...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Inland water biology >Effect of Phenol on the Activity and Temperature Characteristics of Peptidases in Chironomid Larvae at Different pH Values
【24h】

Effect of Phenol on the Activity and Temperature Characteristics of Peptidases in Chironomid Larvae at Different pH Values

机译：Effect of Phenol on the Activity and Temperature Characteristics of Peptidases in Chironomid Larvae at Different pH Values

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相关主题

摘要

The effect of phenol (Ph, 0.25 mmol/L) on the activity and temperature dependence of casein- and hemoglobin-lytic peptidases functioning in the whole organism of chironomid larvae Chironomus sp. within the temperature range of 0-70 degrees C at different pH values (3.0, 5.0, and 7.4) is studied. The temperature optimum of the studied peptidases of chironomid larvae corresponds to 40 degrees C. Under the influence of phenol, the activity of casein-lytic peptidases increases more significantly at 20 degrees C and pH 5.0 (by a factor of 3.3) and that of hemoglobin-lytic peptidases increases more significantly at pH 3.0 (by a factor of 3.5). The effect successively decreases from pH 3.0 up to pH 7.4. under both temperatures. In the presence of phenol, the shape of the curves of the temperature dependence and the Q(10) values transform most significantly in the zone of high temperatures. The values of activation energy (E-act) of the process of hydrolysis of casein and hemoglobin-lytic peptidases in the zone of low and high temperatures are different. In the presence of phenol, E-act values of the process of hydrolysis of casein casein-lytic peptidases at pH 7.4 increase; at pH 5.0 they decreases in the zone of high temperatures. The values of E-act of the process of hydrolysis of hemoglobin-lytic peptidases decrease in most cases. The mechanisms of the influence of phenol on peptidase activity and digestive processes in benthivorous fish feeding on chironomid larvae are discussed.

著录项

获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号