超标稻米打磨降镉技术及工艺参数优化研究  

Process Optimization of Cadmium Removal in Rice with Milling Technology

作　　者：庞敏[1,2] 郭晋琦[2] 陶湘林 吴跃辉[2,3] 魏颖娟[2,3] 唐汉军 Pang Min;Guo Jinqi;Tao Xianglin;Wu Yuehui;Wei Yingjuan;Tang Hanjun(Longping Branch Graduate School, Hunan University1 , Changsha 410125;Research Team of Crop Starch Chemistry and Metabonomics,Hunan Academy of Agricultural Sciences,Changsha 410125;Hunan Agricultural Product Processing Institute ,Academy of Agricultural Science, Changsha 410125)

机构地区：[1]湖南大学隆平分院,长沙410125 [2]湖南省农业科学院作物淀粉化学与代谢组学创新团队,长沙410125 [3]湖南省农业科学院农产品加工研究所,长沙410125

出　　处：《中国粮油学报》2018年第6期100-105,共6页Journal of the Chinese Cereals and Oils Association

基　　金：长株潭污染耕地治理国家试点项目(农业部、财政部、农加财函[2016]6号)

摘　　要：针对湖南地区镉含量0.1~0.6 mg/kg区间的9个籼稻品种稻米,采用现有的精米机械进行打磨降镉实验。结果显示,打磨度在19%以下时,降镉效率高,对整米率的影响较小,现有精米机械打磨是镉超标糙米的有效降镉技术途径;单位米粒流量、单次打磨度、单位减重效率等最佳工艺参数组合,短粒型分别为11.6 kg/min/L、3.3和363.0 g/min/L,长粒型的分别为11.0 kg/min/L、2.3和226.4 g/min/L。但是,要将所有稻米品种的镉含量从0.6 mg/kg降至0.2 mg/kg水平以下,现有精米机械存在一定的局限性。In this paper,polished rice was used to reduce cadmium by using the existing rice milling machine.Nine indica rice varieties were used in the range of 0. 1 ~ 0. 6 mg/kg cadmium in Hunan Province. The results showed that when the degree of milling was less than 19%,the cadmium reduction efficiency was high,and the whole rice rate was less affected. The existing rice polisher milling cadmium was an excessive cadmium effective way to reduce cadmium. Therefore,the existing mechanical milling of polished rice was an effective way to reduce cadmium by using cadmium exceeding brown rice. The best combination of process parameters of rice grain flow rate,a single degree of grinding,unit weight loss efficiency and so on. The short-grain type was 11. 6 kg/min/L,3. 3 and 363. 0 g/min/L,and the long-grain type was 11. 0 kg/min/L,2. 3 and 226. 4 g/min/L. However,the existing rice machinery had some limitations in reducing the cadmium content of all rice varieties from 0. 6 mg/kg to less than 0. 2 mg/kg.

关 键 词：稻米 打磨降镉 打磨参数 

分 类 号：TS212[轻工技术与工程—粮食、油脂及植物蛋白工程]