4 documents found, page 1 of 1
Evaluation of chemical characteristics and correlation analysis with pulp brown...
Ercoli, Luciana; Barizão, Érica Oliveira; Boeing, Joana Shuelter; Kvitschal, Marcus Vinícius; Visentainer, Jesuí Vergilio; Almeida, Vitor de CinqueIn this research, the total phenolic content (TPC) and antioxidant capacity (FRAP and DPPH•× assays) of pulps and peels of advanced selection of apples grown in Brazil were investigated. The correlation analyses between the activity of polyphenoloxidase enzyme (PPO), vitamin C content, total titratable acidity, and color parameters were performed. The results indicated that the data differed significantly among...
Evaluation of solvent effect on the extraction of phenolic compounds and antiox...
Boeing, Joana Schuelter; Barizao, Erica Oliveira; Costa e Silva, Beatriz [UNESP]; Montanher, Paula Fernandes; Almeida, Vitor de CinqueMade available in DSpace on 2015-03-18T15:55:52Z (GMT). No. of bitstreams: 0 Previous issue date: 2014-08-22Bitstream added on 2015-03-18T16:28:31Z : No. of bitstreams: 1 WOS000341395300001.pdf: 446154 bytes, checksum: f1b80aabfe0c9b51692dd8f875d70152 (MD5); Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES); Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); Background: This...
Simultaneous determination of textile dyes by Adsorptive Cathodic Stripping Vol...
Santos, Lidia Brizola; Domingues, Fernando Santos; Rosseto, Fernando; Almeida, Vitor de Cinque; Garcia, Juliana Carla; Souza, Nilson Evelázio deThe Adsorptive Cathodic Stripping Voltammetry (ACSV - differential pulse) proved to be an efficient method in the separation and quantification of two reactive textile dyes, Procion Yellow (PY) and Procion Red (PR), each containing two azo groups as chromophores and two monochlorotriazine reactive groups, at nanomolar level. The linearity of the method obtained for each reactive dye was 30.15 – 633.15 nmol L-1 ...
Evaluation of the chemical aspects of sludge in sewage treatment stations of Ma...
Almeida, Vitor de Cinque; Lenzi, Ervim; Favero, Luzia Otília Bortotti; Luchese, Eduardo BernardiThe aim of this research was to evaluate the amount of some metals and nutrients in the sludge of the sewage treatment stations (STS) of Maringá. During the year samples of sludge were collected at STS-2 and STS-3. Previously dried and ground the sludge samples at constant weights were digested by aqua regia. The reading of metal concentrations was made by atomic absorption spectrometry. Nitrogen and carbon wer...