Výsledky vyhledávání - "Karla K. Beltrame"

Digital images and independent components analysis in the determination of bioactive compounds from grape juice

Autor: Patrícia Valderrama, Karla K. Beltrame, Paulo Henrique Março, Douglas N. Rutledge, Thays R. Gonçalves, Sandra Terezinha Marques Gomes, Makoto Matsushita

Publikováno v: LWT-Food Science and Technology
LWT-Food Science and Technology, Elsevier, 2021, 152, pp.112308. ⟨10.1016/j.lwt.2021.112308⟩

Analytical methods based on digital images coupled to chemometric tools are promising alternatives for developing analytical methodologies in determining quality parameters in foods. The total phenolics, monomeric anthocyanins, and tannin content wer

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fb464da6111cf4d4d05d35c6a642b587
https://hal.archives-ouvertes.fr/hal-03469117

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Application of digital images and multivariate calibration for the quantification of anthocyanin and antioxidant activity in grape juice

Autor: Sandra Terezinha Marques Gomes, Patrícia Valderrama, Karla K. Beltrame, P.H. Março, Thays R. Gonçalves, Makoto Matsushita

Publikováno v: Australian Journal of Grape and Wine Research. 25:156-160

Background and Aims The current methods for measuring the anthocyanin concentration (AC) and antioxidant activity (AA) of grape juice have limitations. The objective of this work was therefore to evaluate the application of digital imaging as a simpl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::46e0db779fd79cb81b2b0e9448c71875
https://doi.org/10.1111/ajgw.12387

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Pseudo-Univariate Calibration Based on NIR Spectroscopy in the Determination of Anthocyanins and Antioxidant Activity in Grape Juices

Autor: Makoto Matsushita, Patrícia Valderrama, Karla K. Beltrame, Sandra Terezinha Marques Gomes, Thays R. Gonçalves, Paulo Henrique Março

Publikováno v: Journal of the Brazilian Chemical Society v.32 n.5 2021
Journal of the Brazilian Chemical Society
Sociedade Brasileira de Química (SBQ)
instacron:SBQ

This work shows an alternative methodology based on a portable near-infrared (NIR) spectroscopy coupled to independent components analysis (ICA) in a pseudo-univariate calibration way to determine total anthocyanins (TA) concentration and antioxidant

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e7933628a3544f23fd4cfb882c37070e
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532021000501131

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Mesoporous activated carbon from industrial laundry sewage sludge: Adsorption studies of reactive dye Remazol Brilliant Blue R

Autor: Taís L. Silva, Patricia K.T. Leandro, Karen C. Bedin, André L. Cazetta, Karla K. Beltrame, Vitor C. Almeida, Osvaldo Pezoti, Lucas S. Souza, Amanda Ronix

Publikováno v: Chemical Engineering Journal. 303:467-476

Mesoporous activated carbon (AC) was prepared from sewage sludge of industrial laundry by slow pyrolysis followed of physical activation with CO2 and applied to remove reactive dye Remazol Brillant Blue R (RBBR) from aqueous solutions. The effect of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::626243d77bb7f9e70e2969031e6433a6
https://doi.org/10.1016/j.cej.2016.06.009

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Synthesis and application of N–S-doped mesoporous carbon obtained from nanocasting method using bone char as heteroatom precursor and template

Autor: Karen C. Bedin, Osvaldo Pezoti, Karla K. Beltrame, Vitor C. Almeida, Alessandro C. Martins, Tewodros Asefa, André L. Cazetta

Publikováno v: Chemical Engineering Journal. 300:54-63

We report the synthesis of N–S-doped mesoporous carbon (NSMC) using bone char (BC) as template and heteroatoms precursor. The efficiency of process was evaluated through the synthesis of a material without the use of BC (SC). The materials were pro

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7aaff98fb6010077897d6e849e671df3
https://doi.org/10.1016/j.cej.2016.04.124

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Soil Organic Carbon Determination Using NIRS: Evaluation of Dichromate Oxidation and Dry Combustion Analysis as Reference Methods in Multivariate Calibration

Autor: André Marcelo de Souza, Thayane Christine Barbosa Winkler, Patrícia Valderrama, Karla K. Beltrame, M. R. Coelho, Wyrllen E. Souza

Publikováno v: Journal of the Brazilian Chemical Society v.27 n.9 2016
Journal of the Brazilian Chemical Society
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
Journal of the Brazilian Chemical Society, Volume: 27, Issue: 9, Pages: 1527-1532, Published: SEP 2016
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA-Alice)
Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA

Dichromate oxidation and dry combustion analysis were evaluated as reference methods to determine organic carbon in Brazilian soils using near infrared spectroscopy (NIRS) as an alternative. The main objective of this study was to evaluate which of t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b331cc10ddb6df5e1fdd2b400d3dc744
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532016000901527

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Adsorption of caffeine on mesoporous activated carbon fibers prepared from pineapple plant leaves

Autor: André L. Cazetta, Taís L. Silva, Karla K. Beltrame, Patrícia S.C. Souza, Vitor C. Almeida, Lucas Spessato

Publikováno v: Ecotoxicology and environmental safety. 147

The present work reports the preparation of activated carbon fibers (ACFs) from pineapple plant leaves, and its application on caffeine (CFN) removal from aqueous solution. The preparation procedure was carried out using the H 3 PO 4 as activating ag

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::78ab5382880d0eff9a6ef6368d671538
https://pubmed.ncbi.nlm.nih.gov/28837871

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