A potential bio-antioxidant for mineral oil from cashew nutshell liquid: an experimental and theoretical approach

Paula, Rubem S. F.; Vieira, Rodrigo Silveira; Luna, Francisco; Cavalcante, Célio L.; Figueredo, Igor M.; Candido, José R.; Silva, Leonardo P.; Marinho, Emmanuel Silva; Lima‐Neto, Pedro de; Lomonaco, Diego; Mazzetto, Selma Elaine; Rios, Maria Alexsandra de Sousa

doi:10.1007/s43153-020-00031-z

Cited by 12 publications

(7 citation statements)

References 51 publications

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“…Although these GAP values are higher than those calculated for C18H18O4. Some studies have indicated antioxidant potential associated with compounds with lower energy GAP values which close to C18H18O4 -Paula et al (2020) [39] indicated antioxidant potential in caradanols when applied in mixtures with mineral oil (GAP of 5.927 eV or 571.9 kJ/mol). Furthermore, the HOMO value relates to oxidative processes.…”

Section: Molecular Modeling Analysismentioning

confidence: 87%

“…From data produced by theoretical calculations through the Density Functional Theory (DFT) [38], the values of HOMO (highest occupied molecular orbital) and LUMO (lowest unoccupied molecular orbital) were calculated. According to Paula et al (2020) [39], the HOMO is the outermost orbital containing donor electrons and LUMO is the innermost orbital containing free places to accept electrons. The difference between the energy density values of HOMO and LUMO orbitals is denominated GAP value.…”

Section: Molecular Modeling Analysismentioning

confidence: 99%

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Aplicação de Chalconas e Análogos com Aditivos Antioxidantes em Misturas de Diesel e Biodiesel

Faria¹,

Oliveira²,

Duarte³

et al. 2022

Blucher Engineering Proceedings

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The fossil fuels are precursors of a large share of pollutants gas emissions into atmosphere. Thus, there is a growing demand for renewable and less polluting energy sources. The biodiesel represents a promising alternative for Brazilian and global energy matrices diversification as well as for reducing the environmental impacts of internal combustion engines. However, the biodiesel using can generate some technical problems associated with its lower stability and greater susceptibility to degradation in relation to petroleum diesel. As an alternative to the aforementioned problems, additives improve the physicochemical properties maintenance for biodiesel and its blends with mineral diesel, during storage and transport operations. This work includes the structural, energetic and reactional analysis associated to a chalcone molecule that presented a potential application as additive for diesel/biodiesel blends. Stability tests of S10 B20 diesel blended with C18H18O4 chalcone, during storage for 140 days, indicated an increase of up 50% in the accelerated oxidation stability time by modified Rancimat test method in relation to lower concentrations of same compound, according to data extracted from literature. The GAP, calculated from HOMO and LUMO energy also indicate high reactional stability for C18H18O4, confirming its antioxidant potential and being in accordance with some information for other antioxidant compounds, recommended like fuel and oils antioxidant additives. The results also indicated antibacterial activity associated to C18H18O4 chalcone.

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Section: Molecular Modeling Analysismentioning

confidence: 87%

Section: Molecular Modeling Analysismentioning

confidence: 99%

Aplicação de Chalconas e Análogos com Aditivos Antioxidantes em Misturas de Diesel e Biodiesel

Faria¹,

Oliveira²,

Duarte³

et al. 2022

Blucher Engineering Proceedings

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“…Cardanol is a byproduct of the cashew processing industry, and its global production was estimated to be 4.1 million tons in 2016, according to the Food and Agriculture Organization. Cardanol is the main constituent of the technical cashew nutshell liquid (tCNSL) and has potent antioxidant activity [ 1 , 2 , 3 ] because it is made up of a mix of aromatic and phenolic compounds. Thus, cardanol is one of the most essential green industrial raw materials and an abundant, refined, promising source of renewable phenols [ 4 ] because it possesses a critical group that eliminates free radicals formed during the oxidative process [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, there has been an increasing interest in studies on the evaluation and development of antioxidants from biomass, industrial and renewable waste, due to environmental concerns, limited availability of fossil resources, and the inconvenience of thermo-oxidative degradation of various organic products and processes [ 6 , 7 , 8 , 9 ]. Aiming to develop cheaper and more eco-friendly antioxidants with appropriate physicochemical properties [ 1 , 2 , 10 , 11 ], polysaccharide-based nanoparticles (NPs), chitosan (CHI) [ 12 , 13 ], sodium alginate (ALG), and Arabic gum (AG) have been used to encapsulate active ingredients by polyelectrolyte complexation (CPE) in their hydrophilic polymer matrices. This method uses ionic interactions between compounds that integrate opposite charges and utilizes routes that avoid the use of organic solvents [ 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

Chitosan-Based Nanoparticles for Cardanol-Sustained Delivery System

et al. 2022

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Cardanol, principal constituent of the technical cashew nut shell liquid, has applications as antioxidant and antibacterial, and these properties may be enhanced through encapsulation. In the present study, we isolated and purified cardanol, and nanoparticles (NPs) were produced by polyelectrolyte complexation using polysaccharide systems with chitosan, sodium alginate, and non-toxic Arabic gum, because they are biocompatible, biodegradable, and stable. We characterized the NPs for morphological, physicochemical, and antioxidant activity. The micrographs obtained revealed spherical and nanometric morphology, with 70% of the distribution ranging from 34 to 300 nm, presenting a bimodal distribution. The study of the spectra in the infrared region suggested the existence of physicochemical interactions and cross-links between the biopolymers involved in the encapsulated NPs. Furthermore, the NPs showed better antioxidant potential when compared to pure cardanol. Thus, the encapsulation of cardanol may be an effective method to maintain its properties, promote better protection of the active ingredient, minimize side effects, and can target its activities in specific locations, by inhibiting free radicals in various sectors such as pharmaceutical, nutraceutical, and biomedical.

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“…Depending on the copolymer composition, it was found that the copolymers can act as a stabilizer or flocculant of asphaltenes (Palermo and Lucas 2016;Mazzeo et al 2018;Zou et al 2019). Polymers based on cardanol, which is a biodegradable waste product from the cashew nut industry and widely available as derived from CNSL (cashew nut shell liquid) (Lopes et al 2008;Mazzetto et al 2012;Ferreira et al 2015;Paula et al 2020;Celia-Silva et al 2020), have also been studied as dispersant and flocculant of asphaltenes.…”

Section: Introductionmentioning

confidence: 99%

Reduction of asphaltenes adsorbed on kaolinite by polymers based on cardanol

Maravilha

Middea

Spinelli

et al. 2020

Braz. J. Chem. Eng.

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Oilsands are suspended fine solids in bitumen in which asphaltenes become adsorbed on the surfaces of these particles, reducing the quality of the oil and hence generating higher costs for the oil industry. Since some polymers containing specific functional groups are able to interact with asphaltenes, it can be expected that these kinds of polymers are able to reduce the amount of asphaltene adsorbed. In this work, the performance of three (co)polymers, with different molar ratios of cardanol and styrene was evaluated in the adsorption process of a model system (pentane insoluble asphaltenes-C5I in kaolinite) monitored by ultraviolet-visible spectrometry. Kaolinite and asphaltene were characterized by scanning electron microscopy with energy dispersive X-ray spectroscopy and the wettability of these samples was measured with a goniometer, before and after the adsorption process. The increase in polymer concentration (from 0.025 to 0.2%w/v) reduced the amount of adsorbed asphaltenes on kaolinite. Polycardanol homopolymer presented the best performance, indicating the important role of the hydroxyl group and pendent hydrocarbon chain on the adsorption of asphaltenes on kaolinite. The results evidence the potential of polycardanol, obtained from a renewable source, in the extraction process of bitumen from oil sand.

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A potential bio-antioxidant for mineral oil from cashew nutshell liquid: an experimental and theoretical approach

Cited by 12 publications

References 51 publications

Aplicação de Chalconas e Análogos com Aditivos Antioxidantes em Misturas de Diesel e Biodiesel

Aplicação de Chalconas e Análogos com Aditivos Antioxidantes em Misturas de Diesel e Biodiesel

Chitosan-Based Nanoparticles for Cardanol-Sustained Delivery System

Reduction of asphaltenes adsorbed on kaolinite by polymers based on cardanol

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