Bioactive compounds of the lipid fractions of agro-industrial waste

Silva, Ana Carolina da; Jorge, Neuza

doi:10.1016/j.foodres.2014.10.025

Cited by 132 publications

(108 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This can be attributed to the higher solubility of carotenoids with increasing oil temperatures (Yuan et al, 2008). The carotenoid content of jussara oil was higher when compared to oils extracted from some fruit seeds, such as grape, guava, melon, passion fruit, pumpkin, soursop and tomato, which varied from 4.4 to 11.9 mg/g (Da Silva and Jorge, 2014). Nunes et al (2015) observed higher carotenoid contents (378 μg/g) in crude macauba oil extracted by mechanical pressing, and verified that this value was drastically reduced to 9 mg/g during refining.…”

Section: Oil Characterizationmentioning

confidence: 99%

Chemical composition and oxidative stability of jussara (<em>Euterpe edulis</em> M.) oil extracted by cold and hot mechanical pressing

et al. 2018

View full text Add to dashboard Cite

SUMMARY:The aim of this work was to evaluate the effect of mechanical pressing on jussara oil yield, oxidative stability and carotenoid profile with or without heat application. Firstly, jussara pulp was centrifuged for juice extraction, and the resulting cake was dried until reaching 10% moisture content. Then, oil extraction was performed in an expeller press at 25 ºC (cold pressing) and at 50 ºC (hot pressing). The process performance was evaluated by the oil yield, and the crude jussara oil was characterized for fatty acid composition, acid value, carotenoid profile and oxidative stability. Jussara oil contained 74% unsaturated fatty acids, mainly oleic and linoleic acids (48% and 24%, respectively). The oil yield was almost twice as high for the hot process as compared to the cold one. Additionally, hot pressing resulted in 25% higher total carotenoid content as compared to cold pressing, with β-carotene as the most abundant one. Hot and cold pressing showed no difference in oil oxidative stability and fatty acid composition. KEYWORDS:Carotenoids; Euterpe edulis; Extraction; Fatty acid profile; Oxidative stability RESUMEN: Composición química y estabilidad oxidativa del aceite de jussara (Euterpe edulis M.) extraído mediante prensado mecánico en frío y en caliente. El objetivo de este estudio fue evaluar el efecto del calor sobre el rendimiento del aceite, la estabilidad oxidativa y el perfil de carotenoides del aceite de Jussara extraído por prensado mecánico. En primer lugar, se centrifugó la pulpa de jussara para la extracción del zumo, y la torta resultante se secó para alcanzar el contenido de humedad de 10%. Posteriormente, la extracción del aceite se realizó en una prensa a 25 °C (prensado en frío) y a 50 °C (prensado en caliente). El desarrollo del proceso fue evaluado mediante el rendimiento de aceite y en bruto y éste se caracterizó mediante la composición en ácidos grasos, índice de acidez, perfil de carotenoides y la estabilidad oxidativa. El aceite de jussara presentó un 74% de ácidos grasos insaturados, principalmente ácidos oleico y linoleico (48% y 24%, respectivamente). El rendimiento del aceite para el proceso en caliente fue casi el doble, en comparación con el proceso en frío. Además, el prensado en caliente mostró un contenido total de carotenoides 25% mayor en comparación con el prensado en frío, siendo el β-caroteno, el carotenoide más abundante. Las prensas en calientes y en frío no mostraron diferencias en la estabilidad oxidativa del aceite ni en la composición de ácidos grasos.

show abstract

Section: Oil Characterizationmentioning

confidence: 99%

Chemical composition and oxidative stability of jussara (<em>Euterpe edulis</em> M.) oil extracted by cold and hot mechanical pressing

et al. 2018

View full text Add to dashboard Cite

show abstract

“…The film extract solution for the assays was obtained by shaking tubes containing 19.5 mL deionized water and 0.5 g of the films (0.3 cm × 0.3 cm) at 37 • C, 150 rpm for 30 min, followed by centrifugation at 10,000× g for 5 min to remove solid materials. FRAP reagent was prepared according to methods described by Da Silva and Jorge [21]. A mixture of FRAP reagent (5 mL) and film sample (2 mL) was placed in the dark for 30 min and centrifuged at 3000× g for 3 min to eliminate precipitate.…”

Section: Determination Of Antioxidant Activitiesmentioning

confidence: 99%

Characterization of Barnyard Millet Starch Films Containing Borage Seed Oil

2017

View full text Add to dashboard Cite

Abstract:In this study, barnyard millet starch (BMS) was used to prepare edible films. Antioxidant activity was conferred to the BMS film by incorporating borage seed oil (BO). The physical, optical, and thermal properties as well as antioxidant activities of the films were evaluated. The incorporation of BO into the BMS films decreased the tensile strength from 9.46 to 4.69 MPa and increased the elongation at break of the films from 82.49% to 103.87%. Water vapor permeability, water solubility, and moisture content of the BMS films decreased with increasing BO concentration, whereas Hunter b value and opacity increased, L and a values of the films decreased. The BMS films containing BO exhibited antioxidant activity that increased proportionally with increased BO concentration. In particular, the BMS film with 1.0% BO exhibited the highest antioxidant activity and light barrier properties among the BMS films. Therefore, the BMS films with added BO can be used as an antioxidant packaging material.

show abstract

“…posterior análises de ácidos graxos são realizados através de Soxhlet (Lima, et al 2014;Gunawan, et al, 2013;Caprioli, et al, 2016) e o por Bligh & Dyer (Wannes & Marxouk, 2016;Silva, et al, 2014;Macagnan, et al, 2015).…”

Section: Ufscar -São Carlos -Sp 16 a 19 De Julho De 2017unclassified

Extração De Lipídios Totais Em Amostra De Semente De Maracujá Utilizando Diclorometano

Alves

Pereira

Sanches³

et al. 2017

Blucher Chemical Engineering Proceedings

View full text Add to dashboard Cite

RESUMO -Sementes são ricas em lipídios, com destaque aos poliinsaturados, além de serem fontes de compostos bioativos. A qualidade dos óleos vegetais está relacionada com a presença de compostos bioativos, na qual o seu conteúdo pode variar de acordo com o processo de extração. Para evitar a degradação desses compostos, a extração desses lipídios não deve ser feita a quente. Foi desenvolvido um método de extração de lípidos a frio, utilizando diclorometano, solvente menos nocivo que o clorofórmio que é utilizado no método Bligh & Dyer. Empregando o novo método, que utiliza diclorometano-água (3:1, v/v) e 10 mL de metanol, obteve-se uma média de 21% de lipídios totais extraídos da semente de maracujá, não apresentando diferença significativa (p<0,05) com o método Bligh & Dyer. INTRODUÇÃOAs sementes de maracujá, resíduos industriais provenientes do processo de esmagamento da fruta para a obtenção do suco, atualmente são na sua maioria descartadas, gerando resíduo, agregar valor a estes subprodutos é de interesse econômico, científico e tecnológico (Ferrari et al., 2004).De acordo com Ferrari et al. (2004), as sementes de maracujá possuem em torno de 25,7% de óleo e teor protéico de 15,62%, sendo também ricas em fibras. Morais et al. (2015) relata que cascas e sementes podem apresentar maior teor de nutrientes do que a polpa. Sementes são ricas em lipídios, com destaque aos poliinsaturados (Koolen et al., 2013), além de serem fontes de compostos bioativos. Assim, seu consumo pode proporcionar benefícios à saúde, como a prevenção de doenças cardiovasculares, câncer, inflamações, artrites, diabetes, mal de Alzheimer (Koolen et al., 2013).A qualidade dos óleos vegetais é relacionada com a presença de compostos bioativos, na qual o seu conteúdo pode variar de acordo com o processo de extração. Entretanto, os métodos analíticos empregados para a determinação desses bioativos ainda não estão bem consolidadas. A etapa extração com solvente é o ponto mais crítico para a análise de matéria graxa total, lipídios neutros e polares, e composição ácidos graxos de sementes. Trabalhos científicos, relacionados a sementes de frutas, demonstram que as extrações de lipídios para

show abstract

Bioactive compounds of the lipid fractions of agro-industrial waste

Cited by 132 publications

References 37 publications

Chemical composition and oxidative stability of jussara (<em>Euterpe edulis</em> M.) oil extracted by cold and hot mechanical pressing

Chemical composition and oxidative stability of jussara (<em>Euterpe edulis</em> M.) oil extracted by cold and hot mechanical pressing

Characterization of Barnyard Millet Starch Films Containing Borage Seed Oil

Extração De Lipídios Totais Em Amostra De Semente De Maracujá Utilizando Diclorometano

Contact Info

Product

Resources

About