等离子体处理对含抗氧化剂植物油氧化稳定性的影响。
Effects of plasma treatment on the oxidative stability of vegetable oil containing antioxidants.
机构信息
Department of Food Science and Biotechnology and Food Flavour Sensory Research Center, Sungkyunkwan University, Suwon, Republic of Korea.
Department of Food Science and Biotechnology, Gachon University, Seongnam 13120, Republic of Korea.
出版信息
Food Chem. 2020 Jan 1;302:125306. doi: 10.1016/j.foodchem.2019.125306. Epub 2019 Aug 2.
Plasma, the fourth stage of matter, is a partially or wholly ionized state of gas. Degree of lipid oxidation and effects of antioxidants were evaluated in bulk oils at plasma treatment. Significant changes in the conjugated dienoic acid were induced after 10 min of plasma treatment, which corresponded to treatment for 2.5 h at 100 °C and 48 h at 60 °C. Tocopherol stability in the stripped corn oil was significantly higher than that in medium-chain triacylglycerol after the plasma treatment. The antioxidant capacities of 10 μM of α-tocopherol and sesamol were higher than that of β-carotene, and synergistic effects among α-tocopherol, sesamol, and β-carotene were not observed. Added α-tocopherol and sesamol decreased CDA formation by 33 and 30% compared to control samples after plasma treatment. Moisture content in oils decreased significantly about 20% moisture after 6 min plasma treatment. Lipid oxidation could be an important issue in plasma-treated lipid-rich products.
等离子体是物质的第四态，是气体的部分或完全电离状态。在等离子体处理时，评估了大量油中的脂质氧化程度和抗氧化剂的效果。在等离子体处理 10 分钟后，共轭二烯酸发生了显著变化，这相当于在 100°C 下处理 2.5 小时和在 60°C 下处理 48 小时。在等离子体处理后，玉米油中生育酚的稳定性明显高于中链三酰甘油。10 μM α-生育酚和芝麻酚的抗氧化能力高于β-胡萝卜素，并且α-生育酚、芝麻酚和β-胡萝卜素之间没有观察到协同作用。与对照样品相比，添加α-生育酚和芝麻酚可使等离子体处理后的 CDA 形成减少 33%和 30%。经过 6 分钟的等离子体处理后，油中的水分含量显著下降了约 20%。脂质氧化可能是富含脂质的等离子体处理产品中的一个重要问题。
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