kinetics and mechanism of the reaction between 3-methylbenzenediazonium ions and catechol

Posted on 28 January, 201611 May, 2017 by antiox@uvigo.es

We have investigated the kinetics and mechanism of the reaction between 3-methylbenzenediazonium, 3MBD, ions and catechol (1,2-dihydroxybenzene, [CAT]) in aqueous buffer solution under acidic conditions by employing spectrometric UV/VIS. The variation of the observed rate constant, kobs, with the acidity at a given [CAT] follows an upward curve [...]

Distribution of catechol in corn oil emulsions

Posted on 3 April, 201414 May, 2017 by antiox@uvigo.es

In this work, we have evaluated the effects of emulsifier concentration on the distribution of catechol (1,2-dihydroxybenzene, CAT) in food-grade emulsions composed of stripped corn oil, acidic water, and Tween 20. Auxiliary experiments in binary stripped corn oil–water mixtures, in the absence of emulsifier, showed that CAT is both oil and water soluble (partition constant math formula = 0.34) [...]