电子束辐照灭菌对豆粕营养品质的影响  

Effect of Electron Beam Irradiation on the Nutrition Quality of Soybean Meal

作　　者：李湘[1] 陈云堂[1] 范家霖[1] 吕晓华[1] 张建伟[1] 杨保安[1] 

机构地区：[1]河南省科学院同位素研究所有限责任公司/河南省科学院核农学重点实验室,郑州450015

出　　处：《湖北农业科学》2012年第18期4082-4085,4089,共5页Hubei Agricultural Sciences

基　　金：农业部公益性行业(农业)科研专项经费项目(201103007);河南省创新型科技人才队伍建设工程项目[豫科人事(2009)2号];郑州市创新型科技人才队伍建设工程项目(096SYJH28087);河南省重点攻关计划项目(112102110043)

摘　　要：采用不同剂量(0、0.83、1.56、2.30、4.93、7.84 kGy)的电子束辐照饲用豆粕样品,研究其对饲用豆粕营养品质的影响。结果显示,辐照剂量为0.83kGy以上时豆粕样品中霉菌总数小于10CFU/g,辐照剂量为2.30kGy时豆粕样品中细菌总数下降至100CFU/g;不同剂量的电子束辐照对豆粕的蛋白质含量、氨基酸的含量与组成、蛋白质溶解度的影响不明显;电子束辐照能影响豆粕的尿素酶活性(P<0.05),且随着辐照剂量的增加尿素酶活性降低。结果表明,2.30～7.84kGy剂量的电子束辐照能有效控制豆粕中的微生物,且对豆粕营养品质的影响不显著。Samples of soybean meal were exposed to electron beam with dosage levels of 0,0.83,1.56,2.30,4.93,7.84 kGy,to evaluate the efficacy of electron beam for decontamination as well as the effect of electron beam irradiation on the nutrition quality in soybean meal.The results showed that the total fungi number were inhibited to 10 CFU/g by irradiation when the dose was above 0.83 kGy,whereas the total number of aerobic bacteria were reduced to 100 CFU/g when soybean meals were given a irradiation dose of 2.30 kGy.The protein content,amino acid composition and protein solubility of soybean meal samples were not significantly influenced by irradiation（P0.05）,but the urease activity was significantly decreased with the increasing irradiation dosage（P0.05）.It was indicated that the irradiation dose of 2.30~7.84 kGy was effective for microbial decontamination in soybean meal,and had no adverse effects on the nutritional quality of soybean meal.

关 键 词：电子束 辐照灭菌 豆粕 营养品质 

分 类 号：TS229[轻工技术与工程—粮食、油脂及植物蛋白工程]