植物灭螺剂有效成分的定量及其作用机理研究
发布时间:2018-08-04 16:42
【摘要】: 血吸虫病是世界上仅次于疟疾的第二大寄生虫病。钉螺是血吸虫的唯一中间宿主,消灭钉螺能有效控制血吸虫病的传播。Nic是常用的化学灭螺药物,但显效慢、价格高、对鱼毒性大。植物灭螺剂因有低毒、易生物降解、价廉等技术经济优势而受到关注。本文研究了新型植物灭螺剂(产品)活性成分的定量及作用机理,主要结果如下: 1.建立了HPLC法定量分析产品有效成分SX-Ⅰ的方法。方法:色谱柱,C185μm 4.6×150 mm;流动相,MeOH- ACN-NH_4AC(V/V/V,30:60:10);流速,1.0mL/min;检测,UV210 nm。结果:SX-Ⅰ线性范围为100~500μg/mL,平均回收率108.8%,变异系数(RSD)0.14%。结论:该方法简捷、准确,可用于该产品有效成分SX-Ⅰ的质量控制。 2.研究了NM和SX-Ⅰ灭螺药物对钉螺酶活性及蛋白的诱导作用。方法:HPLC检测及PAGE和SDS-PAGE电泳分析。结果:钉螺AchE、GOT的活性随浸泡时间延长,先增强后减弱;而钉螺的总的酶带数也出现先增加后减少的现象。结论:NM和SX-Ⅰ溶液灭杀钉螺,使其正常的物质代谢平衡被破坏,蛋白合成受阻,导致钉螺中毒死亡。 3.测定了不同浓度SX果实粉、AC种粉及CHSO_4复配对钉螺AchE活性的影响。方法:改进的Ellman法测定AchE对药物的灵敏度,采用L_(25)(5~3)正交试验和极差分析等方法,试验确定3因素及其5水平,测定酶活性抑制率最高的条件组合。结果:灭螺药物复配对钉螺AchE活性抑制率的最佳组合为:SX果实粉25mg/L、AC种粉16 mg/L、CUSO_42 mg/L。结论:该方法简单、有效,可用于研发对钉螺高毒、鱼低毒的新型灭螺剂提供参考。
[Abstract]:Schistosomiasis is the second largest parasitic disease in the world after malaria. Oncomelania hupensis is the only intermediate host of Schistosoma japonicum. The elimination of Oncomelania hupensis can effectively control the spread of schistosomiasis. Nic is a common chemical snail killer, but it has a slow effect, high price and high toxicity to fish. Plant molluscicides have attracted much attention because of their low toxicity, biodegradability, low price and other technical and economic advantages. In this paper, the quantitative analysis and action mechanism of new plant snail repellent were studied. The main results are as follows: 1. A HPLC method for quantitative analysis of SX- 鈪,
本文编号:2164479
[Abstract]:Schistosomiasis is the second largest parasitic disease in the world after malaria. Oncomelania hupensis is the only intermediate host of Schistosoma japonicum. The elimination of Oncomelania hupensis can effectively control the spread of schistosomiasis. Nic is a common chemical snail killer, but it has a slow effect, high price and high toxicity to fish. Plant molluscicides have attracted much attention because of their low toxicity, biodegradability, low price and other technical and economic advantages. In this paper, the quantitative analysis and action mechanism of new plant snail repellent were studied. The main results are as follows: 1. A HPLC method for quantitative analysis of SX- 鈪,
本文编号:2164479
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