ArticleSensors (Basel, Switzerland)2021
A Smartphone-Based Chemosensor to Evaluate Antioxidants in Agri-Food Matrices by In Situ AuNP Formation.
Article in Sensors (Basel, Switzerland), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 26 citations in OpenAlex.
- DiColorimetry: A smartphone application for colorimetric analysis of phenolics and antioxidant activity in vegetable oils.MethodsX · 2026Article
- Smartphones as Catalysts for Synergistic Nutrition: A New Era in Bioactive Detection, Personalization, and Food System Intelligence.Food science & nutrition · 2025Review
- New Frontiers for the Early Diagnosis of Cancer: Screening miRNAs Through the Lateral Flow Assay Method.Biosensors · 2025Review
- How to assess antioxidant activity? Advances, limitations, and applications of in vitro, in vivo, and ex vivo approaches.Food production, processing and nutrition · 2025Review
- Revolutionizing Phenolic Content Determination in Vegetable Oils: A Cutting-Edge Approach Using Smartphone-Based Image Analysis.Foods (Basel, Switzerland) · 2024Article
- The Structure of 2,6-Di-Molecules (Basel, Switzerland) · 2023Article
- Portable Device for Potentiometric Determination of Antioxidant Capacity.Sensors (Basel, Switzerland) · 2023Article
- Smartphone-Based Chemiluminescence Glucose Biosensor Employing a Peroxidase-Mimicking, Guanosine-Based Self-Assembled Hydrogel.Biosensors · 2023Article
- A Butyrylcholinesterase Camera Biosensor Tested for Carbofuran and Paraoxon Assay.International journal of analytical chemistry · 2022Article
- Smartphone-Based Chemiluminescent Origami µPAD for the Rapid Assessment of Glucose Blood Levels.Biosensors · 2021Article
Corrections and comments
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Authors and funding
8 authors at 2 institutions in 1 country.
Funding
Abstract
In recent years, there has been a continuously growing interest in antioxidants by both customers and food industry. The beneficial health effects of antioxidants led to their widespread use in fortified functional foods, as dietary supplements and as preservatives. A variety of analytical methods are available to evaluate the total antioxidant capacity (TAC) of food extracts and beverages. However, most of them are expensive, time-consuming, and require laboratory instrumentation. Therefore, simple, cheap, and fast portable sensors for point-of-need measurement of antioxidants in food samples are needed. Here, we describe a smartphone-based chemosensor for on-site assessment of TAC of aqueous matrices, relying on the antioxidant-induced formation of gold nanoparticles. The reaction takes place in ready-to-use analytical cartridges containing an hydrogel reaction medium preloaded with Au(III) and is monitored by using the smartphone's CMOS camera. An analytical device including an LED-based lighting system was developed to ensure uniform and reproducible illumination of the analytical cartridge. The chemosensor permitted rapid TAC measurements of aqueous samples, including teas, herbal infusions, beverages, and extra virgin olive oil extracts, providing results that correlated with those of the reference methods for TAC assessment, e.g., oxygen radical absorbance capacity (ORAC).
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Registered trials
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