Abstract
Seeds from Solanum sisymbriifolium Lam harvested at Olavarria (Buenos Aires, Argentine) were defatted with hexane and the raw oil obtained with a yield of 20,6 % dry basis. The physicochemical characteristics of crude oil were: refractive index: 1,4610 (at 25oC), iodine value: 112,8; saponification index: 170,0; unsaponifiable matter: 14,0 % and free fatty acid content: 2,4 (mg KOH/g). The fatty acid composition of seed oil was studied by gas-liquid chromatography. Major fatty acids of seed oil were: linoleic (52,3%), oleic (23,4 %) and palmitic acid (16,4 %). The residual seed meal contained moderate level of crude protein (14,75%, dry basis), low level of available lysine (2,25 g/16gN) and high content of crude fiber (51,5%, dry basis). Total and phytic acid phosphorous, calcium, ash, sugar and polysaccharides contents are reported.
Highlights
The residual seed meal contained moderate level of crude protein (14,75%, dry basis), low level of available lysine (2,25 g/16gN) and high content of crude fiber (51,5%, dry basis)
Seeds fr om Solanum sisymbriifolium Lam harvested at Olavarría
the raw oil obtained with a yield of 20,6 % dry basis
Summary
Caracterización química del aceite y harina residual de solanum sisymbriifolium lam Por S.M. Nolasco, O.E.Quiroga, A. Caracterización química del aceite y harina residual de solanum sisymbriifolium lam. Semillas de Solanum sisymbriifolium Lam cosechadas en Olavarría De Buenos Aires, Argentina) se trataron con hexano (soxhlet) obteniéndose el aceite crudo (rendimiento:20,6%) y la harina residual de extracción. Las características fisicoquímicas del aceite crudo fueron: Índice de refracción: 1.4610 (a 25oC); Índice de iodo: 112,8; Índice de saponificación: 170,0; Insaponificable: 14,0%, Índice de acidez: 2,4 (mgKOH/g). Se determinó la composición acídica del aceite por cromatografía gas-líquido. La harina residual de extracción contenía una moderada proporción de proteína cruda (14,75% b.s), baja proporción de lisina disponible (2,25 g/16gN) y un alto contenido de fibra cruda (51,5 %b.s). PALABRAS-CLAVE: Aceite - Ácidos grasos - Composición química - Harina - Semilla - Solanum sisymbriifolium Lam
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