Grasas y Aceites, Vol 50, No 3 (1999)

Chemical composition of aboriginal peanut (Arachis hypogaea L.) seeds from Uruguay.


https://doi.org/10.3989/gya.1999.v50.i3.657

Nelson R. Grosso
Cátedra de Química Biológica, Facultad de Ciencias Agropecuarias (UNC), ICTA, IMBIV-CONICET, Argentina

Enrique I. Lucini
Cátedra de Química Biológica, Facultad de Ciencias Agropecuarias (UNC), ICTA, IMBIV-CONICET, Argentina

Abel G. López
Instituto de Ciencias y Tecnología de los Alimentos (ICTA), Facultad de Ciencias Exactas Físicas y Naturales (UNC), IMBIV-CONICET, Argentina

Carlos A. Guzmán
Instituto de Ciencias y Tecnología de los Alimentos (ICTA), Facultad de Ciencias Exactas Físicas y Naturales (UNC), IMBIV-CONICET, Argentina

Abstract


Oil, protein, carbohydrate and ash contents, iodine value, and fatty acid and sterol compositions were studied in seed of 9 aboriginal (Arachis hypogaea subsp. fastigiata var. vulgaris cultivars originating from Uruguay. They showed a high protein level as other varieties of the subspecie fastigiata (these protein percentages are higher than varieties of subspecie (hypogaea ). Palmitic (16:0), stearic (18:0), oleic (18:1), linoleic (18:2), arachidic (20:0), eicosenoic (20:1), behenic (22:0), and lignoceric (24:0) acids were detected. The cultivar 7 Uv showed higher oleic acid content (42.53%) and 0/L ratio (1.09). The cultivars 2 Uv and 5 Uv had higher percentage in linoleic acid (43.67% and 43.40%, respectively). The cultivar 3 Uv and 4 Uv exhibited lower iodine value (104.90 and 104.73, respectively). Cholesterol, campesterol, stigmasterol, β-sitosterol, Δ5-avenasterol, Δ7-estigmasteroI and Δ7-avenasterol were detected in the sterols, β-sitosterol was the most abundant. Significant difference was only found for stigmasterol. The chemical quality of these seeds is characterized by higher protein levels and oils with lower O/L ratio and higher iodine value.

Keywords


Chemical composition; Peanut; Seed; Uruguay

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