高频振动式微粉碎对兔骨粉体特性的影响

High frequency vibration micro comminution on powder characteristics of rabbit bone

为提高兔骨粉的粉碎效率、扩展其应用范围,采用高频振动对兔骨粉进行微粉碎,并与小麦粉作比较,研究兔骨微细粉的粉体特性。结果表明,振动微粉碎对兔骨粉的官能团影响不大,微粉碎改善了骨粉的色泽、膨胀力、粒径分布、颗粒的均匀性及形状,且提高了骨粉中Ca^(2+)的释放度,但微粉碎会降低骨粉的流动性、持水性,过度粉碎还会引起骨粉白度降低及颗粒团聚;振动粉碎10 min,即可制备与小麦粉色泽接近、粒径小[D 0.5=(16.92±0.15)μm]、营养价值高(低脂、高蛋白、富含钙、镁、锌)、分散及流动性好的兔骨微细粉。高频振动式微粉碎极大提高了兔骨粉的粉碎效率,制备的兔骨微细粉粉体特性优良,为兔骨粉的生产及应用提供理论基础。

In order to improve the comminution efficiency of rabbit bone meal and expand its application range,high-frequency vibration was used to pulverize rabbit bone meal,and compared with wheat flour.And the powder characteristics of rabbit bone meal were also been studied.The results showed that vibration micro pulverization had little effect on the functional groups of rabbit bone meal.Micro grinding improved the color,swelling force,particle size distribution,particle uniformity and shape of bone meal,and increased the release of calcium ions.However,micro comminution reduced the fluidity and water holding capacity of bone meal,and excessive pulverization would also cause a decrease of whiteness and agglomeration of bone meal.The results also showed that the rabbit bone micro powder with the same color as wheat flour,small particle size[D0.5=(16.92±0.15)μm],high nutritional value(low fat,high protein,rich in calcium,magnesium and zinc),good dispersion and fluidity could be obtained by vibration grinding in 10 min.High-frequency vibration micro comminution greatly improved the grinding efficiency of rabbit bone meal,and the prepared rabbit bone micro powder had excellent characteristics,which will provide a theoretical basis for the production and application of rabbit bone meal.