Browsing by Author "Lopes, Paula Filomena Martins"
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- Fluorescence-based biosensor for SARS-CoV-2 detection and quantificationPublication . Duarte, Abel José Assunção; Gonçalves, Helena Maria Rodrigues; Lopes, Paula Filomena MartinsThe present disclosure relates to a method for detection of biomolecules comprising the steps of collecting a biological sample comprising an analyte at a concentration of at least 0.01 pM; exposing the collected sample to a temperature ranging from 70-100 °C; incubating the sample with Cdots previously incubated with the probe, therefore obtaining a solution; carefully homogenising the resulting solution; subjecting the solution to an excitation source for acquisition of fluorescence; determining the fluorescence shift between a negative control and the sample; wherein the Cdots are in a suspension state and the proportion of Cdots for analyte in the sample are in a ratio of at least 1:0.5; and wherein a shift of fluorescence from the negative control to the sample indicates the presence of the biomolecule. The present disclosure also relates to an apparatus for carrying out the process according to the present invention comprising a sensing unit (A), connected by an optical fiber (B) to a sample holder (C), and a LED (D) and a kit for detection of biomolecules, in particular for diagnosis of SARS-CoV-2.