State Key Laboratory of Food Science and Technology, Jiangnan University, China; National Engineering Research Center for Functional Food, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, China.
Department of Chemistry, School of Physical Science, University of Liverpool, China.
Food Chem. 2020 Dec 1;332:127408. doi: 10.1016/j.foodchem.2020.127408. Epub 2020 Jun 24.
A research was performed to determine and compare the physicochemical properties, chemical compositions and in vitro antioxidant activities of Paeonia lactiflora Pall seed oils with ultrasonic-assisted solvent extraction, pressing and supercritical fluid extraction. Paeonia lactiflora Pall seed oil contained a high percentage of polyunsaturated fatty acids and monounsaturated fatty acids, especially oleic (31.62-32.88%) and α-linolenic acids (37.55-39.95%). The beneficial multiple dietary phytochemicals (tocopherol, phytosterols and squalene) and in vitro antioxidant activity were significantly influenced by the hull and processing method (P＜0.05). However, higher tocopherol (596.67-738.76 mg/kg) and phytosterols (5775.01-6055.62 mg/kg) contents were found in supercritical fluid extraction oils. Additionally, ten individual polyphenols were quantified, and significantly influenced by the hull and processing method (P＜0.05), with the content of benzoic acid and several individual flavonoids being the higher. According to the results, pressing might be the best process for extracting oil with a high number of polyphenols.
进行了一项研究，以确定和比较超声辅助溶剂萃取、压榨和超临界流体萃取法提取的牡丹籽油的理化性质、化学成分和体外抗氧化活性。牡丹籽油含有高比例的多不饱和脂肪酸和单不饱和脂肪酸，特别是油酸（31.62-32.88%）和α-亚麻酸（37.55-39.95%）。有益的多种膳食植物化学成分（生育酚、植物甾醇和角鲨烯）和体外抗氧化活性受到壳和加工方法的显著影响（P＜0.05）。然而，超临界流体萃取油中发现了更高的生育酚（596.67-738.76 mg/kg）和植物甾醇（5775.01-6055.62 mg/kg）含量。此外，还定量了十种单体多酚，其含量受到壳和加工方法的显著影响（P＜0.05），其中苯甲酸和几种单体类黄酮的含量较高。根据研究结果，压榨可能是提取富含多酚的油的最佳工艺。
