The increased cost of biodiesel production from edible oils has motivated the researchers to find alternative non-edible oil feedstocks. has been identified as a promising tropical and subtropical perennial energy crop for biodiesel production. However, securing adequate oil for sustainable biodiesel production is not achieved yet. Therefore, the present study sought to investigate the potential and suitability of grown at different areas of Ethiopia for biodiesel production using analytical, instrumental, and empirical methods. The dry weight proportion of seeds, seed coats, and kernels were significantly varied across growing ecologies. The oil contents of kernels were reneged between 47.10–59.32%, while the free fatty acid content of all sampled oils was less than 2.7%. The estimated iodine and saponification values were ranged between 99.6–112.6 mg and 180.9–202.0 mg KOH per gram of oil, respectively. Oleic (34.2–42.2%) and Linoleic (34.8–41.8%) acids dominated the fatty acid composition of viscosity, density, cold filter plugging point, and cetane numbers The k-means cluster revealed that kernels harvested from different geographic locations were grouped in the same cluster, which indicates that the effect of altitudinal variation on the oil content of J. curcas was not significant. However, at too lower and higher altitudes, the kernel’s oil content has significantly declined. In conclusion, Ethiopian variety oil showed suitable physicochemical properties for biodiesel production. However, its yield, composition, and physicochemical properties were significantly varied across growing areas.

中文翻译：

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描述埃塞俄比亚品种麻风树生产生物柴油的潜力和适用性：不同种植地区的油产量和理化性质的差异

从食用油生产生物柴油的成本增加促使研究人员寻找替代的非食用油原料。已被确定为一种有前途的热带和亚热带多年生能源作物，用于生产生物柴油。然而，确保可持续生物柴油生产所需的充足石油尚未实现。因此，本研究试图利用分析、仪器和经验方法来调查埃塞俄比亚不同地区种植的生物柴油生产的潜力和适宜性。种子、种皮和籽粒的干重比例在不同的生长生态环境中存在显着差异。仁的含油量在47.10%~59.32%之间，而所有取样油的游离脂肪酸含量均低于2.7%。估计的碘和皂化值分别在每克油 99.6–112.6 毫克和 180.9–202.0 毫克 KOH 之间。油酸 (34.2–42.2%) 和亚油酸 (34.8–41.8%) 在粘度、密度、冷滤点和十六烷值的脂肪酸组成中占主导地位。 k 均值聚类显示，从不同地理位置收获的籽粒分为以下几类：同一簇，说明海拔变化对麻疯树含油量影响不显着。然而，在海拔太低和太高的情况下，籽粒的含油量显着下降。总之，埃塞俄比亚品种油表现出适合生物柴油生产的理化特性。然而，其产量、成分和理化性质在不同种植地区存在显着差异。