以葛根粉酶解物为壁材的粉末油脂理化性质及稳定性研究  

Physicochemical properties and stability of oil powder with pueraria hydrolysates as wall material

作　　者：钟红兰[1] 窦晓凤[1] 熊华[1] 白春清[1] 彭海龙[1] 赵强[1] 史卿[1] 

机构地区：[1]南昌大学食品科学与技术国家重点实验室,南昌330047

出　　处：《中国油脂》2013年第6期35-39,共5页China Oils and Fats

基　　金：科技部国家重点实验室自由探索资助项目(SKLF-TS-201116)

摘　　要：对以葛根粉酶解物为壁材的粉末油脂进行了感官评价和理化性质测定。结果表明:产品粉体洁白,有葛根粉的清香,颗粒细,流动性较好;产品水分为2.72%,包埋率达89.42%,溶解度为95.60%;复水乳液平均粒径为239.3 nm。扫描电镜结果显示,产品颗粒为表面光滑、内部空心的完整球形,其囊壁致密且有一定厚度,无裂纹和孔隙。差示扫描量热及热重分析结果表明,产品热熔解温度高,常温下处于稳定的玻璃态,具有良好的热稳定性。Schaal加速氧化试验结果表明,产品的氧化稳定性较好,在室温下的货架寿命可达16个月。Sensory evaluation and physicoehemical properties of oil powder using pueraria hydrolysates as wall material were investigated. The results showed that the product was pure white with pueraria flavor, fine particles and good fluidity; water content was 2. 72%, embedding rate was 89. 42% and solubility was 95.60% ; the mean particle diameter of reconstituted emulsion was 239. 3 nm. Scanning electron micro- scope images displayed that its particles had hollow spherical shape with smooth surface, dense wall and no cracks or pores. Differential scanning calorimetry and thermogravimetric analysis indicated that the thermal melting temperature of the oil powder was high, and it was in stable glassy state at room temperature, thus the product had good thermal stability. In addition, Schaal oven accelerated oxidation test suggested that the product had favorable oxidation stability, and its shelf life could be up to 16 months at room temperature

关 键 词：葛根粉 粉末油脂 壁材 理化性质 稳定性 

分 类 号：TS221[轻工技术与工程—粮食、油脂及植物蛋白工程]