Hussana Chaman, Seham J F Alanazi, Muhammad Umer Farooq, Muhammad Nasir, Silvana Andreescu, Akhtar Hayat
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Design of a Nano-Functionalized Lab-on-Paper Optical Sensing Platform for On-Site Detection of Ascorbic Acid in Natural Fruit Juices.
The optical detection of ascorbic acid was carried out using a quick and simple sensor-based approach designed by adsorbing molybdenum disulfide and silver-based polyoxometalates (MoS2-Ag-POM) on cellulose nanopaper strips. This detection method for the analysis of ascorbic acid does not require any signal-generating dye. MoS2 and Ag-POM were prepared by a hydrothermal procedure. The material and modified nanopaper surface were characterized by Fourier transform infrared (FT-IR) spectroscopy analysis, dynamic light scattering (DLS), field emission scanning electron microscopy (FE-SEM), UV absorption spectra, and X-ray diffraction (XRD). The MoS2-Ag-POM composite was embedded on the cellulose nano-enabled paper sensors by incorporating silica sol-gel. The modified cellulose nano-enabled paper sensors turned sky blue when exposed to ascorbic acid. The analytical quantification based on these modified cellulose nano-enabled paper sensors was performed by using a Capsure Pantone colorimetric reader. The cellulose nano-enabled paper sensor showed a strong linear correlation between light reflectance values (LRV) and the level of analyte ranging from 0.19 to 780 µM and presented a detection limit of 0.097 µM. The designed cellulose nano-enabled paper sensor was affordable, quick, and target-selective for ascorbic acid analysis in food products like fruit juice samples.
期刊介绍：
This journal is devoted to publishing the highest quality innovative papers in the fields of biochemistry and biotechnology. The typical focus of the journal is to report applications of novel scientific and technological breakthroughs, as well as technological subjects that are still in the proof-of-concept stage. Applied Biochemistry and Biotechnology provides a forum for case studies and practical concepts of biotechnology, utilization, including controls, statistical data analysis, problem descriptions unique to a particular application, and bioprocess economic analyses. The journal publishes reviews deemed of interest to readers, as well as book reviews, meeting and symposia notices, and news items relating to biotechnology in both the industrial and academic communities.
In addition, Applied Biochemistry and Biotechnology often publishes lists of patents and publications of special interest to readers.
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