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高效液相色谱柱前衍生化法测定饲料中的盐霉素 总被引：11，自引：1，他引：10
以甲醇∶1 5 %醋酸水溶液 (90∶10 ,v/v)为流动相 ,2 ,4 二硝基苯肼 (DNP)为衍生剂 ,应用高效液相色谱柱前衍生化法 ,采用紫外检测方法对饲料中的盐霉素进行了测定。盐霉素标准品的保留时间为 8 99min ,饲料中盐霉素的保留时间为 8 91min。经测定盐霉素标准液的标准曲线回归方程与相关系数 ,其线性关系理想 ,重现性好。采用此方法测得的总回收率为 89 0 6% ,总变异系数为 1 73%。此方法的检测限为 1mg/kg。 相似文献
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莫能菌素和盐霉素在鸡组织中的残留分析方法研究 总被引：9，自引：0，他引：9
本文报道用高效液相色谱柱后衍生化检测肉鸡肌肉、肝脏和脂肪组织中莫能菌素和盐霉素的残留。肉鸡肌肉、肝脏和脂肪组织经异辛烷提取,用硅胶柱净化分离,洗脱液浓缩后用甲醇／水溶解。以甲醇／冰乙酸／水（943／30／30,v/v）作为流动相,香草醛为衍生剂,用RP－C18柱在可见波长520nm处检测。将莫能茵素和盐霉素分别以0．10,0．20,0．40和0．20,0．40,0．800644g/g分别添加到空白肉鸡组织中,测得莫能菌素和盐霉素在肌肉、肝脏和脂肪组织中的平均回收率分别为97．7％、91．1％、92．1％和94．1％、85．4％、90．7％,变异系数范围在2．7％－16．8％之间。用该方法测定肉鸡组织中莫能菌素和盐霉素残留的最低检测限分别为0．05μg/g0．1μg/g。 相似文献
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测定盐霉素中间体效价的新方法——分光光度法 总被引：1，自引：0，他引：1
研究了分光光度法测定发酵液中盐霉素含量的方法.检测波长为520 nm,以无水甲醇为溶剂,3%香草醛溶液为显色剂,显色温度50 ℃,显色时间15 min,盐霉素浓度在20～120 μ/mL范围内与吸光度呈线性关系,相关系数0.999 9(n=6),回收率为100.1%,RSD为0.519%(n=9). 相似文献
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盐霉素 (Salinomycin) ,分子式为C42 H70 O1 1 ,是由微生物发酵后通过生化加工生产的一种聚醚类抗生素 ,被用于防治球虫病 ,对革兰氏阳性菌有较强的抗菌作用 ,还可用作肉鸡、猪、牛的生长促进剂。盐霉素以其钠盐添加在饲料中 ,农业部《饲料药物添加剂使用规范》规定其添加量为 :鸡 5 0～70mg/kg ,猪 2 5～ 75mg/kg ,牛 1 0～ 3 0mg/kg ,马属动物忌用。盐霉素的检测方法有 :微生物法、薄层色谱法、高效液相色谱柱后衍生法等。本文提出了适用于配合饲料、浓缩饲料和预混合饲料中盐霉素测定的分光光度法。样品用甲醇溶液超声提取 ,分别过氧化… 相似文献
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为了建立测定泰拉霉素注射液中泰拉霉素含量的高效液相色谱方法,试验采用Waters XBridge C_(18)(150 mm×4.6 mm,5.0μm)色谱柱,以甲醇-乙腈-0.05 mol/L磷酸二氢钾溶液(pH值为7.0,45∶25∶30)为流动相进行洗脱,流速为1.0 mL/min,检测波长为205 nm,柱温为35℃,进样量为25μL。结果表明:泰拉霉素A和B色谱峰峰形良好,且均能达到完全分离;在0.05~5.00 mg/mL范围内线性关系良好(R~20.999);精密度和稳定性等考察结果的相对标准偏差(RSD)均小于2.0%;而加样回收率均在97%~104%之间,RSD均小于1.0%,均符合方法学要求。6份泰拉霉素注射液供试品中泰拉霉素A和B的相对含量符合要求,泰拉霉素的总含量也符合要求。说明试验建立的高效液相色谱法能够定量测定泰拉霉素的含量。 相似文献
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分光光度法测定盐霉素的含量 总被引：3，自引：1，他引：3
研究了分光光度法测定盐霉素含量的方法.检测波长为528 nm,以95%乙醇为溶剂,4%香草醛溶液为显色剂,显色温度70～74 ℃,显色时间40 min.盐霉素浓度在40～280 u/mL范围内与吸光度呈线性关系,相关系数0.999 6(n=6),回收率在100.1%～100.8%(n=5);RSD在0.8%～1.2%.本法适用于制药厂盐霉素生产的中间体质量控制. 相似文献
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建立超高效液相色谱-串联质谱法测定猪牛组织中甲基盐霉素残留量。猪、牛组织中残留的甲基盐霉素,经乙腈溶液提取,硅胶固相萃取柱净化,超高效液相色谱-串联质谱法测定,外标法定量。甲基盐霉素在5 ng/mL～250 ng/mL的浓度范围内呈现良好的线性关系,甲基盐霉素在猪、牛肌肉、肝脏、肾脏、脂肪中的检测限均为2.5μg/kg,定量限均为5.0μg/kg,猪牛肌肉、肝脏、肾脏、脂肪中5.0 ng/g～100 ng/g添加浓度范围内的回收率均值为71.9%～88.4%,批内批间RSD值均<15%。 相似文献
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王连生 《上海畜牧兽医通讯》1994,(1)
日本研制的优素精(盐霉素)是我场预防控制鸡球虫病的理想药物。东辛农场51鸡场于1993年6月16日引进2000只AA父母代种雏鸡,饲养20天后,于7月6日5时半起,饲养员不慎超剂量使用盐霉素粉,误在饲料中添加100g％盐霉素粉剂药物,预防鸡球虫病。而盐霉素预防量为500-600g/吨饲料,特殊情况可用至700g/吨饲料。按饲料中添加盐霉素100g％计算,已超过正常预防 相似文献
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Salinomycin poisoning in horses 总被引：1，自引：0，他引：1
Six cases of accidental salinomycin poisoning in horses are described. The horses were fed a contaminated ration and presented clinical signs which were extremely varied in nature and severity. However, the range of signs, including anorexia, colic, weakness and ataxia bore similarities to those described in horses poisoned with the related ionophore monensin. Other similarities became apparent in serum biochemical profiles of the clinical cases. Although ionophore toxicity is rarely reported in horses they appear to be particularly susceptible, and it should therefore be considered as a differential diagnosis of digestive upsets or locomotory disorders at establishments where ionophore-treated feeds are used therapeutically in other species. 相似文献
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Aleman M Magdesian KG Peterson TS Galey FD 《Journal of the American Veterinary Medical Association》2007,230(12):1822-1826
CASE DESCRIPTION: A 4-month-old American Paint filly was evaluated because of sudden onset of ataxia that progressed to recumbency. Five additional horses from the same and neighboring premises developed signs of poor performance, generalized weakness, ataxia, and recumbency; 2 of those horses were also evaluated. A new batch of a commercial feed supplement had been introduced to the horses' diet on each farm within the preceding 3 days. CLINICAL FINDINGS: Other than recumbency, findings of physical and neurologic examinations of the foal were unremarkable. The other 2 horses had generalized weakness and mild ataxia, and 1 horse also had persistent tachycardia. The foal had mild leukocytosis with neutrophilia, hyperglycemia, and mildly high serum creatine kinase activity. Results of cervical radiography, CSF analysis, and assessments of heavy metals and selenium concentrations in blood and vitamin E concentration in serum were within reference limits. Feed analysis revealed high concentrations of the ionophore antimicrobial salinomycin. TREATMENT AND OUTCOME: The 5 affected horses survived, but the foal was euthanized. At necropsy, a major histopathologic finding was severe vacuolation within neurons of the dorsal root ganglia, which was compatible with ionophore toxicosis. The surviving horses developed muscle atrophy, persistent weakness, and ataxia. CLINICAL RELEVANCE: In horses, ionophore toxicosis should be considered as a differential diagnosis for acute weakness, ataxia, recumbency, or sudden death. Furthermore, ionophore toxicosis should be considered as a cause of poor performance, weakness, muscle wasting, and cardiac arrhythmias in horses. Surviving horses may have impaired athletic performance. 相似文献
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Salinomycin poisoning in point-of-lay turkeys 总被引：1，自引：0，他引：1
Salinomycin poisoning occurred in a flock of 700 point-of-lay turkeys; 400 birds died over 7 days as a result of consuming feed contaminated with 50 ppm salinomycin. No gross lesions were detected. Histologic evidence of a myopathy was most readily detected in leg muscles of turkeys 5 to 7 d after ingesting salinomycin. Feeding trials were undertaken and individual susceptibility to the drug was found to vary greatly. In affected birds the plasma concentrations of creatine kinase (CK) and aspartate aminotransferase (AST) were found to be in the range of 500,000 to 2,500,000 IU/l and 9000 to 25,000 IU/l, respectively. The marked increase in the plasma activities of these enzymes preceded histological evidence of segmental muscle necrosis. 相似文献
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为了研究耐药性柔嫩艾美耳球虫产生耐药性的机理,本研究在实验室条件下,采用药物浓度递增的方法,以15 mg/kg为起始诱导浓度,对柔嫩艾美耳球虫盐霉素耐药性进行诱导。经过10次传代,获得了对60 mg/kg盐霉素耐药的柔嫩艾美耳球虫虫株。以抗球虫指数、最适抗球虫活性百分率、病变记分减少率和相对卵囊产量四项指标综合判定柔嫩艾美耳球虫对盐霉素的耐药性。其中抗球虫指数为156.92,最适抗球虫活性百分率为32.38,病变记分减少率为53.85,相对卵囊产量为28.17。结果显示,成功获得了柔嫩艾美耳球虫对盐霉素完全耐药的虫株,为进一步从分子水平研究球虫抗药性奠定基础。 相似文献
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