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Research Article
Solanum nigrum L. Seeds as an Alternative Source of Edible Lipids and Nutriment in Congo Brazzaville

J.M. Nzikou, M. Mvoula-Tsieri, L. Matos, E. Matouba, A.C. Ngakegni-Limbili, M. Linder and S. Desobry

Journal of Applied Sciences, 2007, 7(8), 1107-1115.

Abstract

Solanum nigrum L. seeds have been subjected to standard analytical techniques in order to evaluate proximate composition, physicochemical properties and contents of nutritional valuable elements and fatty acids of the seeds and oils. Physicochemical analysis indicate that the oil content was 37.12±0.75 and 38.88±0.4 for Bligh and Dyer and Folch method, respectively. The seeds are rich in protein (17.66±0.67 g/100 g) and carbohydrate (33.48±35.24 g/100 g). Solanum nigrum L. seeds have ash content of 7.18% (with the presence of following minerals: Ca, K, Na and Mg) moisture content is of 3.86 ±0. 97%. Of green color Solanum nigrum L. seeds oil has the fatty acid composition following: 18:2n-6 (67.77%), 18:1n-9 (14.59%), 16:0 (12.46%) and 18:0 (4.31%) and 18:3n-3(0.63%). DSC analysis shows three peaks; two at low melting point (-36 and 21.23°C) and one high melting point at 31°C. The majors TAG in Solanum nigrum L. seeds oil are Oleodilinolein (OLL) at 56.54% of total triacylglycerols followed by palmitooleo-linolein (POL) and dioleolinolein (OOL) varying between 14.79 and 22.04%. The oil extracts exhibited good physicochemical properties and could be useful as edible oils and for industrial applications.

ASCI-ID: 35-1742

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