月见草油-β-环糊精包络物的稳定性研究  

Study on the Stability of β-Cyclodextrin Inclusion Complex of Oneothera Biennis Oil

作　　者：欧阳玉祝[1] 李志平[1] 麻成金[1] 李辉[1] 刘贤刚[1] 

机构地区：[1]吉首大学化学化工学院,湖南吉首416000

出　　处：《食品科学》2005年第9期39-42,共4页Food Science

基　　金：湖南省自然科学基金资助课题(03JJY6006)

摘　　要：用β-环糊精对月见草油进行包络,对包络物作了红外光谱、紫外光谱和差热分析。考察了包络物对重金属离子种类和浓度以及不同温度作用的稳定性。结果表明:随温度的升高和金属离子浓度的增大,油和包络物的吸光度都增加。在120℃温度下反应2.5h,月见草油的ΔA/A0值增加1.69倍,包络物的ΔA/A0值增加1.2倍。0.08mol/LPb2+作用下反应8h,油的ΔA/A0值增加2.29倍,包络物的ΔA/A0值增加0.49倍,由此说明包络物对温度和金属离子作用的稳定性大大提高。The structure of the inclusion complex of Oneothera Biennis oil by β-cyclodextrin was characterized with IR, UVVis and differential thermal analysis technique.The influence of the type, concentration of the heavy metal cation and the temperature on the stability of β-cyclodextrin inclusion complex was investigated. The results showed that the absorbance of Oneothera Biennis oil and its inclusion complex by β-cyclodextrin increased with the concentration of metal cation and the temperature. When the reaction was carried out for 2.5h at 120℃, △A/Ao for the two substrates increased to 1.69 and 1.2 times of the original values, respectively. When reacted for 8h at 0.08mol/L Pb^2＋, △A/Ao for the two substrates became 2.29 and 0.49 times of the original values, respectively, indicating a greatly increased stability of the inclusion complex to the variation of the metal cation concentration and the temperature relative to the Oneothera Biennis oil.

关 键 词：月见草油 月见草油-β-环糊精包络物 稳定性 

分 类 号：TS225.19[轻工技术与工程—粮食、油脂及植物蛋白工程]