Search Results - "Teofilo, Reinaldo F."

Direct conversion of glucose to 5-hydroxymethylfurfural using a mixture of niobic acid and niobium phosphate as a solid acid catalyst by Catrinck, Mariana N., Ribeiro, Emerson S., Monteiro, Robson S., Ribas, Rogério M., Barbosa, Márcio H.P., Teófilo, Reinaldo F.

“…[Display omitted] •HMF was produced by solid acid-catalyzed glucose in an aqueous medium.•Nb2O5·nH2O, NbOPO4·nH2O and a mixture of both was used as a solid…”
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Development and optimization of pH-responsive PLGA-chitosan nanoparticles for triggered release of antimicrobials by Pola, Cícero C., Moraes, Allan R.F., Medeiros, Eber A.A., Teófilo, Reinaldo F., Soares, Nilda F.F., Gomes, Carmen L.

“…•PLGA/CHIT/TCIN nanoparticles were successfully produced and optimized.•PLGA/CHIT/TCIN optimized composition was 4% of TCIN and 6.75% of CHIT.•PLGA/CHIT…”
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Comprehensive new approaches for variable selection using ordered predictors selection by Roque, Jussara V., Cardoso, Wilson, Peternelli, Luiz A., Teófilo, Reinaldo F.

“…New strategies of ordered predictors selection (OPS) were developed in this work, making this method more versatile and expanding its worldwide use and…”
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Estimation of cellulose crystallinity of sugarcane biomass using near infrared spectroscopy and multivariate analysis methods by Caliari, Ítalo P., Barbosa, Márcio H.P., Ferreira, Sukarno O., Teófilo, Reinaldo F.

“…•The determination of sugarcane biomass crystallinity from near infrared is proposed.•The crystallinity of sugarcane biomass samples varied in a wide range of…”
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Predicting oil content in ripe Macaw fruits (Acrocomia aculeata) from unripe ones by near infrared spectroscopy and PLS regression by Oliveira, Ulisses F., Costa, Annanda M., Roque, Jussara V., Cardoso, Wilson, Motoike, Sergio Y., Barbosa, Marcio H.P., Teofilo, Reinaldo F.

“…•A faster, low-cost, and solvent-free method to predict macaw oil content is presented.•NIR spectroscopy was used to predict the maximum oil content 25 days in…”
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Sorting variables by using informative vectors as a strategy for feature selection in multivariate regression by Teófilo, Reinaldo F., Martins, João Paulo A., Ferreira, Márcia M. C.

“…A new procedure with high ability to enhance prediction of multivariate calibration models with a small number of interpretable variables is presented. The…”
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One-step process to produce furfural from sugarcane bagasse over niobium-based solid acid catalysts in a water medium by Catrinck, Mariana N., Barbosa, Paula S., Filho, Helder R.O., Monteiro, Robson S., Barbosa, Márcio H.P., Ribas, Rogério M., Teófilo, Reinaldo F.

“…This study investigated the production of furfural from sugarcane bagasse over niobic acid (Nb2O2·nH2O, called as NbO) or niobium phosphate (NbOPO4·nH2O,…”
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Physical–mechanical and antimicrobial properties of nanocomposite films with pediocin and ZnO nanoparticles by Espitia, Paula Judith Perez, Soares, Nilda de Fátima Ferreira, Teófilo, Reinaldo F., Coimbra, Jane Sélia dos Reis, Vitor, Débora M., Batista, Rejane Andrade, Ferreira, Sukarno Olavo, de Andrade, Nélio José, Medeiros, Eber Antonio Alves

“…► Nanocomposite films of methyl cellulose were made using central composite design. ► ZnO nanoparticles and pediocin were incorporated in nanocomposite films…”
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Phosphate Enrichment of Niobium-Based Catalytic Surfaces in Relation to Reactions of Carbohydrate Biomass Conversion: The Case Studies of Inulin Hydrolysis and Fructose Dehydration by Mariana N. Catrinck, Sebastiano Campisi, Paolo Carniti, Reinaldo F. Teófilo, Filippo Bossola, Antonella Gervasini

“…In this work, some physical mixtures of Nb2O5·nH2O and NbOPO4 were prepared to study the role of phosphate groups in the total acidity of samples and in two…”
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Prediction of Lignin Content in Different Parts of Sugarcane Using Near-Infrared Spectroscopy (NIR), Ordered Predictors Selection (OPS), and Partial Least Squares (PLS) by Assis, Camila, Ramos, Rachel S., Silva, Lidiane A., Kist, Volmir, Barbosa, Márcio H.P., Teófilo, Reinaldo F.

“…The building of multivariate calibration models using near-infrared spectroscopy (NIR) and partial least squares (PLS) to estimate the lignin content in…”
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New strategy for determination of anthocyanins, polyphenols and antioxidant capacity of Brassica oleracea liquid extract using infrared spectroscopies and multivariate regression by de Oliveira, Isadora R.N., Roque, Jussara V., Maia, Mariza P., Stringheta, Paulo C., Teófilo, Reinaldo F.

“…A new method was developed to determine the antioxidant properties of red cabbage extract (Brassica oleracea) by mid (MID) and near (NIR) infrared…”
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Optimization of extraction of high-ester pectin from passion fruit peel ( Passiflora edulis flavicarpa) with citric acid by using response surface methodology by Pinheiro, Eloı´sa Rovaris, Silva, Iolanda M.D.A., Gonzaga, Luciano V., Amante, Edna R., Teófilo, Reinaldo F., Ferreira, Márcia M.C., Amboni, Renata D.M.C.

“…A central composite design was employed to optimize the extraction of pectin with citric acid. The independent variables were citric acid concentration…”
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Early prediction of sugarcane genotypes susceptible and resistant to Diatraea saccharalis using spectroscopies and classification techniques by Porto, Nathália de A., Roque, Jussara V., Wartha, Cleiton A., Cardoso, Wilson, Peternelli, Luiz A., Barbosa, Márcio H.P., Teófilo, Reinaldo F.

“…The aim of this work was to use spectroscopic methods and partial least squares discriminant analysis (PLS-DA) for the early prediction of genotype resistance…”
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Use of NIR in COVID-19 Screening: Proof of Principles for Future Application by Martins, Matthews S., Nascimento, Marcia H. C., Leal, Leonardo B., Cardoso, Wilson J., Nobre, Vandack, Ravetti, Cecilia G., Frizera Vassallo, Paula, Teófilo, Reinaldo F., Barauna, Valerio G.

“…The COVID-19 pandemic that affected the world between 2019 and 2022 showed the need for new tools to be tested and developed to be applied in global…”
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Temporal decomposition sampling and chemical characterization of eucalyptus harvest residues using NIR spectroscopy and chemometric methods by Ferreira, Gabriel W.D., Roque, Jussara V., Soares, Emanuelle M.B., Silva, Ivo R., Silva, Eulene F., A. Vasconcelos, Aline, Teófilo, Reinaldo F.

“…Near-infrared (NIR) spectroscopy and chemometric methods were used to predict the chemical properties of decomposing eucalyptus harvest residues to better…”
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MCR-ALS applied to the quantification of the 5-hydroxymethylfurfural using UV spectra: Study of catalytic process employing experimental design by Terra, Larissa R., Catrinck, Mariana N., Teófilo, Reinaldo F.

“…Study of the production of 5-hydroxymethylfurfural (5-HMF) from glucose, applying niobic acid as catalyst, and the quantification of 5-HMF by selective…”
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Correlation of quantitative sensorial descriptors and chromatographic signals of beer using multivariate calibration strategies by da Silva, Gilmare A., Maretto, Danilo A., Bolini, Helena Maria A., Teófilo, Reinaldo F., Augusto, Fabio, Poppi, Ronei J.

“…► Sensorial parameters of beer quality were correlated with GC–MS data. ► Multivariate calibration was used to establish the correlation. ► Genetic algorithm…”
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Optimization of Eucalyptus benthamii progeny test based on Near-Infrared Spectroscopy approach and volumetric production by Castro, Carla Aparecida de Oliveira, Nunes, Andrei Caíque P., Roque, Jussara V., Teófilo, Reinaldo F., Santos, Osmarino P., Santos, Gleison A., Gallo, Ricardo, Pantuza, Igor B., Resende, Marcos Deon V.

“…•The estimated genetic parameters indicated favorable conditions for selection.•The coefficients of NIR shown high predictive potential for use this…”
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Improvements in the Extractive and Carbohydrate Analysis of Sugarcane Bagasse by Barbosa, Paula S., Barbosa, Marcio H. P., de Faria, Bruno de F. H., Teófilo, Reinaldo F.

“…Generic procedures for the determination of extractives and carbohydrates (glucose, xylose, galactose, arabinose, mannose) were improved specifically for…”
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Study of chemical compound spatial distribution in biodegradable active films using NIR hyperspectral imaging and multivariate curve resolution by Terra, Larissa R., Roque, Jussara V., Pola, Cícero C., Gonçalves, Igor M., Soares, Nilda de Fátima F., Teófilo, Reinaldo F.

“…A study of spatial distribution of the four different plasticizers and sorbic acid incorporated in cellulose acetate biodegradable films using near‐infrared…”
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