PEREZ Ethel Erminia
Chemical Characterization of Oils and Meals from Wild Sunflower (Helianthus petiolaris Nutt)
E. E. PÉREZ; A. A. CARELLI; G. H. CRAPISTE
JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY (JAOCS)
Año: 2004 p. 245 - 245
Chemical characterizations of oils and meals from the wild sunflower species (Helianthus Petiolaris Nutt) and their comparison with those from cultivated sunflower (Helianthus Annus) were performed. Seeds from spontaneous populations of Helianthus petiolaris were harvested in Argentina at different years. The analytical parameters studied were; i) fatty acid profile, peroxide value, p-anisidine value, metals, oxidative stability, phosphorus and phospholipids content, tocopherols, polar compounds and waxes in the extracted oils; ii) moisture, ash, crude fiber, metals, sugars, urease activity, starch, protein, available lysine, neutral detergent fiber, acid detergent fiber, lignin, gross energy and amino acid content in the residual meals. The products from wild sunflower seed, that rendered 27-30% of oil by solvent extraction, showed some characteristics similar to the commercial products. Nevertheless, the oil had less quality and stability due to the major unsaturation and the lower concentration of antioxidant components, while the meal had a lower protein content. The phospholipid content was significantly lower than in industrial crude sunflower oils. Most important parameters in the meal as available lysine, gross energy, and digestibility compared favorably with those for cultivated sunflower meals. The results showed the potential use of these meals for animal feeding. Key words: amino acids, chromatography, helianthus petiolaris, meal, oil, quality, waxes, wild sunflower.