Physicochemical/GC-MS Characteristics of Oil and Soap Produced from Cucumis melo Linn Seed Extracts
M. K. Gafar, A. U. Itodo, Aliyu Ahmad Warra, G. Wyasu, Nura Salisu
Abstract
M. K. Gafar, A. U. Itodo, Aliyu Ahmad Warra, G. Wyasu, Nura Salisu
Abstract
The cantaloupe or sweet melon Cucumis melo Linn seed oil was extracted from powder sample of the seeds using Soxhlet extraction method with n-hexane as the solvent. The powder seeds sample gave 38.33% oil yield with density of 0.94 g/cm 3 . The oil was yellow in colour with a fried smell. The chemical analysis of the oil revealed iodine value of 36.42 ± 0.36 Ig/100g, acid value of 0.60 ± 0.30 mg KOH/g and saponification value of 116.88 ± 0.97 mg KOH/g. The GC-MS analysis of the oil revealed six different compounds among which three are free fatty acids palmitic acid, cis-9-cis-12-linoleic acid (grape seed oil) and methyl ester oleic acid and the rest are, two ketonic compounds 3,3-dimethyl-2- hexanone and 2,3-epoxy-2-hexanone and a nitro-alkane 2-nitro hexane. The oil was used to produce a soft texture soap with a milky colour which is slightly soluble in water. The solution of the soap has a foam height of 6 cm and pH value of 8.5 which falls within the range approved by the National Agency for Food and Drug Administration and Control. This oil from cantaloupe seeds shows that it has a promising future not only in cosmetics and pharmaceutical industries but also in food industries.
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The cantaloupe or sweet melon Cucumis melo Linn seed oil was extracted from powder sample of the seeds using Soxhlet extraction method with n-hexane as the solvent. The powder seeds sample gave 38.33% oil yield with density of 0.94 g/cm 3 . The oil was yellow in colour with a fried smell. The chemical analysis of the oil revealed iodine value of 36.42 ± 0.36 Ig/100g, acid value of 0.60 ± 0.30 mg KOH/g and saponification value of 116.88 ± 0.97 mg KOH/g. The GC-MS analysis of the oil revealed six different compounds among which three are free fatty acids palmitic acid, cis-9-cis-12-linoleic acid (grape seed oil) and methyl ester oleic acid and the rest are, two ketonic compounds 3,3-dimethyl-2- hexanone and 2,3-epoxy-2-hexanone and a nitro-alkane 2-nitro hexane. The oil was used to produce a soft texture soap with a milky colour which is slightly soluble in water. The solution of the soap has a foam height of 6 cm and pH value of 8.5 which falls within the range approved by the National Agency for Food and Drug Administration and Control. This oil from cantaloupe seeds shows that it has a promising future not only in cosmetics and pharmaceutical industries but also in food industries.
Key concepts: Saponification value, Chemistry, Linoleic acid, Oleic acid, Food science, Iodine value, Palmitic acid, Acid value