Herbert de Sousa Barbosa

ORCID: 0000-0003-2094-7384
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Research Areas
  • Genetically Modified Organisms Research
  • Soybean genetics and cultivation
  • Proteins in Food Systems
  • Agricultural pest management studies
  • Plant Micronutrient Interactions and Effects
  • Polysaccharides and Plant Cell Walls
  • Plant tissue culture and regeneration
  • Polysaccharides Composition and Applications
  • Plant Stress Responses and Tolerance
  • Photosynthetic Processes and Mechanisms
  • Plant Genetic and Mutation Studies
  • Mass Spectrometry Techniques and Applications
  • Moringa oleifera research and applications
  • Iron oxide chemistry and applications
  • Venomous Animal Envenomation and Studies
  • Microbial Metabolites in Food Biotechnology
  • Aquaculture disease management and microbiota
  • Chemistry Education and Research
  • TiO2 Photocatalysis and Solar Cells
  • Marine Biology and Environmental Chemistry
  • Advanced Chemical Sensor Technologies
  • Science and Education Research
  • Evasion and Academic Success Factors
  • Animal Genetics and Reproduction
  • Phytase and its Applications

Universidade Federal do Piauí
2015-2024

Universidade Estadual de Campinas (UNICAMP)
2010-2015

Bioanalytica (Switzerland)
2013

National Institute of Standards and Technology
2012

Iron-doped TiO(2) (Fe:TiO(2)) nanoparticles were synthesized by the sol-gel method (with Fe/Ti molar ratio corresponding to 1, 3, and 5%), followed hydrothermal treatment, drying, annealing. A similar methodology was used synthesize α-Fe(2)O(3) nanoparticles. For comparison, a mixture hematite/titania, with = 4% also investigated. Characterization of samples using Rietveld refinement X-ray diffraction data revealed that consisted 82% anatase 18% brookite; for Fe:TiO(2), brookite increased...

10.1021/am301444k article EN ACS Applied Materials & Interfaces 2012-09-28

In this paper, we present an empirical study conducted with the aim to identify evidence of construction scientific knowledge from Investigative Case Based Learning (ICBL) proposal in Instrumental Chemistry discipline higher education. Data were generated heuristic diagrams created by students solve investigative case (IC) and analyzed using Lakatos' Scientific Investigation Programs (SIP) methodology. analyzing diagrams, identified conceptual methodological aspects that are appropriate for...

10.28976/1984-2686rbpec2025u189215 article EN cc-by Revista Brasileira de Pesquisa em Educação em Ciências 2025-03-18

In this study, 209 articles have been surveyed on the "Pectin Extraction via Response Surface Methodology (RSM)" that collected from Web of Science© and Scopus©, analyzed by using Bibliometrix, an RStudio package for science mapping analysis. Trends in optimization extraction methods pectin RSM pointed out, which may be useful further research. Results shown publications RSM" started more than 20 years, with a growing trend, triplicating last 10 years. Based such set papers, China has most...

10.1016/j.carpta.2022.100229 article EN cc-by-nc-nd Carbohydrate Polymer Technologies and Applications 2022-06-10

The main goal of this work is to evaluate some differential protein species in transgenic (T) and nontransgenic (NT) Arabidopsis thaliana plants after their cultivation the presence or absence sodium selenite. line was obtained through insertion CaMV 35S controlling nptII gene. Comparative proteomics 2D-DIGE carried out four different groups (NT × T; NT Se-NT (where Se selenium); Se-T, T Se-T). Although no proteins are achieved Se-T group, for others, 68 (by applying a regulation factor...

10.1002/pmic.201300427 article EN PROTEOMICS 2014-02-18

In the present work 17 different procedures for extraction of proteins from sunflower (Helianthus annuus L.) seeds in natura were evaluated regarding time and temperature, type solvent, analytical procedure. After each procedure, total protein was determined, ranging 260 ± 5 to 2727 11 μg g−1. Then, a 2-D PAGE used P4, P5, P13 P17, which considered most efficient protocols, calculate match between them. The highest (77 3%) lowest (48 1%) values achieved when × P17 P4 protocols compared,...

10.1039/c2ay25503k article EN Analytical Methods 2012-09-22

Este artigo tem por objetivo analisar a adaptação do diagrama heurístico como ferramenta didática na resolução de Casos Investigativos (CI). Para isso, o lado correspondente à parte metodológica foi modificado com inserção elementos modelo tomada decisão, tais como: geração alternativas, avaliação e escolha da solução. As modificações instrumento foram interpretadas discutidas luz metodologia programa investigação científica. ensaio discussão dos resultados, elaborado um solução CI. Com...

10.26843/rencima.v15n2a12 article PT cc-by-nc-sa Revista de Ensino de Ciências e Matemática 2024-06-27

In this study, 20 different protocols for protein extraction of cowpea seeds in natura were evaluated taking into account four parameters: cell disruption method, time, temperature and solvent.Factorial design experiments executed to determine the effects on total content extracts.The was determined results range 8.75 ± 1.3 86.6 6.9 mg g -1 .The richest extracts obtained using Tris-HCl buffer at 50 °C min each assessed method.However, water similar according t-test 95% confidence level.Six...

10.21577/0103-5053.20180163 article EN cc-by Journal of the Brazilian Chemical Society 2018-01-01
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