College of Food Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, China.
Nutrition and Food Science Area, Preventive Medicine and Public Health, Food Science, Toxicology and Forensic Medicine Department, Faculty of Pharmacy, Universitat de València, Avda. Vicent Andrés Estellés, s/n, Burjassot 46100, Spain.
Molecules. 2017 Oct 22;22(10):1788. doi: 10.3390/molecules22101788.
The potential effects of three modern extraction technologies (cold-pressing, microwaves and subcritical fluids) on the recovery of oil from (Thouin) Koehne seeds have been evaluated and compared to those of conventional chemical extraction methods (Soxhlet extraction). This oil contains unsaturated fatty acids and polyphenols. Subcritical fluid extraction (SbFE) provided the highest yield-25.79 g oil/100 g dry seeds-of the three methods. Moreover, the fatty acid composition in the oil samples was analysed using gas chromatography-mass spectrometry. This analysis showed that the percentages of monounsaturated (46.61%), and polyunsaturated fatty acids (42.14%), after applying SbFE were higher than those obtained by Soxhlet, cold-pressing or microwave-assisted extraction. In addition, the oil obtained under optimized SbFE conditions (35 min extraction at 35 °C with four extraction cycles), showed significant polyphenol (527.36 mg GAE/kg oil), and flavonoid (15.32 mg RE/kg oil), content, had a good appearance and was of high quality.
已经评估并比较了三种现代提取技术（冷榨、微波和亚临界流体）与传统化学提取方法（索氏提取）对（Thouin）Koehne 种子中油的提取效果。这种油含有不饱和脂肪酸和多酚。在这三种方法中，亚临界流体提取（SbFE）提供了最高的产率-每 100 克干种子 25.79 克油。此外，使用气相色谱-质谱法对油样的脂肪酸组成进行了分析。该分析表明，应用 SbFE 后，油中的单不饱和（46.61%）和多不饱和脂肪酸（42.14%）的百分比高于索氏提取、冷榨或微波辅助提取所获得的百分比。此外，在优化的 SbFE 条件下（35°C 下提取 35 分钟，进行四轮萃取）获得的油，具有显著的多酚（527.36 毫克 GAE/千克油）和类黄酮（15.32 毫克 RE/千克油）含量，外观良好，质量高。
