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Antioxidant effect of supercritical CO2 extracted Nigella sativa L. seed extract on deep fried oil quality parameters

机译:超临界CO2提取黑种子提取物对油炸油质量参数的抗氧化作用。

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摘要

Effect of supercritical CO2 extracted Nigella sativa L. seed extract (NE) on frying performance of sunflower oil and refined, bleached and deodorized (RBD) palm olein was investigated at concentrations of 1.2 % and 1.0 % respectively. Two frying systems containing 0 % N. sativa L. extract (Control) and 0.02 % butylated hydroxytoluene (BHT) were used for comparison. Physicochemical properties such as fatty acid composition (FAC), Peroxide Value (PV), Anisidine Value (AV), Totox Value (TV), Total Polar Content (TPC), C18:2/C16:0 ratio and viscosity of frying oils were determined during five consecutive days of frying. Results have shown that N. sativa L. extract was able to improve the oxidative stability of both frying oils during the frying process compared to control. The stabilizing effect of antioxidants were in the order of BHT > NE. RBD palm olein was found to be more stable than sunflower oil based on the ratio of linoleic acid (C18:2) to palmitic acid (C16:0) and fatty acid composition.
机译:研究了超临界CO2提取的Nigella sativa L.种子提取物(NE)对葵花籽油和精制,漂白和除臭(RBD)棕榈油精的煎炸性能的影响,浓度分别为1.2%和1.0%。用于比较的两个油炸体系分别为0%苜蓿提取物(对照)和0.02%丁基化羟基甲苯(BHT)。理化性质如脂肪酸组成(FAC),过氧化物值(PV),茴香胺值(AV),毒物值(TV),总极性含量(TPC),C18:2 / C16:0比和煎炸油的粘度分别为在连续五天的油炸过程中确定。结果表明,与对照相比,N。sativa L.提取物在煎炸过程中能够提高两种煎炸油的氧化稳定性。抗氧化剂的稳定作用为BHT> NE。基于亚油酸(C18:2)与棕榈酸(C16:0)的比例和脂肪酸组成,发现RBD棕榈油精比向日葵油更稳定。

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