Objective:Study on broken characteristics of brown rice in rice milling chamber.Methods:The mechanical tests of brown rice were carried out by universal material testing machine, and the breaking cracks were observed by digital microscope.Results:Brown rice will undergo the alternating process of yield stage and strengthening stage until fracture. Under the action of extrusion load, cracks were generated at the internal microvoids, and the rapid propagation of cracks caused the breakage or fracture of rice grains. Under three-point bending and shear loads, cracks were generated from the bottom of the support end and extended to the front. The compressive deformation resistance of brown rice was the largest, followed by the three-point bending deformation resistance, and the shear deformation resistance were the smallest. Compared with extrusion load, the breaking strength and breaking energy of brown rice under three-point bending and shear load were smaller.Conclusion:When designing the structure of rice mill, the influence of bending and shearing on brown rice should be minimized. Mechanical properties of japonica brown rice are better than indica brown rice under the same conditions.

Publication Date


First Page


Last Page





[1] 朱西慧.大米加工企业过度加工行为及其影响因素:以江苏为例[J].粮食科技与经济,2018,43(2):105-107,118.ZHU Xi-hui.Overprocessing behavior of rice processing enterprises and its influencing factors:Taking Jiangsu as an example[J].Grain Science,Technology and Economy,2018,43(2):105-107,118.
[2] 樊琦,刘梦芸,祁华清.我国稻谷加工粮食损失与治理对策研究[J].粮油食品科技,2015,23(5):117-120.FAN Qi,LIU Meng-yun,QI Hua-qing.Research on grain loss and control countermeasures of rice processing in China[J].Grain and Oil Food Science and Technology,2015,23(5):117-120.
[3] 张双.碾米机中物料流流体动力学分析[D].郑州:河南工业大学,2017:65.ZHANG Shuang.Fluid dynamics analysis of material flow in rice mill[D].Zhengzhou:Henan University of Technology,2017:65.
[4] 韩燕龙.碾米机内米粒运动特征及碾白特性[D].哈尔滨:东北农业大学,2017:88.HAN Yan-long.The characteristics of grain movement and milling in rice mill[D].Harbin:Northeast Agricultural University,2017:88.
[5] 曾勇.横式碾米机内米粒碾白机理及破碎特性[D].哈尔滨:东北农业大学,2019:14-18.ZENG Yong.Whitening mechanism and crushing characteristics of rice grains in horizontal mill[D].Harbin:Northeast Agricultural University,2019:14-18.
[6] 吴杰.基于显微图像处理的稻谷破损方式研究[D].武汉:华中农业大学,2014:26-36.WU Jie.Study on rice damage based on microscopic image processing[D].Wuhan:Huazhong Agricultural University,2014:26-36.
[7] 程绪铎,高梦瑶,杜小翠,等.稻谷籽粒的压缩特性与含水率关系的实验研究[J].粮食储藏,2015,44(1):6-10.CHENG Xu-duo,GAO Meng-yao,DU Xiao-cui,et al.Experimental Study on relationship between compression characteristics and moisture content of rice grain[J].Grain Storage,2015,44(1):6-10.
[8] 周显青,张玉荣,褚洪强,等.糙米机械破碎力学特性试验与分析[J].农业工程学报,2012,28(18):255-262.ZHOU Xian-qing,ZHANG Yu-rong,CHU Hong-qiang,et al.Brown rice mechanical crushing mechanical properties test and analysis[J].Agricultural Engineering Journal,2012,28(18):255-262.
[9] 周显青,孙晶,张玉荣,等.糙米力学特性与加工品质的相关性研究[J].粮食与饲料工业,2015(6):1-6.ZHOU Xian-qing,SUN Jing,ZHANG Yu-rong,et al.Correlation between mechanical properties of brown rice and processing quality[J].Food and Feed Industry,2015(6):1-6.
[10] 李毅念,丁为民.稻谷腹部、背部微观结构差异性分析[J].中国农业科学,2010,43(16):3 473-3 480.LI Yi-nian,DING Wei-min.Microstructure difference analysis of rice abdomen and back[J].Chinese Agricultural Science,2010,43(16):3 473-3 480.
[11] 贾富国,史宇菲,韩燕龙,等.非浸泡复合酶法预处理改善糙米碾米性能[J].农业工程学报,2015,31(16):264-271.JIA Fu-guo,SHI Yu-fei,HAN Yan-long,et al.Non-soaking combined enzymatic pretreatment improved the milling performance of brown rice[J].Journal of Agricultural Engineering,2015,31(16):264-271.
[12] 吴中华,王珊珊,董晓林,等.不同温度及含水率稻米籽粒加工过程破裂载荷分析[J].农业工程学报,2019,35(2):278-283.WU Zhong-hua,WANG Shan-shan,DONG Xiao-lin,et al.Fracture load analysis of rice grain processing under different temperature and moisture content[J].Journal of Agricultural Engineering,2019,35(2):278-283.
[13] 白士刚,赵宏伟,贾富国.糙米吸湿裂纹的断裂力学机制[J].食品工业,2020,41(9):273-275.BAI Shi-gang,ZHAO Hong-wei,JIA Fu-guo.Fracture mechanics mechanism of moisture absorption crack in brown rice[J].Food Industry,2020,41(9):273-275.
[14] 贾富国,邓华玲,郑先哲,等.糙米加湿调质对其碾米性能影响的试验研究[J].农业工程学报,2006(5):180-183.JIA Fu-guo,DENG Hua-ling,ZHENG Xian-zhe,et al.Experimental study on the effect of moisture conditioning of brown rice on its milling performance[J].Journal of Agricultural Engineering,2006(5):180-183.
[15] 白士刚,贾富国.糙米加湿调质参数对整精米率影响的研究[J].中国粮油学报,2008(3):1-3.BAI Shi-gang,JIA Fu-guo.The effect of moisture conditioning parameters of brown rice on head milled rice rate[J].Chinese Journal of Grain and Oil,2008(3):1-3.
[16] 利生.中华人民共和国国家标准稻谷(GB 1350—2009)[J].农村实用技术,2013(3):51.LI Sheng.National standard rice of the peopleʼs republic of China(GB 1350—2009)[J].Rural Practical Technology,2013(3):51.
[17] 吴婧,汤晓华,杨泗苹,等.基于激光点云数据的糙米表面三维模型重建[J].食品与机械,2019,35(12):19-22,28.WU Jing,TANG Xiao-hua,YANG Si-ping,et al.3D model reconstruction of brown rice surface based on laser point cloud data[J].Food & Machinery,2019,35(12):19-22,28.

Included in

Food Science Commons



To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.