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Research Article Open access CC BY 4.0

Fatty Acid Composition and Physicochemical Properties of Four Varieties of Citrullus lanatus Seed Oils Cultivated in Côte d’Ivoire

Anne Marie Niangoran N’guetta, Yolande Dogoré Digbeu, Siaka Binate, Jean Parfait Eugène N’guessan Kouadio, Soumaïla Dabonné, Edmond Ahipo Dué

Biotechnology Journal International · pp. 140–147 · Published 31 Dec 2014

10.9734/BBJ/2015/12371

Abstract

Fatty Acid Composition and Physicochemical Properties of Four Varieties of Citrullus lanatus Seed Oils Cultivated in Côte d’Ivoire In this study, the physicochemical properties and fatty acids composition of four varieties of Citrullus lanatus seed oils cultivated in Côte d’Ivoire were investigated. There was one variety (Bebu cultivar) with oval flat seeds and thick edges (COS), and three varieties (wlêwlê cultivars) with flat seeds disentangled and sharp extremity of various size (big seed (CBS), average seed (CAS) and small seed (CSS)). The pH at 30ºC was ranged from 5.85±0.003-6.03±0.001. The results for density (g/ml), refractive index, unsaponifiable matter (% of oil) and impurity (%) were 0.876±0.005-0.924±0.001; 1.4595±0.004-1.4739±0.001; 0.89±0.450-2.07±0.160; 0.05±0.002-0.1±0.001; respectively. The free fatty acid (%), acid value (mgKOH/g oil), peroxide index (meq O2/kg oil), saponification value (mgKOH/g oil), iodine value (mg of g I2/100 g oil), Total polyphénolics content (mg gallic acid/kg oil) values of the oils were obtained in the range; 0.80±0.050-2.03±0.010; 6.03±0.350-7.93±0.100; 10.93±0.470-13.80±0.100; 228.43±0.040-244.76±0.010; 84.07±11.250-93.38±1.090; 0.125±0.050-0.291±0.010; respectively. The most abundant fatty acid detected in the four oils was oleic acid ranged from 46.56-59.97. This acid constituted with the aldaic acid, the monounsaturated fatty acids in these oils and accounted for 64.82-73.07. This study showed the presence of others main saturated fatty acids as stearic acid and palmitic acid. The properties of these oils were quite comparable to those of previously  reported cucurbitaceaes seeds oils, suggesting their potential use as good table and cooking oils. With a high yield of oil and physicochemical characteristics similar to those of the other commercial edible oils, the Citrullus lanatus seed oil can be considered as a new and valuable source of edible oil. This study also showed potential for Citrullus lanatus seeds oils to ave relatively high oxidative stability that would be suitable for food and industrial applications.

Citrullus lanatus varieties seed oil physicochemical properties fatty acids composition

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