Keysson Vieira Fernandes

ORCID: 0000-0003-0521-7631
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Research Areas
  • Toxin Mechanisms and Immunotoxins
  • Transgenic Plants and Applications
  • Enzyme Catalysis and Immobilization
  • Plant tissue culture and regeneration
  • Lubricants and Their Additives
  • Biodiesel Production and Applications
  • Plant biochemistry and biosynthesis
  • Microbial Inactivation Methods
  • biodegradable polymer synthesis and properties
  • Phytochemistry Medicinal Plant Applications
  • Muscle metabolism and nutrition
  • Phytochemicals and Antioxidant Activities
  • Plant-Derived Bioactive Compounds
  • Coffee research and impacts
  • Edible Oils Quality and Analysis

Universidade Federal do Rio de Janeiro
2018-2020

State University of Norte Fluminense
2011-2012

Instituto Federal Fluminense
2011

The side streams derived from the palm oil production process, namely kernel cake, pressed fibre, shells and empty fruit bunches, were evaluated as sources of phenolic compounds. Among these streams, cake had highest total content (in mg gallic acid equivalents (GAE) per g dry sample) with a value 5.19, whereas bunches lowest (1.79). extraction time liquid-to-solid ratio investigated to optimize extraction. Kernel exhibited (5.35 mg/g) 40:1 during 20 min main compounds extracts deriving all...

10.17113/ftb.57.01.19.5784 article EN cc-by Food Technology and Biotechnology 2018-12-14

Ricinus communis L. is of great economic importance due to the oil extracted from its seeds. Castor has been used for pharmaceutical and industrial applications, as a lubricant or coating agent, component plastic products, fungicide in synthesis biodiesel fuels. After extraction, castor cake with large amount protein obtained. However, this by-product cannot be animal feed presence toxic (ricin) allergenic (2S albumin) proteins. Here, we propose two processes detoxification allergen...

10.1590/s0100-879x2012007500132 article EN cc-by Brazilian Journal of Medical and Biological Research 2012-08-18

Ricin is a toxic protein present in castor bean seeds (Ricinus communis). A residue named waste generated during biodiesel production process, such as that developed by PETROBRAS (the national petroleum company of Brazil). Solid-state fermentation (SSF) was used to detoxify through the Penicillium simplicissimum growth. After 24 h fungal growth, ricin no longer identified Sephadex G-50 gel chromatography. In order verify biological activity after several treatment stages, an vitro assay...

10.1016/j.procbio.2011.12.011 article EN publisher-specific-oa Process Biochemistry 2011-12-24

Ricinus communis has a great economical importance due to the extracted oil of its seeds that is used for biodiesel synthesis. After extraction, castor meal containing high protein level obtained, however, it can not be animal consumption toxic (ricin) and allergenic (2S albumin) proteins. Two processes detoxification allergens inactivation were proposed. In addition, detection ricin, biological test was introduced. this test, Vero cells treated with ricin cell death measured by counting...

10.1096/fasebj.26.1_supplement.576.5 article EN The FASEB Journal 2012-04-01
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