包装对巴旦杏仁油脂氧化和抗氧化能力的影响

以经过加工的去壳巴旦杏仁为材料,研究不同包装材料对其酸价、过氧化值、TBA值、总酚含量、VE含量和DPPH自由基清除能力的影响,以期了解包装材料对巴旦杏仁贮藏过程中油脂氧化和抗氧化能力的影响.结果表明:巴旦杏仁在贮藏过程中发生油脂的氧化酸败,表现为过氧化值和酸价上升,TBA值增加；采用EVOH共挤膜包装可显著降低其贮藏过程中酸价和过氧化值的增加幅度,抑制TBA值增加,减轻脂肪的氧化酸败；并保持较高的自身抗氧化物质总酚和VE含量,减缓DPPH自由基清除能力的下降,相对较好地维持组织的抗氧化能力.

Effects of Different Packaging on Lipid Peroxidation and Antioxidant Ability of Amygdalus communis L. kernal oil during Storage

To understand effects of different packing on lipid peroxidation and antioxidant ability of Amygdalus communis L.kernal during storage at 30 ℃ with processing and shelling Amygdalus communis L.kernal,acid value,peroxide value,TBA value,total phenols,vitamin E content and DPPH scavenging activity inhibition of Amygdalus communis L.kernal oil during storage are measured.The result shows that acid value,peroxide value and TBA value decrease in Amygdalus communis L.kernal,which demonstrates that lipid oxidation occurrs.Packing of EVOH co-extrusion film packing reduces the increase in acid value,peroxide value and TBA value,keeps high level of total phenol and vitamin E contents,alleviates the decrease in DPPH scavenging activity,inhibites oil oxidation and relatively enhances antioxidant ability.