Nanoparticles from silk fibroin and Amazon oils: Potential larvicidal activity and oviposition deterrence against Aedes aegypti

Marinho, Victor H.S.; Holanda, Fabrício H.; Araújo, Inana F.; Jimenez, David Esteban Quintero; Pereira, Rayanne Rocha; Porto, André L. M.; Ferreira, Adriana Maciel; Carvalho, José Carlos Tavares; Freitas, Ana C.; Fernandes, Caio P.; Souto, Raimundo Nonato Picanço; Ferreira, Irlon M.

doi:10.1016/j.indcrop.2023.117133

Cited by 5 publications

(3 citation statements)

References 69 publications

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“…These AI values were less than 4 mg KOH/g, which approves batches C7 to CM1 for edible purposes. In a study by Marinho et al [37], silk fibroin nanoparticles with esters obtained from Brazil nut oil with low acidity indices promoted potential larvicidal activity and oviposition deterrence against Aedes aegypti. In several studies, Brazil nut oils with a low acidity index have already been used to treat depression in children and adolescents, preventing the non-degeneration of nervous tissue, among other cardiovascular pathologies that can be avoided [38,39].…”

Section: Resultsmentioning

confidence: 99%

FT-MIR-ATR Associated with Chemometrics Methods: A Preliminary Analysis of Deterioration State of Brazil Nut Oil

da Silva,

Ferreira,

Alamar

et al. 2023

Molecules

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Brazil nut oil is highly valued in the food, cosmetic, chemical, and pharmaceutical industries, as well as other sectors of the economy. This work aims to use the Fourier transform infrared (FTIR) technique associated with partial least squares regression (PLSR) and principal component analysis (PCA) to demonstrate that these methods can be used in a prior and rapid analysis in quality control. Natural oils were extracted and stored for chemical analysis. PCA presented two groups regarding the state of degradation, subdivided into super-degraded and partially degraded groups in 99.88% of the explained variance. The applied PLS reported an acidity index (AI) prediction model with root mean square error of calibration (RMSEC) = 1.8564, root mean square error of cross-validation (REMSECV) = 4.2641, root mean square error of prediction (RMSEP) = 2.1491, R2cal (calibration correlation coefficient) equal to 0.9679, R2val (validation correlation coefficient) equal to 0.8474, and R2pred (prediction correlation coefficient) equal to 0, 8468. The peroxide index (PI) prediction model showed RMSEC = 0.0005, REMSECV = 0.0016, RMSEP = 0.00079, calibration R2 equal to 0.9670, cross-validation R2 equal to 0.7149, and R2 of prediction equal to 0.9099. The physical–chemical analyses identified that five samples fit in the food sector and the others fit in other sectors of the economy. In this way, the preliminary monitoring of the state of degradation was reported, and the prediction models of the peroxide and acidity indexes in Brazil nut oil for quality control were determined.

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Section: Resultsmentioning

confidence: 99%

FT-MIR-ATR Associated with Chemometrics Methods: A Preliminary Analysis of Deterioration State of Brazil Nut Oil

da Silva,

Ferreira,

Alamar

et al. 2023

Molecules

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“…CWO has been used for the preparation of biodiesel by enzymatic catalysis [24]. Excellent physicochemical properties and activity against Aedes aegypti have been reported for nanoparticles made of silk fibroin with esters obtained from the oil of Carapa guianensis [26]. The waste products of CWO have also been tested for the production of sustainable new materials, such as adsorbents or microporous activated carbon for CO 2 capture [27,28].…”

Section: Introductionmentioning

confidence: 99%

“…The authors used dry fractionation and with acetone reported yields of 41% for the solid fraction from dry fractionation and 53% for the soluble fraction from acetone. Carapa guianensis, which has approximately 30% total saturated fatty acids compared to 40% for Carapa grandiflora [18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36], is expected to provide very different stearin and olein fractions. CWO fractionation, as a means to extend and amplify the use of the oil, is more challenging than the other tropical oils because of its high unsaturation levels.…”

Section: Introductionmentioning

confidence: 99%

Lipid Fractionation and Physicochemical Characterization of Carapa guianensis Seed Oil from Guyana

James,

Bouzidi,

Emery

et al. 2023

Processes

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The seed oil of Carapa guianensis, known as crabwood oil (CWO), is distinguished for its medicinal and cosmetics applications, attributed to its bioactive components and lipid profile. CWO and its dry and solvent fractionation were studied, with a focus on physicochemical functionality and the partitioning of known bioactive compounds, such as limonoids and sterols. Important bioactive components, including limonoids and sterols, were partitioned depending on the fractionation method; in particular, there is a direct dependence on solvent polarity. There was a very strong solid fraction yield–solvent polarity with a high linear slope of −121.3%. The partitioning of the lipids is significant enough to drive measurable and predictable changes in the physical properties. Palmitic (P: C16:0) and oleic (O: C18:1) fatty acids account for about 60% of the total fatty acid composition of the TAGs of CWO and its fractions. The most abundant limonoid is methyl angolensate (from 28 to 39%), followed by Trichilin A (from 13% to 22%). Gedunin and Andirobin were more abundant in the liquid fractions, whereas Carapanolides (less than 1.3%) were more present in the olein fractions. The crystallization and melting temperatures of the solid fractions were up to 26 °C, compared to 11 °C for CWO, and were particularly strongly correlated to the polarity of the solvents. The SFC profile indicated semi-solid fats, with the solid fractions showing up to 19% at 18 °C, twice the SFC in CWO. The fractions demonstrated a wide range of distinguishable microstructures. The shapes include well-organized spherulites and needle-like and rod-like crystals with sizes varying from 5 to 250 µ, suggesting that they are likely to have different flow characteristics and feel to the skin and mouth. There is a potential to make unique compositions with significantly different properties, with antimicrobial and antifungal efficacy due to the bioactive components of CWO through fractionation, using polarity as a predictive tool.

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Valorization of Deodorizing Distillate Palm Oil Residue for Larvicidal Activity Against Aedes aegypti and Synergistic Effect of Their Free Fatty Acids

Ribeiro,

Lopes,

Marinho

et al. 2023

Waste Biomass Valor

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Increased consumption of palm oil results in more palm oil by-products. To meet environmental sustainability, deodorizing distillate palm oil (DDPO) also calls attention to diversifying its technological or commercial application. Because of this, the present work, to present new economic-scienti c alternatives for this by-product, aimed to evaluate the larvicide effect of DDPO, well as to investigate the synergistic effect of the combination of these fatty acid present in the composition of DDPO, against larvae of 3rd instar of Ae. aegypti. The DDPO larvicide assay showed a high mortality rate, with an LC 50 of 6.18 µg.mL − 1 at 24 h and 8.73 µg.mL − 1 at 48 h of treatment. In addition, the results of LC 50 , among saturated fatty foods and between the combination of fatty acid (myristic, lauric, stearic and oleic) with palmitic acid, were met positively by second-degree polynomial regression analysis. Finally, the study of molecular docking, corroborated, as potential inhibitors of the binding of juvenile hormones. Together, the results suggest that DDPO can be a potential natural larvicide agent, making it an alternative to the excessive use of synthetic insecticides, thus minimizing its impacts on the environment and promoting new technologies for the use of this palm oil by-product.

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Nanoparticles from silk fibroin and Amazon oils: Potential larvicidal activity and oviposition deterrence against Aedes aegypti

Cited by 5 publications

References 69 publications

FT-MIR-ATR Associated with Chemometrics Methods: A Preliminary Analysis of Deterioration State of Brazil Nut Oil

FT-MIR-ATR Associated with Chemometrics Methods: A Preliminary Analysis of Deterioration State of Brazil Nut Oil

Lipid Fractionation and Physicochemical Characterization of Carapa guianensis Seed Oil from Guyana

Valorization of Deodorizing Distillate Palm Oil Residue for Larvicidal Activity Against Aedes aegypti and Synergistic Effect of Their Free Fatty Acids

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