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投稿时间:2020-09-05
投稿时间:2020-09-05
中文摘要: 为分析榛子仁油的理化性质、脂溶性维生素E含量及脂肪酸的组成,以榛子仁油为材料,采用冷溶剂指示剂滴定法、自动滴定分析法、正相高效液相色谱法,测定酸价、过氧化值、脂溶性维生素含量等指标。结果表明,榛子仁油酸价1.2 mg/g,过氧化值0.04 g/100 g,碘值90.33 g/100 g,皂化值198.67 mg/g,色泽、透光性良好;α-生育酚含量32 420.16 μg/100 g,生物活性较强;维生素E含量39 392.88 μg/100 g,抗氧化能力较好;含有不饱和脂肪酸92.13%;分别在120、150、180、210℃煎炸10 min~20 min后,棕榈烯酸、棕榈酸等7类脂肪酸均未表现出明显差异,热稳定性良好。
Abstract:The physicochemical properties and fat-soluble vitamin E and fatty acid composition of hazelnutoil were analyzed.Using hazelnutoil as the material,cold solvent indicator titration,automatic titration analysis,and normal phase high performance liquid chromatography were used to determine the acid value,peroxide value,fat-soluble vitamin content and other indicators.The results revealed that the hazelnutoil had good color and light transmittance with an acid value of 1.2 mg/g,peroxide value of 0.04 g/100 g,iodine value of 90.33 g/100 g,and saponification value of 198.67 mg/g.Additionally,the hazelnutoil contained 32 420.16 μg/100 g of α -tocopherol,with strong biological activity.The vitamin E was 39 392.88 μg/100 g,with good antioxidant capacity.Furthermore,the hazelnutoil was found to contain 92.13% unsaturated fatty acids;at room temperature,respectively,it rose to 120,150,180,210 ℃ for 10 min-20 min,after 10 min-20 min of frying at 120,150,180 ℃ and 210 ℃,the seven types of fatty acids identified,including palmitoleic acid and palmitic acid,showed no significant difference,and the thermal stability was good.
文章编号:202116025 中图分类号: 文献标志码:
基金项目:山东省林业科技创新项目(LYCX05-2018-27)
作者 | 单位 |
白瑞亮,刘欣雨,路洪贵,宋传伟,赵之峰,孙锐 | 山东省经济林管理站,山东 济南 250014;齐鲁工业大学(山东省科学院)食品科学与工程学院,山东 济南 250300;3.威海市海滨林场,山东 威海 264200 |
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