Search Results - "Gouvêa, Marcos Martins"
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Is it possible to screen for milk or whey protein adulteration with melamine, urea and ammonium sulphate, combining Kjeldahl and classical spectrophotometric methods?
Published in Food chemistry (15-12-2013)“…•Milk adulteration by nitrogen-rich compounds is an important issue.•Standard (Kjeldahl) methods fail to identify adulteration by nitrogen compounds.•Classical…”
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Nanoemulsion containing 8-methoxypsoralen for topical treatment of dermatoses: Development, characterization and ex vivo permeation in porcine skin
Published in International journal of pharmaceutics (25-08-2018)“…[Display omitted] Oral therapy with 8-methoxypsoralen (8-MOP) may cause major side effects, whereas the topical treatment might not be much effective due to…”
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Isolation of mitraphylline from Uncaria tomentosa (Willd. ex Schult.) DC. barks and development of spectrophotometric method for total alkaloids determination in Cat's Claw samples
Published in Phytochemical analysis (01-03-2020)“…Introduction The usual quality control for Uncaria tomentosa (Willd. ex Schult.) DC. barks requires highly specific analytical standards and methods based on…”
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Characterization of newfound natural luminescent properties of melamine, and development and validation of a method of high performance liquid chromatography with fluorescence detection for its determination in kitchen plastic ware
Published in Talanta (Oxford) (01-06-2014)“…Experimental studies of the natural photoluminescence of melamine in aqueous solutions showed that its fluorescence intensity (at 250/365nm) was appropriated…”
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Overview of the scientific production in the Pharmacy area in Brazil: profile and productivity of researchers granted with fellowships by the National Council for Scientific and Technological Development
Published in Scientometrics (01-03-2017)“…In Brazil, the National Council for Scientific and Technological Development (CNPq) distributes productivity fellowships in research (RS) as a recognition to…”
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Determination of formaldehyde in bovine milk by micellar electrokinetic chromatography with diode array detection
Published in Food science & technology (15-06-2022)“…Formaldehyde has been illegally added to milk to reduce microbial activity and extend the shelf life of the product. In Brazil, the official method for…”
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The cleavage kinetics of hydrazide derivatives of isoniazid by HPLC-UV/DAD and its impact on activity against Mycobacterium tuberculosis
Published in Journal of chromatography. B, Analytical technologies in the biomedical and life sciences (01-01-2022)“…•The incubation of derivatives in aqueous media led to isoniazid and acylisatins.•The reactions occurred with first-order kinetics.•The cleavage rates of the…”
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Validation of a method of high performance liquid chromatography with fluorescence detection for melamine determination in UHT whole bovine milk
Published in Food control (01-05-2015)“…A method of high performance liquid chromatography with fluorescence detection (HPLC-Fluo), based on previous studies of the natural fluorescence emission of…”
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Produção científica de 2010 a 2018 sobre o controle de qualidade de espécies vegetais incluídas na Relação Nacional de Medicamentos Essenciais
Published in Vigilância Sanitária em Debate (01-11-2020)“…Introdução: O Ministério da Saúde elaborou a Relação Nacional de Plantas Medicinais de Interesse ao Sistema Único de Saúde (Renisus) para incentivar a pesquisa…”
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