首页|食用蜡基稻米油油凝胶的制备及其性能特性研究

食用蜡基稻米油油凝胶的制备及其性能特性研究

Preparation and properties of edible wax based rice oil gel

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以稻米油为油相,蜂蜡、米糠蜡、巴西棕榈蜡和小烛树蜡作为凝胶剂制备油凝胶,并对其持油率、硬度、流变特性和微观结构进行表征.结果表明:蜂蜡、米糠蜡、巴西棕榈蜡的临界添加量为4%(以凝胶剂和稻米油的总质量为基准,下同),小烛树蜡则为2%,其中蜂蜡的持油效果最佳;随着凝胶剂添加量的增加,油凝胶硬度和黏附性总体上增强.流变学分析显示,所有油凝胶呈现剪切变稀的假塑性行为,弹性模量(G')大于黏性模量(G"),表明以弹性形变为主.微观结构揭示,不同蜡凝胶剂在6%添加量下形成的油凝胶中存在α、β'和β型晶体.红外光谱分析证实了凝胶剂与稻米油间的非共价相互作用.差示扫描量热分析表明,巴西棕榈蜡油凝胶具有最高的熔化峰值温度.
Oil gels were prepared with rice oil as oil phase,and beeswax,rice bran wax,carnauba wax,and candelilla wax as gel agents,and their oil-holding capacity,hardness,rheological properties and mi-crostructure were characterized.The results showed that the critical addition amount of beeswax,rice bran wax and carnauba wax was 4%(based on the total mass of gel agent and rice oil,the same be-low),and candelilla wax was 2%,among which beeswax had the best oil holding effect.As the amount of gel agent increased,the hardness and adhesiveness of the oil gels were generally enhanced.Rheologi-cal analysis showed that all the oil gels exhibited pseudoplastic behavior of shear thinning,and the elastic modulus(G')was greater than the viscous modulus(G"),indicating that elastic deformation was domi-nant.The microstructure revealed that α,β'and β type crystals existed in the oil gels formed by differ-ent wax gels at the addition of 6%.The non-covalent interaction between the gel and rice oil was con-firmed by infrared spectroscopy.Differential scanning calorimetric analysis showed that the oil gel of car-nauba palm wax had the highest melting peak temperature.

rice oiloil gelwaxphysical propertyrheological propertymicrostructure

石林英、亓玉琛、唐忠海、郭时印、肖航、范伟

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湖南农业大学食品科学技术学院,湖南长沙 410128

湖南省菜籽油营养健康与深度开发工程技术研究中心,湖南长沙 410128

麻省大学阿莫斯特分校食品科学学院,美国马塞诸塞州01003

稻米油 油凝胶 物理特性 流变性能 微观结构

2025

粮食与油脂
上海市粮食科学研究所

粮食与油脂

北大核心
影响因子:0.622
ISSN:1008-9578
年,卷(期):2025.38(1)