Evaluation of Indian milkweed (Calotropis gigantea) seed oil as alternative feedstock for biodiesel
Evaluation of Indian milkweed (Calotropis gigantea) seed oil as alternative feedstock for biodiesel
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DOI：
10.1016/j.indcrop.2014.01.029
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发表时间：
2014-03
影响因子：
5.9
通讯作者：
Zan Win Moh Moh Phoo-Zan-Win-Moh-Moh-Phoo-2049769183;L. Razon;G. Knothe;Z. Ilham;F. Goembira;C. Madrazo;S. Roces;S. Saka
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文献类型：
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作者：
Zan Win Moh Moh Phoo-Zan-Win-Moh-Moh-Phoo-2049769183;L. Razon;G. Knothe;Z. Ilham;F. Goembira;C. Madrazo;S. Roces;S. Saka
Calotropis gigantea（印度马利筋）是亚洲的一种常见植物，作为杂草生长在露天荒地上。全年开花和结果。在这项研究中，印度马利筋油被评估为生物柴油生产的潜在原料。在索氏提取器中用己烷从印度马利筋种子中提取油。发现种子含有 33.3 wt% 的油。分析提取的油的脂肪酸谱和油的性质。鉴定出了几种以前未报道的次要脂肪酸。由于油中游离脂肪酸含量为27.5 wt%，因此进行酸催化酯化反应来酯化游离脂肪酸，并进行碱催化酯交换反应来生产生物柴油。测定制备的生物柴油的甘油三酯含量、甘油二酯含量、单甘油酯含量、游离甘油、甲醇、酯含量、残炭、酸值、氧化安定性、生育酚、含水量、运动粘度、密度、浊点和闪点。除氧化稳定性外，所有燃料性能均符合四项标准（菲律宾国家标准 PNS2020:2003、日本汽车标准组织 JASO M360、欧洲标准 EN 14214、美国材料试验协会 ASTM D6751）。然而，人们发现这种生物柴油由于冷流性能较差，只能在热带国家使用。
Calotropis gigantea(Indian milkweed) is a common plant in Asia that grows as a weed on open waste ground. Flowering and fruiting take place throughout the year. In this study, Indian milkweed oil was evaluated as a potential feedstock for biodiesel production. The oil was extracted from Indian milkweed seeds with hexane in a Soxhlet apparatus. The seeds were found to contain 33.3 wt% oil. The extracted oil was analyzed for the fatty acid profile and oil properties. Several previously unreported minor fatty acids were identified. Because the free fatty acid content in the oil was 27.5 wt%, acid-catalyzed esterification was conducted to esterify free fatty acids and alkali-catalyzed transesterification was performed to produce biodiesel. The triglyceride content, diglyceride content, monoglyceride content, free glycerol, methanol, ester content, carbon residue, acid value, oxidation stability, tocopherol, water content, kinematic viscosity, density, cloud point and flash point of the prepared biodiesel were determined. With the exception of oxidation stability, all fuel properties conformed to four standards (Philippine National Standard PNS2020:2003, Japanese Automotive Standards Organization JASO M360, European Standard EN 14214, American Society for Testing Materials ASTM D6751). However, it was found that this biodiesel can be only used in tropical countries due to the poor cold flow properties.