10 research outputs found

    Patients? perceptions upon student-based care followed by supervision

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    Please help populate SUNScholar with the full text of SU research output. Also - should you need this item urgently, please send us the details and we will try to get hold of the full text as quick possible. E-mail to [email protected]. Thank you.Geneeskunde en GesondheidswetenskappeSentrum vir Gesondheidsberoepe Onderwy

    A modified sample preparation for acrylamide determination in cocoa and coffee products

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    A modified sample preparation for acrylamide determination in difficult matrices such as cocoa and coffee by a liquid chromatography-tandem mass spectrometry method is presented in this work. For the sample pretreatment, different solvents, purification steps, and solid-phase extraction cartridges were evaluated. The analyses were carried out on a µ-Bondapak C18 column using acrylamide-D3 as internal standard. For identification and confirmation of acrylamide, relative retention time and two diagnostic ions were monitored. Good performance of the method was achieved by introducing a protein precipitation step with Carrez I and II solutions and a liquid-liquid extraction with ethyl acetate in combination with solid-phase extraction during the sample clean-up. A limit of detection of 10 µg/kg, a limit of quantitation of 20 µg/kg, mean recoveries ranging from 93 to 99%, coefficients of variation of 3.4% for repeatability, and from 1.7 to 10.8% for within-laboratory reproducibility were obtained during a laboratory validation procedure.</p

    Determination of acrylamide levels in selected foods in Brazil

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    Selected carbohydrate-rich foods available on the Brazilian market (111 samples representing 19 product categories) were analysed for acrylamide content using a liquid chromatography-tandem mass spectrometry method. A limit of detection of 10 µg kg</p

    Contribution of selected foods to acrylamide intake by a population of Brazilian adolescents

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    Acrylamide dietary intakes from selected foods are estimated in this work for Brazilian adolescents from S+úo Paulo State. The exposure assessment was carried out by combining levels of acrylamide in foods determined analytically by an accredited LC</p
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