Decreasing radioactive cesium in lodged buckwheat grain after harvest

This study assessed soil contamination with high radioactive cesium (R–Cs) concentration in buckwheat grains by lodging, and assessed the possibility of R–Cs reduction in grain through post-harvest preparation. Analysis of buckwheat grain produced in farmers’ fields and reports from farmers indicated that grain from fields that had lodging showed higher R–Cs than grain from fields with no lodging. A field experiment demonstrated that R–Cs in grain after threshing and winnowing (TW) was about six times higher in lodged plants than in nonlodged plants. In lodged plants, R–Cs in grain was decreased to about one-fourth by polishing, and was decreased to about one-seventh by ultrasonic cleaning, compared with R–Cs in grain after TW. These results demonstrate that R–Cs of buckwheat grain of lodged plants can be decreased by removing soil from the grain surface by polishing and winnowing.     

食用菌冷链物流中杂菌交叉污染风险控制措施

基于现有研究成果,提出一种食用菌冷链物流中杂菌交叉污染风险控制措施。研究乡村产地构建微型冷库,分析预冷后的食用菌储藏模式,构建由订货系统与配送系统构成的食用菌冷链信息系统,通过该系统实现食用菌冷链的产品即时配送,缩短配送时间,降低杂菌交叉污染风险。集成无线传输、电子地图、温度检测、GPS技术,形成开放式食用菌运输定位监控平台,对食用菌冷藏车资源实施定位跟踪管理;在食用菌的冷链物流中,结合使用多种保鲜技术并对该食用菌冷链物流中杂菌交叉污染风险控制措施进行分析,比较实施措施后与实施措施前猴头菇冷链物流的杂菌交叉污染几率,试验结果证明实施食用菌冷链物流中杂菌交叉污染风险控制措施能够有效控制食用菌冷链物流中杂菌交叉污染风险。