微孔淀粉颗粒结构及其吸附性能的研究  

Granules Structure of Porous Starch and its Adsorption Property

作　　者：李永平 于丽薇[2] 黄雨洋 

机构地区：[1]黑龙江粮食职业学院粮油工程系,黑龙江哈尔滨150080 [2]哈尔滨学院,黑龙江哈尔滨150086

出　　处：《现代食品科技》2010年第4期383-386,391,共5页Modern Food Science and Technology

摘　　要：本文利用扫描电镜(SEM)对自制微孔淀粉的结构进行观察,从观察结果中我们发现微孔淀粉颗粒表面均匀布满孔洞,并且在淀粉颗粒中心形成一个较大的空腔,该空腔可以包埋目标吸附物质,并起到保护和缓释作用。为此,本文选用了胭脂红色素和VC作为目标吸附物质,研究确定了微孔淀粉吸附胭脂红色素的最优吸附时间为140min、最优吸附温度为30℃、最优吸附浓度为8×10-5mol/L、饱和吸附剂量为33mg/g;吸附VC的饱和吸附剂量为30mg/g,并且在对VC的保护作用研究中,发现微孔淀粉起到了很好的延缓其氧化的效果。Porous starch was self-prepared. SEM analysis showed that the surface of the porous starch granules were covered with holes evenly, and a large cavity was also found in the center of the starch granules, which can embedded target absorption materials. So carmine pigment and vitamin C were selected as target absorption materials and the optimal adsorption time porous starch adsorp carmine pigment was determined as 140min. Besides, the optimal adsorption temperature, adsorption concentration s,aturation adsorption capacity and the saturated adsorption capacity of vitamin C were 30 ℃, 8 × 10^ -5 mol / L, 33 mg / g and 30 mg / g, respectively. It was also found that porous starch played a good effect to delay oxidation of vitamin C.

关 键 词：微孔淀粉 吸附 包埋 

分 类 号：TS231[轻工技术与工程—粮食、油脂及植物蛋白工程]