Grasas y Aceites, Vol 52, No 2 (2001)

Chemical characteristics of Solanum sisymbriifolium lam seed oil and residual seed meal


https://doi.org/10.3989/gya.2001.v52.i2.383

S. M. Nolasco
Facultad de Ingeniería, Universidad Nacional del Centro de la Provincia de Bs. As., Argentina

O. E. Quiroga
Facultad de Ingeniería, Universidad Nacional del Centro de la Provincia de Bs. As., Argentina

A. Pereyra
Departamento de Química Orgánica, Area Bromatología. Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina

B. Wiese
Facultad de Ingeniería, Universidad Nacional del Centro de la Provincia de Bs. As., Argentina

Abstract


Seeds from Solanum sisymbriifolium Lam harvested at Olavarría (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.

Keywords


Chemical composition; Fatty acid; Meal; Oil; Seed; Solanum sisymbriifolium Lam

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