Grasas y Aceites, Vol 51, No 4 (2000)

Studies on seed of Hypochaeris variegata L. (Baker): seed oil and residual seed meal


https://doi.org/10.3989/gya.2000.v51.i4.414

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

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

M. S. Vigo
Departamento de Química Orgánica, Area Bromatología. Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina

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

Abstract


Seeds from Hypochaeris variegata L. (Baker) harvested at Olavarría (Buenos Aires, Argentine) were defatted with hexane and the raw oil obtained with a yield of 24,7% dry basis. The crude oil was examined in their physicochemical characteristics had refractive index of 1,4637 (at 25ºC), iodine value of 125,2, saponification index of 188,4, unsaponifiable matter of 8,5 % and free fatty acid content of 9,7 (mg KOH/g). Gas chromatographic analysis of the oil revealed high levels of linoleic acid (66,2%), appreciable amount of linolenic and erucic acids. The residual seed meal contained 35,49% of crude protein and 35,1% of crude fiber. Total and phytic acid phosphorous, calcium, ash, sugar and polisaccharides (non presence of starch) contents are reported.

Keywords


Chemical composition; Fatty acid (composition in); Hypochaeris variegata L. (Baker); Meal; Oil; Seed

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