A photoelectrochemical enzyme biosensor based on functionalized hematite microcubes for rutin determination by square-wave voltammetry

Recent Advances in the Development of Oxidoreductase-Based Biosensors for Detection of Phenolic Antioxidants in Food and Beverages

“…Juices, wines, and tea infusions are routinely diluted with distilled water or buffer before use. − There are varied dilutions that have been performed; for instance, for wines, dilutions as high as 1:100 to as low as 1:5 are stated in the literature. On the other hand, many researchers have reported the use of neat samples of beverages such as wines, tea, and fruit juices without any pretreatment step. , The excellent agreement between the values obtained from biosensors and HPLC analysis suggests that the effect of the sample matrix is insignificant during the proposed biosensing analysis. In contrast, for solid samples, the quantitative analysis of antioxidants is normally achieved by preparing and analyzing sample extracts.…”

“…Palladium nanoparticles have been used to improve the electrocatalytic properties. A photoelectrochemical biosensor constructed by Mattos and team consisted of nanostructured hematite microcubes functionalized with palladium nanoparticles . The functionalization led to an enhancement in the photoelectric signals.…”

“…Likewise, anthocyanins are found in cherries and berries . Rutin, gallic acid, and chlorogenic acid are some examples of phenolic dietary antioxidants that are widespread in various food items. , …”

“…4 Rutin, gallic acid, and chlorogenic acid are some examples of phenolic dietary antioxidants that are widespread in various food items. 5,6 Conventional methods of estimating phenolic content in food and beverage samples include the Folin−Ciocalteau (F− C) assay, high-performance liquid chromatography (HPLC), spectrophotometric analysis, capillary electrophoresis, and electroanalytical methods. The F−C assay spectroscopically determines the transfer of electrons from phenolic compounds to phosphotungstic/phosphomolybdic acid complexes.…”

Portable Wireless Intelligent Electrochemical Sensor for the Ultrasensitive Detection of Rutin Using Functionalized Black Phosphorene Nanocomposite

“…Therefore, it is of great significance to establish a fast and portable method for detecting the content of rutin. Different techniques have been reported for the determination of rutin such as high-performance liquid chromatography (HPLC) [ 3 , 4 ], chemiluminescence [ 5 ], capillary electrophoresis [ 6 ], and the electrochemical method [ 7 , 8 , 9 , 10 , 11 ]. Among them, electrochemical methods have generated great research interest over the past decade due to the merits of the fast response, high sensitivity, and minimal sample requirements.…”