The reactant in an enzyme-catalyzed reaction is called a substrate. Enzyme inhibitors cause a decrease in the reaction rate of an enzyme-catalyzed reaction. Computed Properties of C11H3FeO. In heterogeneous catalysis, catalysts provide a surface to which reactants bind in a process of adsorption. Introducing a new discovery about 1273-86-5, Name is Ferrocenemethanol
Integrated amperometric biosensors for the determination of l-malic and l-lactic acids were developed by coimmobilization of the enzymes l-malate dehydrogenase (MDH) and diaphorase (DP), or l-lactate oxidase (LOX) and horseradish peroxidase (HRP), respectively, together with the redox mediator tetrathiafulvalene (TTF), on a 3-mercaptopropionic acid (MPA) self-assembled monolayer (SAM)-modified gold electrode by using a dialysis membrane. The electrochemical oxidation of TTF at +100 mV (vs. Ag/AgCl), and the reduction of TTF+ at -50 mV were used for the monitoring of the enzyme reactions involved in l-malic and l-lactic acid determinations, respectively. Experimental variables concerning the biosensors composition and the detection conditions were optimized for each biosensor. Good relative standard deviation values were obtained in both cases for the measurements carried out with the same biosensor, with no need of cleaning or pretreatment of the bioelectrodes surface, and with different biosensors constructed in the same manner. After 7 days of continuous use, the MDH/DP biosensor still exhibited 90% of the original sensitivity, while the LOX/HRP biosensor yielded a 91% of the original response after 5 days. Calibration graphs for l-malic and l-lactic were obtained with linear ranges of 5.2 × 10-7 to 2.0 × 10-5 and 4.2 × 10-7 to 2.0 × 10-5 M, respectively. The calculated detection limits were 5.2 × 10-7 and 4.2 × 10-7 M, respectively. The biosensors exhibited a high selectivity with no significant interferences. They were applied to monitor malolactic fermentation (MLF) induced by inoculation of Lactobacillus plantarum CECT 748T into a synthetic wine. Samples collected during MLF were assayed for l-malic and l-lactic acids, and the results obtained with the biosensors exhibited a very good correlation when plotted against those obtained by using commercial enzymatic kits.
Integrated multienzyme electrochemical biosensors for monitoring malolactic fermentation in wines
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Reference：
Iron Catalysis in Organic Synthesis | Chemical Reviews,
Iron Catalysis in Organic Synthesis: A Critical Assessment of What It Takes To Make This Base Metal a Multitasking Champion