几个不同产地的小油桐种子含油率及其脂肪酸组成

目的 比较我国的广东、海南、贵州和印度等地所产小油桐种子含油率及其脂肪酸组成.方法 采用索氏抽提法测定小油桐种子的含油率,采用GC-MS对小油桐油的脂肪酸组成进行分析.结果 不同产地的小油桐种子干基含油率分别为32.43%(广东)、31.41%(海南)、37.56%(贵州)和41.04%(印度);GC.MS鉴定出12种脂肪酸成分,其中不饱和脂肪酸分别占总脂肪酸的80.93%(广东)、79.53%(海南)、77.24%(贵州)和78.22%(印度).结论 不同产地的小油桐种子的含油率和脂肪酸组成方面均存在差异,这在小油桐引种与育种过程中应予以考虑.

Oil contents and fatty acid composition in Jatropha curcas seeds collected from different regions

OBJECTIVE: To compare the oil contents and fatty acid composition among the samples of Jatropha curcas L. seeds collected from China (Guangdong, Hainan, and Guizhou Provinces) and India. METHODS: Soxhlet extraction method and gas chromatography-mass spectrometry (GC-MS) were employed to determine the oil contents of Jatropha seeds and the fatty acid composition of Jatropha oil. RESULTS: The seed oil contents (dry basis) were 32.43% (Guangdong), 31.41% (Hainan), 37.56% (Guizhou) and 41.04% (India), respectively. Twelve different fatty acids were detected by GC-MS, and the content of total unsaturated fatty acids accounted for 80.93%, 79.53%, 77.24% and 78.22% of the total fatty acids in the samples collected from Guangdong, Hainan, Guizhou and India, respectively. CONCLUSION: There are differences in the oil contents and fatty acid composition among the J. curcas seeds collected from different regions, and attention should be given to these differences in the introduction and breeding of J. curcas.