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Your search keyword '"Marina G. Capeletto"' showing total 2 results
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2 results on '"Marina G. Capeletto"'

1. A RENEWABLE CATALYST FOR A RENEWABLE CHEMICAL: GRAM-SCALE CONVERSION OF FURFURAL TO FURFURYL ALCOHOL BY THE CARROT (Daucus carota)

Author

Alvaro T. Omori, Marina G. Capeletto, Daniela Y. Yamamoto, and Ronaldo E. de Oliveira Filho

Subjects
furans, biomass, biocatalysis and sustainable process, Chemistry, QD1-999
Abstract

The bioconversion of furfural to furfuryl alcohol using only carrot bits in water at room temperature and ambient pressure is presented. This reaction led to the bioreduction of furfural with 99% conversion and 99% selectivity to an alcohol. This simple and “fully” green process may represent an alternative to classic hydrogenation processes. Also, without work-up procedure, we demonstrate the aqueous solution can be submitted to microwave irradiation to obtain 4-hydroxy-2-cyclopentenone.

Published
2020
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2. Oxireduction’s Studies of Arytetralone and Aryltetralol Mediated by Rhodotorula sp

Author

Marina G. Capeletto, Graziela G. Bianco, Luiz S. Longo, and Wagner L. Batista

Subjects
chemistry.chemical_compound, Chromatography, Column chromatography, chemistry, Yield (chemistry), Substituent, Yeast, Rhodotorula sp
Abstract

The (±)-1 and (±)-2 were submitted to reactions with Rhodotorula sp. This yeast was able to reduce αtetralones with a substituent in 4-position. 8 The results are shown in Table 1. The bioreduction reactions occur with Rhodotorula sp, but the amount formed wasn’t sufficient to be isolated, except in YPD. A higher yield was found in 24 h (Entry 4). The formation of both alcohols, cis-2 and trans-2, occurred, except in 44 h in PBS (Entry 2). The bio-oxidation reaction of (±)-2 occurs and it seems more promising than bioreduction because the isolation of 1, using column chromatography, was possible.

Published
2013

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