Biosensors for determination of total and natural antioxidant capacity of red and white wines: comparison with other spectrophotometric and fluorimetric methods

Methods for Total Antioxidant Activity Determination: A Review

“…The biosensors were used for the determination of antioxidant capacity in wines, the results being consistent with those obtained by spectrophotometry [112,113] or in orange juices, by biosensors based on screen-printed electrodes [114]. For the analysis of commercial red wines, a multi-walled nanotube ionic liquid electrode with immobilized tyrosinase was used [113].…”

Electrochemical DNA-sensor for evaluation of total antioxidant capacity of flavours and flavoured waters using superoxide radical damage

“…The immobilization of the enzyme can be carried out via short-chain thiol modified gold electrodes, long-chain thiol (mercaptoundecanoic acid), mixed-thiol, long-chain mixed thiol (mercaptoundecanoic acid/mercaptoundecanol) and hemin modified electrode (McNeil et al, 1995;Gobi and Mizutani, 2000;Ignatov et al, 2002). However, the performance of many of these types of devices is interfered by hydrogen peroxide, uric acid and some communication interference between the protein and the electrode (Chen et al, 2000;Beissenhirtz et al, 2004;Endo et al, 2002;Campanella et al, 2004;Emregül, 2005). The protective effect of antioxidants at a cellular level could only be achieved by monitoring the DNA integrity (Barroso et al, 2011).…”

New Electrodes Based on Garlic for the Inhibition of the Free Radicals Effects

“…Several amperometric biosensors have already been proposed for antioxidant capacity determination [11][12][13][14]. Most of them are based on the amperometric detection of H 2 O 2 , resulting from the catalyzed dismutation of superoxide radicals (O 2 -. ) in presence of superoxide dismutase.…”