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Nuclear magnetic resonance (1.40 T) and mid infrared (FTIR-ATR) associated with chemometrics as analytical methods for the analysis of methyl ester yield obtained by esterification reaction. Author(s): KOLLAR, S. R. M.; NOVOTNY, E. H.; NASCIMENTO, C. J. do; SUAREZ, P. A. Z. In this work, we compared 1.40 T nuclear magnetic resonance (NMR) to 7.05 T (60 and 300 MHz for proton, respectively), and mid-infrared with attenuated total reflectance (FTIR‑ATR), associated w... ... Repository: BDPA Publication year: 2017
Metal chloride-catalyzed acetylation of starch: Synthesis and characterization. Author(s): BISWAS, A.; KIM, S.; FURTADO, R. F.; ALVES, C. R.; BETTRUM, M.; BODDU, V.; CHENG, H. N. Repository: BDPA Publication year: 2018
Enzymatic synthesis of aromatic biobased polymers in green, low-boiling solvents. Author(s): SALUM, T. F. C.; DAY, D.; SHERWOOD, J.; PELLIS, A.; FARMER, T. J. Given the urge to accelerate the substitution of petrol-derived solvents not only in more traditional fields like pharmaceuticals, personal care, or electronics but also in innovative research process... ... Repository: BDPA Publication year: 2024
Combinatorial synthesis of chiral esters from fruit aroma in continuous-flow reactors by chemical and enzymatic catalysis. Author(s): MELO, C. W. B.; SANTANA, Y. O.; SILVA, R. M. V.; BEZERRA, M. A. M.; BIZZO, H. R.; SOUZA, R. O. M. A.; LEÃO, R. A. C.; REZENDE, C. Short-chain chiral esters are important constituents in natural fruit flavors, as well as in food and pharmaceutical industries. Different chemical and bio-catalytic routes are used for their synthesi... ... Repository: BDPA Publication year: 2024
FACILE HYDROTHERMAL SYNTHESIS OF NIOBIUM PENTOXIDE SEMICONDUCTOR AND THEIR APPLICATION IN THE PHOTODEGRADATION OF DYES AND REDUCTION OF FREE FAT ACIDS IN WASTE OIL. Author(s): CRISÓSTOMO, C. A. B.; DAMACENO, F. B.; BARBOSA, L. R. de S.; ALMEIDA, J. S.; BATISTA, W. V. F. do C.; MALAGUTTI, A. R.; MESQUITA, J. P. de; TORRES, J. A.; IGA, G. D.; RIBEIRO, C.; RIBEIRO, R. A.; MOURÃO, H. A. J. L. We report a facile hydrothermal method for the synthesis of niobium pentoxide (Nb2O5) under two different temperatures, 120 °C (Nb2O5-120) and 150 °C (Nb2O5-150). The obtained materials were character... ... Repository: BDPA Publication year: 2024
Revealing the Structure Formation on Polyglycerol Citrate Polymers - An Environmentally Friendly Polyester as a Seed-Coating Material. Author(s): GIROTO, A. S.; VALLE, S. F.; BORGES, R.; COLNAGO, L. A.; RIBEIRO, T. S.; JABLONOWSKI N. D.; RIBEIRO, C.; MATTOSO, L. H. C. Abstract: A detailed structural investigation of a promising bio-based polymer, polyglycerol citrate polyester, obtained by the bulk polycondensation of glycerol (Gly) against citric acid (Cit) under... ... Repository: BDPA Publication year: 2023
Gas chromatographic mass spectrometric detection of dihydroxy fatty acids preserved in the 'bound' phase of organic residues of archaeological pottery vessels. Author(s): HANSEL, F. A.; BULL, I. D.; EVERSHED, R. P. A methodology is presented for the determination of dihydroxy fatty acids preserved in the ‘bound’ phase of organic residues preserved in archaeological potsherds. The method comprises saponification,... ... Repository: BDPA Publication year: 2011
Characterization of different oil soapstocks and their application in the lipase production by Aspergillus niger under solid state fermentation. Author(s): SANTOS, R. dos S.; MURUCI, L. N. M.; SANTOS, L. O.; ANTONIASSI, R.; SILVA, J. P. L. da; DAMASO, M. C. T. Lipases are enzymes that catalyze the hydrolysis of the ester linkage in a triacylglycerol oil-water interface, while in non-aqueous environments they catalyze reverse reactions (esterification, trans... ... Repository: BDPA Publication year: 2014

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