To search for more potent and less toxic antifungal agents,Four 2(2,4Diflurophenyl)1(4alkylpiperazine1yl)3(1,2,4triazole1yl)2propanols were designed and synthesized,and their antifungal activities in vitro were determ...To search for more potent and less toxic antifungal agents,Four 2(2,4Diflurophenyl)1(4alkylpiperazine1yl)3(1,2,4triazole1yl)2propanols were designed and synthesized,and their antifungal activities in vitro were determined.All title compounds exhibited mild activities against yeast.展开更多
文摘To search for more potent and less toxic antifungal agents,Four 2(2,4Diflurophenyl)1(4alkylpiperazine1yl)3(1,2,4triazole1yl)2propanols were designed and synthesized,and their antifungal activities in vitro were determined.All title compounds exhibited mild activities against yeast.
文摘建立了动物源性食品中6种玉米赤霉醇类化合物和氯霉素残留量的复合免疫亲和柱净化、液相色谱-串联质谱（LC-MS / MS）分析方法。样品（鱼肉、肝脏、牛奶、蜂蜜）经β-葡萄糖苷酸/硫酯酸复合酶酶解后用乙醚提取，提取液经氮气吹干，残渣用50％乙腈溶液复溶后过滤，滤液用 PBS 溶液稀释，经复合免疫亲和柱富集净化后供 LC-MS /MS 检测，采用多反应监测（MRM）模式进行定量和定性分析，外标法定量。结果表明，7种目标物的检出限（ S / N ＝3）在0.04~0.10μg / kg 之间，线性相关系数（R2）≥0.9990，平均回收率为70.9％~95.6％，相对标准偏差为2.0％~11.8％。该方法灵敏度高、重现性好，适用于动物源性食品中痕量玉米赤霉醇类药物和氯霉素残留的测定。
