江苏3种大戟属野生植物总脂含量及脂肪酸组分分析
Analysis of Total Lipid Contents and Fatty Acids Composition of Three Species of Euphorbia in Jiangsu Province
-
摘要: 利用索氏抽提法提取并采用气相色谱法测定了大戟属能源植物续随子的江苏野生近缘种甘肃大戟、乳浆大戟和钩腺大戟不同组织总脂含量、种子中总脂的脂肪酸组成及GC含量。结果表明,其茎、叶、种皮、种子及块根中,种子的总脂含量最高,在3个物种中分别为 37.29%、24.50% 和 24.85%,其次是叶和茎,种皮含量最小;甘肃大戟种子的总脂含量高达 37.29%,具有较好的开发潜力;3种植物种子总脂的脂肪酸组成中二十碳以下(多数为十八碳)的脂肪酸总和均为 90% 以上,甘肃大戟种子的总脂中二十碳以下的脂肪酸的总和甚至超过 99%,在碳链长度上与理想的生物柴油组分接近,但3种大戟种子的总脂中亚麻酸比例在 53% 以上,生产出的生物柴油稳定性较差。Abstract: Total lipid contents in different tissues from three Euphorbia lathyris L.related species including E.kansuensis Prokh., E.esula L. and E.sieboldiana Morr. & Decne. were determined by Soxhlet extraction method. Relative contents and composition of fatty acids in their seed oils were analyzed by gas chromatography. The results showed that total lipid contents werehighest in the seeds of these three species (37.29%, 24.50% and 24.85%, respectively), lower in leaves and stems, and lowest in seed shell. E.kansuensishad good potential for development as itshigh seed oil content of 37.29%. Total contents of fatty acids (E.kansuensis. The carbon chain length of the fatty acids was quite similar with that of the ideal biodiesel, but linolenic acid content was above 53% of total lipid, which would result it in reduced stability of the produced biodiesel.
下载: