The Assessment of Two Species of Soapberry as Resources for High-Quality Biodiesel Production with an Optimized Method of Ultrasound-Assisted Oil Extraction

文献类型： 外文期刊

第一作者： Zhang, Yun-Qi

作者： Zhang, Yun-Qi;Duan, Jie;Zhao, Guo-Chun;Xu, Yuan-Yuan;Liu, Ji-Ming;Jia, Li-Ming;Su, Shu-Cha;Zhang, Yun-Qi;Hao, Yan-Bin;Jin, Lin

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关键词： Sapindus delavayi; ultrasound-assisted extraction; response surface methodology; fatty acid profiles; biodiesel properties

期刊名称：FORESTS （ 影响因子：2.633； 五年影响因子：2.804 ）

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年卷期： 2020 年 11 卷 2 期

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收录情况： SCI

摘要： Biodiesel has many advantages, yet its high price has become the main obstacle to market acceptance. Selecting non-edible woody oil plant resources and optimizing the oil extraction process will contribute to the effective utilization of raw materials and development of the related biodiesel industry. This study presents a detailed evaluation of two Sapindus species (Sapindus delavayi (Franch.) Radlk. and Sapindus mukorossi Gaertn.) as promising feedstocks for biodiesel production. As ultrasonic-assisted extraction (UAE) is considered a green and efficient oil extraction method, the process was optimized by response surface methodology (RSM) using a Box-Behnken design (BBD) in our study. The kernel oil yield of S. delavayi was up to 43.67% +/- 0.16% under the optimized extraction conditions (the ultrasonic power was 109W, extracting at 65 degrees C for 25 min, and the liquid-solid ratio was 9 mL center dot g(-1)). The kernel oil yield of S. mukorossi was as high as 45.96% +/- 0.21% under the optimized extraction conditions (the ultrasonic power was 114W, extracting at 68 degrees C for 26 min, and the liquid-solid ratio was 9 mL center dot g(-1)). The fatty acid profiles of S. delavayi and S. mukorossi kernel oils showed a high percentage of monounsaturated fatty acids (74.91% and 76.32%, respectively) and a low percentage of polyunsaturated fatty acids (11.11% and 7.83%, respectively) and saturated fatty acids (13.98% and 15.85%, respectively). Most of the properties of the two biodiesels conformed to EN 14214:2014, ASTM D6751-2018 and GB 25199-2017 standards, except for oxidation stability. In general, the results provided the optimized extraction method using ultrasound for the two species oil extraction and proved that the two kernel oils are potentially useful feedstocks for high-quality and low-cost biodiesel production.

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