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Major Extractable Components in Asclepias linaria (Asclepiadaceae) and Ilex verticillata (Aquifoliaceae), Two Potential Hydrocarbon Crops

Los Componentes Mayores enAsclepias linaria (Asclepiadaceae) yIlex verticillata (Aquifoliaceae), Dos Cosechas Hidrocarburas Posibles

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Abstract

The major extractable components of two species identified as having high oil or polyphenol contents were characterized in detail.Asclepias linaria, a desert milkweed, contains 30.3% extractable material on a dry-weight basis, andIlex verticillata contains 41.5% extractable material on a dry-weight basis. Important components inA. linaria oil fractions are triterpene alcohols and esters, wax, and natural rubber; fatty acid triglycerides were nearly absent.Ilex verticillata oil fractions were predominantly triglycerides with some triterpene fatty acid esters. The more polar polyphenol fraction contained sugars and sugar esters of fatty acids and triterpene acids. The polyphenol fraction from these plants is better described as a saponin fraction. Because the crude saponin fraction represents 10.7% of the dry weight of A. linaria and 18.9% of the dry weight ofI. verticillata and because the saponin fractions showed good emulsifying properties, the refined extract of these plants might be used as a biodegradable surfactant.

Resumen

Los componentes mayores que se pueden extraer de dos especies identificadas como teniendo cantidades de mucha esencia o cantidades de polifenolfueron caracterizados en detalle.Asclepias linaria, un vencetósigo del desierto, tiene 30.3% material que se puede extraer en un base de peso seco, yIlex verticillata tiene 41.5% material que se puede extraer en un base de peso seco. Componentes importantes enA. linaria fracciones de esencia son alcoholes de triterpenos y ésteres, cera, y goma natural. Triglicéridos de acidos grasos casifueron no existentes.Ilex verticillata fracciones de esencia fueron triglicéridos predominantemente con algunas ésteres triterpenos de acidos grasos. La fractión polifenol mas polar contuvi azucares y ésteres de azucar de acidos grasos y acidos triterpenos. La fractión polifenol de estas plantas esta describida como una fractión saponina. Porque la fractión saponina cruda representa 10.7% del peso seco deA. linaria y 18.9% del peso seco deI. verticillata y porque las fracciónes saponinas muestraron buenas propiedades de emulsiar, es posible usar el extracto refinado de estas plantas como un detergente biogradable.

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Abbott, T.P., Peterson, R.E., Tjarks, L.W. et al. Major Extractable Components in Asclepias linaria (Asclepiadaceae) and Ilex verticillata (Aquifoliaceae), Two Potential Hydrocarbon Crops. Econ Bot 44, 278–284 (1990). https://doi.org/10.1007/BF02860492

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