纳米豆渣纤维素的理化性质和表征特性 - 食品科学.pdfVIP

※基础研究 食品科学 2012, Vol. 33, No. 09 41 刘玲玲，田云波，刘 雄 * (西南大学食品科学学院，国家食品科学与工程本科教学示范中心，重庆 400715) 以富含纤维素的豆渣为原料，探究纳米豆渣纤维素的理化性质，并通过透射电镜、X 射线衍射仪、综 合热分析仪对所制备纳米豆渣纤维素进行表征，研究其结构与性质。所制备的纳米豆渣纤维素呈微球状，颗粒尺 寸为 15～50nm ，仍属于纤维素Ⅰ型，结晶度为43.28% ，晶粒平均尺寸为5.9nm ，其膨胀力、重金属离子吸附能 力较超微粉碎豆渣纤维素大，持水力、持油力较原料低。 豆渣；盐酸；纳米豆渣纤维素；性质；表征 Physico-chemical Properties and Characterization of Nano-Crystalline Soybean Dregs Cellulose LIU Ling-ling ，TIAN Yun-bo ，LIU Xiong* (Experiment and Teaching Center of Food Science and Engineering, College of Food Science, Southwest University, Chongqing 400715, China) Abstract ：In this study, nano-crystalline cellulose was prepared from soybean dregs (rich in cellulose) and used to investigate its physicochemical properties. Moreover, its structure was characterized using transmission electron microscope, X-ray diffractometer and comprehensive thermal analyzer. The prepared nano-crystalline cellulose was microspheres with particle size between 15 nm and 50 nm and still belonged to crystalline cellulose type Ⅰ. The crystallinity and average grain size were 43.28% and 5.9 nm, respectively. The nano-crystalline soybean dregs cellulose had higher expansive force and heavy metal ion- adsorbing capacity but lower oil-holding and water-holding capacities than the superfine soybean dregs cellulose. Key words ：soybean dregs ；hydrochloric acid ；nano-crystalline cellulose ；property ；characterization 中图分类号：TS214.2 文献标识码：A 文章编号：1002-6630(2012)09-0041-06 纤维素是自然界中最丰富的天然高分子材料，其作 维素[9-10]和一些纯度较高的再生纤维素均可作为制备纳米 为膳食纤维的一部分，作为功能性食品，具有诸多的 豆渣纤维素晶体的原料，目前已有较多学者将多种纤维 生理功能，近年来成为世界各国研究的热门课题之一。 素原料制得了纳米豆渣纤维素晶体。纳米豆