食品科学 ›› 2007, Vol. 28 ›› Issue (5): 317-319.

• 营养卫生 • 上一篇    下一篇

辐照对市售奶粉品质影响的研究

 罗莉, 李玮玮, 王枫, 罗玲   

  1. 第四军医大学预防医学系; 唐都医院肿瘤科 陕西西安710032; 陕西西安710032;
  • 出版日期:2007-05-15 发布日期:2011-12-31

Effects of Radiation on Milk Powder Quality in Markets

 LUO  Li, LI  Wei-Wei, WANG  Feng, LUO  Ling   

  1. 1.Department of Preventative Medicine,Fourth Military Medical University,Xi’an 710032,China; 2.Department of Tumor,Tangdu Hospital,Xi’an 710032,China
  • Online:2007-05-15 Published:2011-12-31

摘要: 目的:分析不同剂量辐照对奶粉营养成分的影响。方法:对市售袋装奶粉进行不同剂量的60Coγ照射,辐照剂量分别为0、5、10、15、20kGy,分析了其中主要营养成分、微生物指标和感官指标的前后变化。结果:与对照组相比,5kGy和10kGy组辐照后主要营养成分和感官性状无明显改变,微生物指标大幅度下降:而15kGy和20kGy组辐照后营养成分有显著性改变,p<0.05,微生物指标为0,感官性状无明显改变。结论:≤10kGy剂量辐照对奶粉营养素没有明显影响,微生物指标大幅度下降,从而延长了奶粉的保质期,增加了奶粉的食用安全性。

关键词: 辐照, 奶粉, 营养成分

Abstract: Aim:To analyze the effects of radiation treatment with different doses on the nutrition ingredients of milk powder. Methods:Milk powder samples was radiated by 30Coγwith 0,5,10,15 and 20kGy respectively.The main nutrition ingredients, microbiological index,and sensory characteristic were analyzed before and after radiation.Results:To contrast with control group,there is no significant difference in main nutrition ingredients and sensory characteristics after radiation of 5kGy or 10kGy, but the number of microorganism is greatly decreased.The main nutrition ingredients decrease greatly after the radiation of 15kGy or 20kGy(p<0.05),and there are no microorganism and no significant difference in sensory characteristics.Conclusion:The radiation of less than 10kGy is the best way to prolong the storage life and enhance the security of milk powder.

Key words: radiation, milk powder, nutrition ingredient