食品科学 ›› 2008, Vol. 29 ›› Issue (9): 315-317.

• 工艺技术 • 上一篇    下一篇

研磨加工大豆粕粒径及集聚状态观察

 吴志华, 林巧慧, 毛慧玲, 杨安树, 陈红兵   

  1. 南昌大学食品科学与技术国家重点实验室; 南昌大学中德联合研究院; 南昌大学生命学院;
  • 出版日期:2008-09-15 发布日期:2011-12-08

Particle Size and Aggregation of Powder of Milled Soybean Meal

 WU  Zhi-Hua, LIN  Qiao-Hui, MAO  Hui-Ling, YANG  An-Shu, CHEN  Hong-Bing   

  1. 1.State Key Laboratory on Food Science and Technology,Nanchang University,Nanchang 330047,China; 2.Jangxi-OAI Joint Research Institute,Nanchang University,Nanchang 330047,China; 3. School of Life Science,Nanchang University,Nanchang 330031,China
  • Online:2008-09-15 Published:2011-12-08

摘要: 为提高豆粕的利用率,本实验通过球磨研磨制备不同粒径豆粕粉体,研究其粒径及其聚集特性。超微粉碎机粉碎后的豆粕,经球磨机研磨不同时间(6、7、8、9、10h)后,对大豆粕微粉体粒径及聚集特性影响。采用激光粒度分析仪测定不同研磨时间的大豆粕微粉体的粒度分布,利用光学显微镜观察其聚集特性。实验结果显示,豆粕粉体研磨68h粒径分布峰值均在530nm左右,有一个停滞期。球磨研磨10h后,豆粕微粉体的最小粒径峰值接近100nm。研磨后的大豆粕微粉体会出现聚集现象,大豆粕微粉体聚集颗粒直径多在3μm以下。不同粒径大豆粕微粉体聚集情况的差异不显著,但当粒径达到或者小于100nm,集聚性质变化较为明显。

关键词: 豆粕, 球磨, 集聚, 粒径

Abstract: To broaden its utilization, the defatted soybean meal was milled by balll mill. The particle size distribution and aggregation of soybean powder after different times (lasting 6, 7, 8, 9,10 h) milling were analyzed. Then the particle sizes of the powder were measured by photon correlation spectroscopy (PCS), and their aggregation was observed by microscopy. The results showed that milling from 6h to 8h, little difference was found in the size distributions of soybean powder,and all their peak lie on about 530 nm. After 10 h milling, the minimal particle size of soybean powder reaches around 100 nm. Most aggregation particles of soybean powder are below 3 μm, and the aggregations of soybean powder with different sizes seem quite similar. The aggregation property of the powder changes obviously, when the particle size of soybean powder decreases to about 100 nm.

Key words: defatted soybean meal, ball mill, aggregation, particle size