Publicado

2022-06-29

Functional and chemical qualities of Vitis labrusca grape seed oil extracted by supercritical CO2

Calidad funcional y química del aceite de semilla de Vitis labrusca extraído mediante CO2 supercrítico

Qualidade funcional e química do óleo de semente de Vitis labrusca extraído por CO2 supercrítico

Palabras clave:

Grape seed oil, Vitis labrusca, linoleic acid, α-tocopherol, phenolics, supercritical CO2 (en)
Óleo de semente de uva, Vitis labrusca, ácido linoleico, α-tocoferol, fenólicos, CO2 supercrítico (pt)
aceite de semilla de uva, Vitis labrusca, ácido linoleico, α-tocoferol, fenólicos, CO2 supercrítico (es)

Autores/as

Grape seed oil, which is extracted with highly toxic organic solvents that are harmful to human health, is produced from tons of grape pomace waste, generated during winemaking. Sometimes, this waste is used to make compost or is burnt, which causes environmental contamination. The functional qualities, antioxidant capacity (AC), α-tocopherol and total phenolic compounds content (TPC) of Black Borgoña (Vitis labrusca) grape seed oil, extracted by supercritical CO2, were evaluated. The high content of linoleic acid (w-6) and monounsaturated fatty acids contributed to the beneficial effect on ​​the functional quality indices, which were 0.20, 0.23, 11.80 for IA, IT and H:H, respectively. In addition, a POV of 6.23 ± 0.08 milliequivalents of peroxide/kg oil and an anisidine index of 2.70 ± 0.05 indicated a good quality oil. Also, a high concentration of α-tocopherol (9.82 ± 0.02 mg/100 g oil) and a high TPC (114.14 ± 3.24 mg GAE/kg oil) were obtained. This study demonstrated that supercritical CO2 extraction is a suitable method for the delivery of a high-quality grape seed oil.

 

El aceite de semilla de uva generalmente se extrae con disolventes orgánicos altamente tóxicos y perjudiciales para la salud humana, se produce a partir de toneladas de residuos de orujo de uva, generados durante la elaboración del vino. A veces, estos residuos se utilizan para hacer compost o se queman, lo que provoca la contaminación del medio ambiente. Se evaluaron las cualidades funcionales, la capacidad antioxidante (AC), el contenido de α-tocoferol y los compuestos fenólicos totales (TPC) del aceite de semilla de uva de borgoña negra (Vitis labrusca), extraído mediante CO2 supercrítico. El alto contenido de ácido linoleico (w-6) y de ácidos grasos monoinsaturados contribuyó al efecto beneficioso sobre los índices de calidad funcional que fueron de 0,20, 0,23, 11,80 para IA, IT y H:H, respectivamente. Además, un POV de 6,23 ± 0,08 miliequivalentes de peróxido/kg de aceite y un índice de anisidina de 2,70 ± 0,05 indicaban una buena calidad del aceite. También se obtuvo una alta concentración de α-tocoferol (9,82 ± 0,02 mg/100 g de aceite) y un alto TPC (114,14 ± 3,24 mg de GAE/kg de aceite). Este estudio demostró que la extracción con CO2 supercrítico es un método adecuado para obtener un aceite de semilla de uva de alta calidad.

 

O óleo de semente de uva é geralmente extraído com solventes orgânicos altamente tóxicos que são prejudiciais à saúde humana, é produzido a partir de toneladas de resíduos de bagaço de uva, gerados durante a vinificação. Às vezes, esses resíduos são usados para fazer adubo ou são queimados, o que causa contaminação ambiental. Foram avaliadas as qualidades funcionais, capacidade antioxidante (AC), α-tocoferol e o teor total de compostos fenólicos (TPC) do óleo de semente de uva Borgoña Negra (Vitis labrusca), extraído por CO2 supercrítico. O alto teor de ácido linoleico (w-6) e ácidos graxos monoinsaturados contribuiu para o efeito benéfico sobre os índices de qualidade funcional que foram 0.20, 0.23, 11.80 para IA, IT e H:H, respectivamente. Além disso, um POV de 6.23 ± 0.08 miliequivalentes de peróxido/kg de óleo e um índice de anisidina de 2.70 ± 0.05 indicava uma boa qualidade de óleo. Também foi obtida uma alta concentração de α-tocoferol (9.82 ± 0.02 mg/100 g de óleo) e um alto TPC (114.14 ± 3.24 mg de óleo GAE/kg). Este estudo mostrou que a extração de CO2 supercrítico é um método adequado para a entrega de um óleo de semente de uva de alta qualidade.

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