枇杷（Eriobotrya japonica Lindl.）果皮提取物在大豆油中的抗氧化作用。
Antioxidative effect of loquat (Eriobotrya japonica Lindl.) fruit skin extract in soybean oil.
机构信息
Department of Food Science and Technology, Sari Agriculture and Natural Resources University Sari, Mazandaran, Iran.
Department of Food Science and Technology, Faculty of Agriculture, Tarbiat Modares University Tehran, Iran.
出版信息
Food Sci Nutr. 2015 Jan;3(1):74-80. doi: 10.1002/fsn3.193. Epub 2014 Dec 18.
The aim of this study was to compare the effects of solvent and ultrasound-assisted extraction methods with supercritical fluid extraction on antioxidant activity of loquat (Eriobotrya japonica Lindl.) fruit skin extract in stability of soybean oil at 25°C. Oxidative stability alterations of soybean oils containing 400 (SEA) and 1000 ppm (SEB) of ethanol extract, 400 (SSA) and 1000 ppm (SSB) of supercritical CO2 extract, 400 (SUA) and 1000 ppm (SUB) of ultrasound-assisted extract, and 100 ppm of tertiary butylhydroquinone (TBHQ) were monitored by measuring the peroxide value, thiobarbituric acid value, free fatty acids, conjugated dienes and trienes values. Oxidative changes in SEA were lower than that of oils treated with other extracts, but the best protection was observed in soybean oil consisting TBHQ. The solvent extraction method produces the maximum amount of phenolic and tocopherol compounds from loquat fruit skin. Therefore, solvent extraction method had a better effect on antioxidant activity of the loquat fruit skin extract.
本研究旨在比较溶剂提取法、超声辅助提取法和超临界流体萃取法对枇杷（Eriobotrya japonica Lindl.）果皮提取物抗氧化活性的影响，以及在 25°C 下对大豆油稳定性的影响。通过测量过氧化物值、硫代巴比妥酸值、游离脂肪酸值、共轭二烯和三烯值，监测含有 400（SEA）和 1000ppm（SEB）乙醇提取物、400（SSA）和 1000ppm（SSB）超临界 CO2 提取物、400（SUA）和 1000ppm（SUB）超声辅助提取物以及 100ppm 叔丁基对苯二酚（TBHQ）的大豆油的氧化稳定性变化。SEA 的氧化变化低于用其他提取物处理的油，但在含有 TBHQ 的大豆油中观察到了最佳的保护作用。溶剂提取法从枇杷果皮中提取出最多的酚类和生育酚化合物。因此，溶剂提取法对枇杷果皮提取物的抗氧化活性有更好的效果。
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