作　　者： ; ; ; ; ; (李全顺）;

机构地区： 郑州轻工业学院食品与生物工程学院

出　　处： 《辐射研究与辐射工艺学报》 2009年第2期89-94,共6页

摘　　要： 利用电子束辐照技术对冷却猪肉的杀菌和保鲜效果进行了研究,为电子束辐照技术应用于肉类加工业提供应用依据。以束流能量(X1)和辐照吸收剂量(X2)为试验因子,以菌落总数(Y)为指标,通过响应面分析法(RSM)研究了电子束辐照杀菌的效果及对货架期的影响。电子束辐照对冷却猪肉杀菌效果的二次多项数学模型为:Y=3.78-0.24X1-0.13X2-0.16X1X2-0.18X12+0.15X22(R2=0.9755)。辐照吸收剂量与束流能量之间存在协同增效作用,试验因子的显著性顺序为:剂量>交互作用>束流能量。使冷却肉初始菌数下降2个对数单位的辐照参数范围为3.23～4.0kGy,2.3～3.8MeV。经电子束辐照的冷却猪肉样品在4℃条件下贮藏,货架期比对照样品延长12d左右;在7～10℃条件下保存,货架期比对照延长9d左右。研究结果表明,电子束辐照对冷却猪肉具有杀菌保鲜作用,该研究对电子束辐照技术应用于冷却猪肉的生产实践具有指导意义。 The effects of electron beam irradiation on the sterilization and preservation of chilled pork were studied. The aim of this investigation was to provide academic and technical basis for application of electron beam irradiation on meat industry. The response surface analysis was used with electron beam energy（X1） and dose（X2） as factors and colony form unit（Y） as responses. The results have been shown that the model of sterilization of chilled pork by electron beam irradiation can be expressed Y=3.78-0.24X1-0.13X2-0.16X2X2-0.18X1^2＋0.15X1^2（R^2=0.9755）. It has been found there is a interaction between electron beam energy and absorbed doses, and the significance sequence of factors is absorbed dose〉interaction〉 electron beam energy. When absorbed doses are in range from 3.23 kGy to 4.0 kGy and electron beam energy is in range from 2.3 MeV to 3.8 MeV, the colony form unit would drop 2 logarithm units. The shelf life of samples treated with electron beam irradiation is longer by about 12 d than that of control sam- pies when the samples are stored at 4 ℃. When the samples are stored at 7-10 ℃, shelf life of samples treated with electron beam irradiation is longer by about 9 d than that of control samples. The results showed that electron beam irradiation has the effects of sterilization and preservation on chilled pork. This study has been confirmed that the ap- plication of electron beam irradiation is very useful for meat industry.

关 键 词： 电子束辐照 冷却猪肉 杀菌 货架期

领　　域： [轻工技术与工程] [轻工技术与工程]