pnut pnut Peanut Science 0095-3679 0095-3679 American Peanut Research and Education Society 10.3146/i0095-3679-22-2-2 Articles Lipid, Protein, and Ash Contents, and Fatty Acid and Sterol Compositions of Peanut (Arachis hypogaea L.) Seeds from Ecuador Nelson R. Grosso * and Carlos A. Guzmán 1 Cátedra de Química Biológica, Facultad de Ciencias Agropecuarias, Univ. Nacional de Córdoba, Av. Valparaíso s/n and Cátedra de Química Orgánica, Facultad de Ciencias Exactas Físicas y Naturales, Univ. Nacional de Córdoba, IMBIV-CONICET, Av. Velez Sarsfield 299, 5000 Córdoba, Argentina *Corresponding author. 7 1995 22 2 84 89 27 10 1995 Copyright © 1995 American Peanut Research and Education Society 1995 American Peanut Research and Education Society Abstract

Oil and protein percentages, ash, iodine value, fatty acid and sterol compositions were studied in 28 Arachis hypogaea L. cultivars originating from Ecuador. Results showed lower protein percentages in the varieties hypogaea (27.3%) and hirsuta (25.9%) than in the varieties fastigiata (29.4%), peruviana (29.4%), and aequatoriana (31.3%). The principal fatty acids were linoleic and oleic. The variety hypogaea exhibited higher concentrations of oleic acid (45.1%). The sterol composition showed higher concentration of β-sitosterol following by campesterol, stigmasterol, and Δ5-avenasterol.

 Key Words Oil; , protein; , fatty acids; , sterols; , seeds; , groundnut