的影响。结果表明：在设定的浓度梯度内,单因子条件下,除Ca2＋对淀粉酶活性起强烈的抑制作用外,其余3种离子对淀粉酶活性均起促进作用,其中Mg2＋的促进作用最强。双因子条件下,Na＋和K＋互作对淀粉酶的激活作用高于2者单独作用,Na＋和Mg2＋在一定浓度下互作对淀粉酶的激活作用高于2者单独作用,而K＋和Mg2＋互作则会抑制Mg2＋的激活作用。
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| 关 键 词： | 金属离子 地图幼鱼 淀粉酶 活性 |
Effects of Four Metal Ions on Amylase Activiy in Juvenile of Astronotus Ocellatus |
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| Authors: | WEI Dong DONG Shao-jie SUN Xiang-jun LIANG Yong-jun MU Xiang-zhao |
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| Institution: | WEI Dong DONG Shao-jie SUN Xiang-jun LIANG Yong-jun MU Xiang-zhao (1 Department of Fishery Science, Tianjin Agricultural College, Key Laboratory of Aquatic Ecology and Aquaculture, Tianjin 300384 ; 2Beijing Institute of Fishery Research) |
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| Abstract: | By the way of enzyme analysis,effects of 4 kinds of metal ions(Na+,K+,Ca2+,Mg2+)on amylase activity in juveniles of Astronotus Ocellatus were studied under single factor and couple factors respectively.The results showed that all metal ions except Ca2+ could promote the activity of amylase intensively in the range of setting concentration grade under single factor.In them,the promoting effect of Mg2+ was the most intensive.Under couple factors,the activation of the interaction between Na+ and K+ on amylase activity was higher than the activation of Na+ or K+ individually.In contrast,the activation of the interaction between Na+ and Mg2+,both in certain concentration,on amylase activity was higher than the activation of Na+ or Mg2+ individually.However,the interaction between Mg2+ and K+ could restrain the the activation of Mg2+ on amylase activity. |
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| Keywords: | metal ion juvenile of Astronotus Ocellatus amylase activity |
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