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Performance characteristics of high performance liquid chromatography, first order derivative UV spectrophotometry and bioassay for fluconazole determination in capsules
(Sociedade Brasileira de Química, 2012-01-01)
The bioassay, first order derivative UV spectrophotometry and chromatographic methods for assaying fluconazole capsules were compared. They have shown great advantages over the earlier published methods. Using the first ...
Standardization of bioassays for monitoring resistance to insecticides in Aedes aegypti
(2005-12-01)
Since the reintroduction of Aedes aegypti in Brazil in the 1980s, insecticide use for its control is routine. The chemical control efficacy is threatened by vectors developing resistance to insecticides. The World Health ...
Performance characteristics of bioassay, UV-spectrophotometry and high performance liquid chromatographic determination of sparfloxacin in tablets
(2001-01-01)
The microbiological bioassay, the UV-spectrophotometry and the high performance liquid chromatography (HPLC) methods for assaying sparfloxacin in tablets were compared. The accuracy, repeatability, and precision of each ...
Detection of Toxoplasma gondii oocysts in environmental samples from public schools
(Elsevier B.V., 2010-07-15)
The number of Toxoplasma gondii oocysts that can be found in random environmental samples is probably low; in addition, these cysts may be confused with Hammondia spp. and Neospora spp. oocysts. The aim of the present work ...
Performance characteristics of bioassay UV-spectrophotometry and high perfomance liquid chromatographic determination of gatifloxacin in tablets
(Sociedade Brasileira de Química, 2008-01-01)
The microbiological bioassay, UV-spectrophotometry and HPLC methods for assaying gatifloxacin in tablets were compared. Validation parameters such as linearity, precision, accuracy, limit of detection and limit of quantitation ...
Development and validation of a microbiological agar assay for determination of orbifloxacin in pharmaceutical preparations
(2011-09-01)
Orbifloxacin is a fluoroquinolone with broad-spectrum antimicrobial activity, and belongs to the third generation of quinolones. Regarding the quality control of medicines, a validated microbiological assay for determination ...
Detection of Toxoplasma gondii in the milk of experimentally infected Wistar female rats
(Universidade Estadual Paulista (Unesp), Centro de Estudos de Venenos e Animais Peçonhentos (CEVAP), 2010-01-01)
The milk of experimentally infected rats was investigated for the presence and possible transmission of Toxoplasma gondii. Wistar (Rattus norvegicus) female rats were divided into three groups and orally inoculated with ...
Sediment toxicity assessment of Guanabara Bay, Rio de Janeiro, Brazil.
(Coastal Education & Research Foundation, 2009-01-01)
Guanabara Bay (GB) comprises of estuarine and marine environments of high ecological and socio-economic relevance, together with port, industrial and urban areas. The anthropogenic activities produce environmental impacts, ...
Development and validation of a stability-indicative agar diffusion assay to determine the potency of linezolid in tablets in the presence of photodegradation products
(Elsevier B.V., 2010-08-15)
Linezolid (LNZ) is one of the first commercially available (and most widely used) oxazolidinone antibiotics. This study describes the development and validation of a microbiological assay, applying the cylinder-plate method, ...