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以土霉素处理废水灌溉玉米和谷子试验结果表明 ,农作物适量灌溉土霉素处理废水可缓解农业用水短缺 ,增加作物产量 ,且土霉素处理废水污灌未对种植土壤造成污染 ,并具改良土壤和增加肥效的作用。 相似文献
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动物性食品中土霉素、金霉素和四环素检测方法研究进展 总被引:5,自引:0,他引:5
四环素类药物是一类广谱抗菌素,有良好的杀菌抑菌作用,经常作为饲料添加剂用于畜牧及水产养殖中,常见的四环素类药物包括土霉素、金霉素、四环素。近年来,一些不法分子为了经济效益,常滥用这类药物,导致动物性食品中土霉素、金霉素、四环素大量残留,严重影响公众健康。动物性食品中土霉素、金霉素、四环素的检测方法主要有高效液相色谱法、免疫学方法、毛细管电泳法和微生物学方法,其中高效液相色谱法应用最广。 相似文献
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土霉素混悬剂的研制及药物质量指标测定 总被引:1,自引:0,他引:1
为了研制优质的土霉素混悬剂,试验采用单因素试验及正交试验法,筛选了土霉素混悬剂的理想配方,以土霉素为主药, 以蒸馏水为溶媒,应用分散法成功研制了土霉素混悬型制剂,并评定了混悬剂的质量指标.试验结果表明,测定的4种不同浓度混悬剂样品的平均回收率为100.62%,RSD为0.48%,静置3h的沉降体积比均大于0.9,且混悬剂稳定性好,不易结块,易于重分散. 相似文献
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研制以盐酸土霉素为主药的泡腾片,并建立其品质控制方法。将盐酸土霉素和柠檬酸、碳酸钠等组分制成干燥品,经酸碱分别制粒、整粒、混合后压片,并对其品质控制进行研究,以紫外分光光度法测定盐酸土霉素含量。结果表明,所制制剂pH在4.5~5.0之间,平均每片发泡量12.63 mL崩解时间均在5 min内,片质量差异均在±5%以内。盐酸土霉素的紫外最大吸收波长为274 nm,在5~25μg/mL内质量浓度(C)与吸光度(A)线性关系良好,平均回收率为95.07%(RSD=0.6%)。所研制的盐酸土霉素泡腾片符合要求。 相似文献
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采用紫外分光光度法和高效液相色谱法测定盐酸土霉素可溶性粉中土霉素的含量。紫外分光光度法试验表明,用0.01 mol/L盐酸溶液作参比液,以268 nm为测定波长,土霉素在4~32μg/mL范围内吸光度与浓度呈良好的线性关系,相关系数r=0.9999,平均回收率(n=5)为101.04%,RSD=1.02%。高效液相色谱法试验表明,以0.05 mol/L草酸铵溶液-二甲基甲酰胺-0.2 mol/L磷酸氢二铵溶液(75∶20∶5)为流动相,以280 nm为检测波长,土霉素在0.02~0.14mg/mL范围内浓度与峰面积线性关系良好,相关系数r=0.9999,平均回收率(n=5)为100.52%,RSD=0.25%。紫外分光光度法、高效液相色谱法与抗生素微生物检定法比较,结果基本一致。 相似文献
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在14±2℃水温条件下,连续5d对红鳍东方鲍口灌剂量为100mg/kg的土霉素,采用高效液相色谱法测定了停药后血清、肌肉、肝脏组织中的药物含量、消除速率常数和消除半衰期,提出了该温度下的休药期。研究表明,在停药2d后红鳍东方鲍血清和肌肉中的药物浓度达到峰值,分别为1.092μg/ml和0.806μg/g;停药3d后肝脏内土霉素浓度达到峰值1.229μg/g,土霉素在血清、肌肉和肝脏中的消除半衰期分别为23.8、22.4和26.8d;土霉素在红鳍东方纯肌肉组织中降到0.1μg/g残留限量的时间为58d,降到0.05μg/g残留限量的时间为81d。 相似文献
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The effect of different dietary inclusion levels of rutin (a flavonoid) on some liver enzyme activities and oxidative stress indices in rainbow trout,Oncorhynchus mykiss (Walbaum) exposed to Oxytetracycline 下载免费PDF全文
The study was conducted using a completely randomized design with five treatments each with three replicates. In each treatment, 30 fish (10 per replicate) with an average body weight of 30 ± 0.6 g were randomly allocated to 60‐L tanks. Treatments consisted of a control (a diet without rutin and oxytetracycline (OTC)), an OTC treatment (a diet free from rutin and containing 75 mg kg?1 body weight OTC) and the (OTC + rutin) treatments including diets with different levels of rutin, 500 (R‐500 + OTC), 1000 (R‐1000 + OTC) and 2000 (R‐2000 + OTC) ppm and 75 mg kg?1 body weight per day OTC which were fed to fish for 28 days. The aspartate aminotransferase (AST) and alanine aminotransferase (ALT) activities in the blood serum after the OTC treatment were significantly (P < 0.05) higher than in the control. After the three (OTC+rutin) treatments, the AST and ALT activities were not significantly different from the control. The level of glucose in the blood serum was significantly lower (P < 0.05) in all treatments as compared to the OTC treatment. Superoxide dismutase (SOD) and catalase (CAT) activities in red erythrocyte lysates were significantly (P < 0.05) reduced after OTC treatment in comparison with the control. After the three (OTC+rutin) treatments, the values of these indices were significantly (P < 0.05) higher than the OTC treatment, in particular for the R‐1000 + OTC treatment. It seems that rutin, as a non‐enzymatic inhibitor, is capable of preventing damage to the liver tissue and reducing oxidative stress. 相似文献
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以高效液相色谱法作为血液中土霉素含量的检测方法,研究了单次静注土霉素(20mg/kg)后在正常和沙门氏菌内毒素引起发热猪体内的动力学行为。结果表明,土霉素在正常猪体内适合无吸收三室开放模型,而在发热猪体内适合无吸收二室开放模型,发热改变了土霉素在猪体内的动力学行为。在正常猪,其消除半衰期(t0.5β)和总体消除率(CLB)分别为6.40h和0.174L/kg·h,在发热猪,则分别为6.13h和0.109L/kg·b.以1μg/ml的土霉素血清浓度为最小有效浓度,求出的维持有效浓度时间为20.34h和26.42h。并根据求出的药动学参数,推荐了一个给药方案。 相似文献