Abstract
▶ This study was conducted on the properties of the oil extracted from Albizia julibrissin seeds. The oil content of the seeds, the free fatty acid, the peroxide value, the saponification value, the iodine value of the oil were 10.50%, 2.54%, 6.61 mequiv. O2/kg of oil, 190.63 (mg KOH/g) and 111.33 (g/100g of oil), respectively. ▶ Linoleic acid (58.58%), palmitic acid (13.86%) and oleic acid (10.47%) were the dominant fatty acids in the A.julibrissin seed oil. LLL (36.87%), OLL (21.62%), PLL (16.69%) and PLO+SLL (8.59%) were the abundant triacylglycerols(L: linoleic, O: oleic, P: palmitic, S: stearic). ▶ The DSC melting curves reveal that: melting point=−14.70̊ C and melting enthalpy=54.34 J/g. A.julibrissin seed oil showed some absorbance in the UV-B and UV-C ranges. ▶ The characterization of A. julibrissin seed oil shows that it could be successfully used for making soap, hair shampoo and in formulation of UV protectors in cosmetic. ▶ Furthermore, the high level of polyunsaturated fatty acids makes it desirable in terms of nutrition, and might be an acceptable substitute for highly polyunsaturated oils such soybean oil in diets.This new promising A. julibrissin crop can potentially create new rural jobs when used for industrial products.
The physicochemical characteristics, fatty acid and triacylglycerol compositions, DSC profile and UV/vis spectrum of oil extracted from Albizia julibrissin seeds were determined in this study. The oil content and the moisture of the seeds were 10.50% and 1.56%. The free fatty acid, the peroxide value, the p-anisidine value, the saponification value, the iodine value were 2.54%, 6.61mequiv. O2/kg of oil, 1.98, 190.63 (mg KOH/g) and 111.33 (g/100g of oil), respectively. The specific extinction coefficients K232, K268 were 7.55 and 0.96, respectively. Linoleic acid (C18:2, 58.58%), palmitic acid (C16, 13.86%) and oleic acid (C18:1, 10.47%) were the dominant fatty acids in the A. julibrissin seed oil. LLL (36.87%), OLL (21.62%), PLL (16.69%) and PLO+SLL (8.59%) were the abundant triacylglycerol representing>83% of the seed oil (L: linoleic, O: oleic, P: palmitic, S: stearic). The DSC melting curves reveal that: melting point=−14.70°C and melting enthalpy=54.34J/g. A. julibrissin seed oil showed some absorbance in the UV-B and UV-C ranges. The results of the present analytical study show that A. julibrissin is a promising oilseed crop, which can be used for making soap, hair shampoo and UV protectors. Furthermore, the high level of unsaturated fatty acids makes it desirable in terms of nutrition.