电子束辐照对蛋黄粉品质及微生物的影响  

Effect of electron beam on quality and microorganism of egg yolk

作　　者：颜伟强[1,2] 岳玲[1,2] 孔秋莲[1,2] 王海宏[2] 陈志军 戚文元[1,2] 

机构地区：[1]上海束能辐照技术有限公司,上海201401 [2]上海市农业科学院,上海201106

出　　处：《西北农林科技大学学报（自然科学版）》2016年第1期211-216,共6页Journal of Northwest A&F University(Natural Science Edition)

基　　金：国家高技术研究发展计划(863计划)项目(2011AA100804);上海市科委国际合作项目(12390700700)

摘　　要：【目的】研究电子束辐照对蛋黄粉品质和微生物生长的影响，为蛋黄粉杀菌方法的确定提供参考。【方法】以蛋黄粉为原料，分别用0，1，2，3，4，6和8 kGy电子束进行辐照处理，比较不同剂量电子束辐照对蛋黄粉乳化性能、脂质氧化性能、色泽的影响，并分析辐照后贮藏30 d蛋黄粉中微生物的变化，综合不同辐照剂量对蛋黄粉品质及微生物变化的影响，确定蛋黄粉电子束辐照处理的适宜加工工艺。【结果】蛋黄粉在辐照剂量为1～4 kGy时，其乳化能力、乳化稳定性及脂质过氧化值分别为392.4～351.4 mL/g，27.8～24.7 min和1.80～1.98 mmol/kg，与CK组（0 kGy）乳化能力（40.6 mL/g）、乳化稳定性（28.3 min）和脂质过氧化值（1.80 mmol/kg）相比无显著差异（P＞0.05）；辐照剂量为6 kGy时，其酸价（0.14 mg/g）和色泽L＊与CK组比较无显著变化；3～4 kGy的辐照剂量可以有效控制蛋黄粉中微生物的变化，并可有效防止产品贮藏过程中微生物的生长与繁殖。【结论】电子束辐照剂量控制在4 kGy内，对蛋黄粉理化及感官品质影响不大，并能有效杀灭产品中的微生物，4 kGy是蛋黄粉适宜的电子束辐照剂量。[Objective] The objective was to ty and microorganism of egg yolk,which would ment on egg yolk. [Method] Egg yolk was irrad fore being stored for 30 d. The effect of irradiate investigate the effect of electron beam provide information for d iated by electron accelera etermlnatlon irradiation on quali of sterilization treat tor at 0,1,2,3,4,6 and 8 kGybe d dose on quality of egg yo sifying capacity, fat oxidation and color, and microorganism change of egg y storage. The optimal irradiation dose was obtained according to quality a lk was studied in terms of emul- olk was tested during the 30 day nd microorganism of egg yolk. [Result] When egg yolk was irradiated at the doses of 1--4 kGy,the emulsifying capacity,emulsion stabili- ty,and peroxide values were 392.4--351.4 mL/g,27.8--24.7 min and 1.80--1.98 mmol/kg,respectively, without significant differences compared to control group （CK） values of 40.6 mL/g,28.3 min and 1.80 mmol/kg （P〈0.05）. When the dose was 6 kGy,acid value （0.14 mg/g） and L value were not significantsince the effect on physical and chemical properties of egg yolk was negligible and the control of microor- ganisms was efficient.

关 键 词：电子束 辐照剂量 蛋黄粉 杀菌技术 

分 类 号：TS253.4[轻工技术与工程—农产品加工及贮藏工程]