Abstract
Seven oils, obtained from seven Sudanese oil bearing sources that are Albizia lebbek Oil (ALO), Cassia obtusifolia Oil (COO), Cassia occidentalis Oil (CCO), Abutilon pannosum Oil (APO), Mitracarpus villous Oil (MVO), Ipomea indica Oil (IIO) and Sesamum alatum Oil (SAO), were investigated. The seeds were collected in Sudan from Ghibaish, North Kordofan state. In addition to the oil content, the fatty acid was determined by capillary gas chromatography and the tocopherols were evaluated by highperformance liquid chromatography. The oil content of the seven seeds amounted to 12.8, 7.0, 3.2, 7.1, 11.5, 8.8, and 21.3%, respectively.The oils contained 16.4, 20.0, 14.3, 16.8, 19.4, 19.9 and 10.9 % palmitic acid and 21.0, 24.4, 22.1, 10.9, 27.7, 34.0, 45.1 % oleic acid, and 43.8, 38.2, 45.0, 63.9, 34.6, 33.5, 36.3 % linoleic acid and traces of linolenic acid, respectively.The tocopherol content of these oils amounted to 85.6, 48.2, 32.7, 163.5, 52.5, 30.9, and 26.4 mg/100 g oil, respectively. Alpha-tocopherol was the predominant tocopherol in the oil of Albizia lebbek, Cassia obtusifolia, Cassia occidentalis , and Abutilon pannosum , while gamma-tocopherol was the predominant tocopherol in the oil of Mitracarpus villous, Ipomea indica and Sesamum alatum .
Highlights
Albizia lebbek (L Benth.), family Mimosaceae is a fast growing nitrogen-fixing, heavy shade tree, recommended for reforestation and firewood plantations
Fernandez et al, (1996) reported the use of Albizia lebbek seed pods for water softening by the adsorption of calcium at 25 °C and they mentioned that the adsorption increased with the pH value
Seeds of Albizia lebbek, Cassia obtusifolia, Cassia occidentalis, Abutilon pannosum, Mitracarpus villous, Ipomea indica and Sesamum alatum were collected from Ghibaish, North Kordofan State, Sudan
Summary
Albizia lebbek (L Benth.), family Mimosaceae is a fast growing nitrogen-fixing, heavy shade tree, recommended for reforestation and firewood plantations. Bark containing saponin can be used in making soap, and containing tannin, can be used for tanning. Seeds have yielded 5.3-6.8 % fixed oil or fat, the endosperm 11 %. Bark contains 5-15 % tannin (leaves contain ca 4 %) and saponins. The saponin from the seed yields oleanolic acid and albizziagenin (Mitchell and Rook, 1979). Fernandez et al, (1996) reported the use of Albizia lebbek seed pods for water softening by the adsorption of calcium at 25 °C and they mentioned that the adsorption increased with the pH value. The seeds of Albizia lebbek contain 33.60 % crude protein and 3.13% crude fat, while the pods contain 17.86 % crude protein and 2.6 % crude fat. Prohibitive levels of toxic compounds were not detected in any of the plant parts analyzed (Roskoski et al 1980)
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