Determination of the wine preservative sulphur dioxide with cyclic voltammetry using inkjet printed electrodes

Scientific Opinion on the re‐evaluation of sulfur dioxide (E 220), sodium sulfite (E 221), sodium bisulfite (E 222), sodium metabisulfite (E 223), potassium metabisulfite (E 224), calcium sulfite (E 226), calcium bisulfite (E 227) and potassium bisulfite (E 228) as food additives

“…A method for the selective extraction of free and total sulfites from muscle foods (i.e. shrimps) and the following determination by a voltammetric sensor was reported by Schneider et al (2014). The proposed method was based on the eletrocatalytic oxidation of sulfites at modified glassy carbon electrode fabricated by immobilising 9 μg of acetylferrocene on the surface of the electrode along with 35 μg of carbon black to improve the electron transfer within poly(vinyl butyral) membrane matrix.…”

Ultra-high performance liquid chromatographic determination of antioxidants in teas using inkjet-printed graphene–polyaniline electrode

“…An inkjet printing has been demonstrated to be an attractive method for the electrode modification providing low cost, high production speed, selectivity, and compatibility with a wide range of materials and substrates. This technique is able to precisely deposit very small droplets of modifier in a picoliter level (2-12 pL) to prepare ultra-thin film onto the surface of substrate with a high production speed and a high pattern resolution [27][28][29][30][31][32][33]. For another strategy to improve the electrode surface area in the electrochemical system, an electrode modification using a noticeable nanomaterial has played an important role to enhance the electrochemical sensitivity of the sensors.…”

Fast Electrochemical Detection of Non-Desirable Aging in Bottled White Wine

“…In this sense different amperometric sensors are developed to measure sulfur dioxide (the most important wine preservative) or different phenols in model wine [1][2][3][4][5][6][7][8][9][10] . However the goal is not achieved due the high complexity of different wines.…”

“…Our aim is to develop a very easy, fast and inexpensive way to only determine if wine has suffered undesirable aging or not. Electrochemical methods like cyclic voltammetry have been used for determining some characteristics of wine like antioxidant capacity of some phenols or the sulfite concentration 10,12,[18][19][20] . However, at our knowledge, these methods have not been used to measure some aging effects on wine.…”