Extração e fracionamento simultâneo do óleo da castanha-do-Brasil com etanol

Freitas, Suely Pereira; Freitas-Silva, Otniel; Miranda, Iara C. de; Coelho, Maria Alice Zarur

doi:10.1590/s0101-20612007000500002

Cited by 38 publications

(30 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…27,28 The oxidative metabolism can be evaluated by the quantification of oxygen consumption or the formation of derivatives from cellular oxidative metabolism, superoxide anion being among them. 29,30 In this context, Brazil nut stands out for presenting high content of oil (around 45,2%), comprising palmitic, stearic, oleic, and linoleic acids , 31 vitamins, minerals, [32][33][34] and other compounds, such as tannins, ellagic acid, curcumin, flavonoids, and isoflavones. 35 Then, the aim of this study was to develop and characterize a Brazil nut oil microemulsion system and evaluate the effect of this microemulsion on the superoxide release in human phagocytes.…”

Section: Introductionmentioning

confidence: 99%

Microemulsion of Brazil nut oil as a natural product to improve superoxide release in human phagocytes

et al. 2017

View full text Add to dashboard Cite

The aim of this study was to develop and characterize a Brazil nut oil microemulsion system and determine the effect of this microemulsion on the superoxide release in human phagocytes. The microemulsion was formulated using distilled water, Brazil nut as the oily phase, Sorbitan monooleate, Polysorbate 80, and butan-1-ol. Hydrophile-lipophile balance of Brazil nut oil was determined, pseudoternary diagrams were prepared, and microemulsion diagram regions were preselected. Preliminary and accelerated stability tests, rheological characterization and dynamic light scattering were performed. The immunomodulatory effect of the microemulsion on the interactions with leukocytes was determined by superoxide release. The developed formulations were classified as oil-in-water, showed a Newtonian profile, with linear viscosity and droplet sizes of 46.9; 66.5 and 34.3 nm. When we assessed the interaction of the microemulsion of Brazil nut oil with phagocytes, we observed an increase in superoxide release. Our findings indicate that the developed formulation improved the immunomodulatory activity of the Brazil nut oil, proving to be a natural product option for future applications, in particular for infectious diseases.

show abstract

Section: Introductionmentioning

confidence: 99%

Microemulsion of Brazil nut oil as a natural product to improve superoxide release in human phagocytes

et al. 2017

View full text Add to dashboard Cite

show abstract

“…On the other hand, the 5-kDa PES membrane showed 62% phospholipid retention in miscella form (using anhydrous ethyl alcohol as a solvent), and required a long time to reach a CF (Kumar and Bhowmick, 1996;Freitas et al, 2007) which hinders the passage of miscella through the membrane, necessitating a longer time to reach a CF of 1.4, in addition to a sharp decrease in the flow and the probable onset of pore obstruction. The flow rates encountered in this study can be considered higher than those observed by Manjula and Subramanian (2009), who used non-porous membranes (2.04 kg·m…”

Section: Degumming Of Crude Rice Bran Oil In the Ultrafi Ltration Unitmentioning

confidence: 99%

Ultrafiltration-based degumming of crude rice bran oil using a polymer membrane

2016

View full text Add to dashboard Cite

SUMMARY:Membrane technology has been gaining momentum in industrial processes, especially in food technology. It is believed to simplify processes, reduce energy consumption, and eliminate pollutants. The objective was to study the performance of polyvinylidene fluoride (PVDF) and polyethersulfone (PES) polymeric membranes in the degumming of the miscella of crude rice bran oil by using a bench-scale tangential filtration module. In addition, oil miscella filtration techniques using hexane and anhydrous ethyl alcohol solvents were compared. All membranes showed the retention of phospholipids and high flow rates. However, the best performance was observed using the 50-kDa PVDF membrane in miscella hexane solvent, with a 95.5% retention of the phosphorus concentration (by a factor of 1.4), resulting in a permeate with 29 mg·kg −1 of phosphorus and an average flow rate of 48.1 L·m −2 ·h −1 . This technology can be used as a low-pollution, economical alternative for the de-gumming of crude rice bran oil, being effective in the removal of hydratable and non-hydratable phospholipids, resulting in oils with a low phosphorus content. KEYWORDS:Crude rice bran oil; Phospholipids; Polymeric membranes; Ultrafiltration RESUMEN: Desgomado de aceite de salvado de arroz crudo usando ultrafiltración con membrana polimérica. La tecnología de membrana ha ido ganando impulso en los procesos industriales, especialmente en tecnología de los alimentos. Se piensa que simplifica los procesos, reduce el consumo de energía, y elimina contaminantes. El objetivo fué estudiar el rendimiento de las membranas poliméricas de fluoruro de polivinilo (PVDF) y poliéter-sulfona (PES) en el desgomado de miscelas de aceite de salvado de arroz crudo, mediante el uso de un módulo de filtración de escalado tangencial. Además, se compararon las técnicas de filtración de miscelas de aceite, utilizando como disolventes hexano y alcohol etílico anhidro. Todas las membranas mostraron retención de los fosfolípidos y altas tasas de flujo. Sin embargo, se observó un mejor rendimiento usando la membrana de PVDF de 50-kDa con hexano como disolvente, con una retención del 95,5% de la concentración de fósforo (por un factor de 1,4), dando como resultado un permeado con 29 mg·kg −1 de fósforo y un promedio tasa de 48,1 L·m de fluido. Esta tecnología se puede considerar como de baja contaminación y una alternativa económica para el desgomado de aceite de salvado de arroz crudo, siendo eficaz en la eliminación de los fosfolípidos hidratables y no hidratables, resultando unos aceites con un bajo contenido en fósforo. PALABRAS CLAVE: Aceite de salvado de arroz crudo; Fosfolípidos; Membranas poliméricas; UltrafiltraciónCitation/Cómo citar este artículo: Sehn GAR, Gonçalves LAG, Ming CC. 2016. Ultrafiltration-based degumming of crude rice bran oil using a polymer membrane. Grasas Aceites 67 (1): e120. doi: http://dx

show abstract

“…In this sense, there is potentiality in the use of Brazil nut oil due to its rich lipid profile, which presents about 13.8% of palmitic acid; 8.7% stearic acid; 31.4% oleic acid and 45.2% linoleic acid, besides small amounts of palmitoleic and myristic acids (Gutierrez, Regitano-D'Arce, & Rauenmiguel, 1997;Freitas, Freitas-Silva, Miranda, & Coelho, 2007), all these fatty acids are considered as essential for the metabolic pathways of birds.…”

Section: Introductionmentioning

confidence: 99%

<b>Brazil nut oil in diets for breeder cocks

Rufino

Cruz

Melo

et al. 2017

Acta Sci. Anim. Sci.

View full text Add to dashboard Cite

ABSTRACT. This study aimed to evaluate the inclusion of Brazil nut oil in diets for breeder cocks on performance, semen analyses, biochemical serum profile and testicular morphology. Forty-two Rhode Island Red breeder cocks with 40 weeks of age were used. The experimental design was completely randomized consisting of seven levels of Brazil nut oil (0; 0.30; 0.60; 0.90; 1.20; 1.50 and 1.80%) in the diets. Data collected were evaluated by polynomial regression. Differences (p < 0.05) were detected in feed conversion, semen volume, motility, vigor, pH, swirling and concentration, in which the inclusion of Brazil nut oil in the diets improved the reproductive performance. Differences (p < 0.05) were also detected in the biochemical serum profile (triglycerides, cholesterol and blood pH); the inclusion of Brazil nut oil caused a large increase in blood triglycerides and cholesterol levels, consequently, changing the blood pH. The Brazil nut oil can be used as an energetic additive in diets given to breeder cocks, promoting better reproductive performance, without changing semen and testicular morphology, but altering the biochemical serum profile of the birds.Keywords: additive, fatty acids, metabolism, reproductive performance. Óleo de castanha do Brasil em rações de galos reprodutoresRESUMO. Objetivou-se avaliar a inclusão de níveis crescentes de óleo de castanha do Brasil (0; 0,30; 0,60; 0,90; 1,20; 1,50 e 1,80%) em rações de galos reprodutores sobre o desempenho, análise andrológica, perfil bioquímico sérico e biometria testicular. Foram utilizados 42 galos reprodutores Rhode Island Red com 40 semanas, distribuídos em um delineamento experimental inteiramente casualizado constituído de sete tratamentos com seis galos (repetições) cada. As estimativas dos níveis de óleo de castanha foram determinadas através de regressão polinomial à 5% de significância. Foram observadas diferenças (p < 0,05) nos resultados de conversão alimentar, volume seminal, motilidade, vigor, pH turbilhonamento e concentração seminal a partir da a inclusão de óleo de castanha do Brasil nas rações. Os resultados de perfil bioquímico sérico (triglicerídeos, colesterol e pH sanguíneo) também apresentaram diferenças (p < 0,05) onde a inclusão de óleo de castanha do Brasil nas rações ocasionou maior acúmulo de triglicerídeos e colesterol sanguíneo, consequentemente modificando o pH do meio. Concluiu-se que o óleo de castanha do Brasil pode ser utilizado como aditivo energético em rações para galos reprodutores promovendo melhora na conversão alimentar e no desempenho reprodutivo, sem modificar a morfologia espermática e testicular, porém, alterando o perfil bioquímico sérico das aves.Palavras-chave: ácidos graxos, aditivo, desempenho reprodutivo, metabolismo.

show abstract

Extração e fracionamento simultâneo do óleo da castanha-do-Brasil com etanol

Cited by 38 publications

References 1 publication

Microemulsion of Brazil nut oil as a natural product to improve superoxide release in human phagocytes

Microemulsion of Brazil nut oil as a natural product to improve superoxide release in human phagocytes

Ultrafiltration-based degumming of crude rice bran oil using a polymer membrane

<b>Brazil nut oil in diets for breeder cocks

Contact Info

Product

Resources

About