单 位：
湖北省农业科学院农产品加工与核农技术研究所
关键词：
枸杞干;辐射灭菌;感观品质;微生物;D_(10);理化性质;工艺剂量
摘 要：
[目的]研究枸杞干的辐射灭菌工艺剂量。[方法]采用不同剂量~(60)Co-γ射线辐照枸杞干,研究不同剂量对枸杞干感观品质、微生物生存率以及蛋白质等主要成分含量的影响。[结果]当辐照剂量为3.98 kGy时,枸杞干中细菌总数降至4.30×10~2CFU/g,霉菌数小于10 CFU/g,大肠菌群未检出,符合企业枸杞干卫生标准;计算得到枸杞干中细菌D_(10)为1.61 kGy。当辐照剂量低于8.11 kGy时,枸杞干的比重、色泽、气味、滋味和口感以及可接受性与对照(未辐照)相比无明显变化。辐照对枸杞干的蛋白质、脂肪、水分含量无明显影响,对VE含量有影响。在枸杞干批量辐照时,产品箱中最低剂量点剂量不得低于4 kGy,经剂量跟踪,枸杞干吸收剂量为4.02~5.96 kGy,不均匀度为1.48,微生物含量符合要求。因此,枸杞干辐照灭菌的工艺剂量为4~8 kGy。[结论]该研究为枸杞干的辐照灭菌应用提供了工艺参数。
译 名：
Study on Radiosterilization Processing of Dried Lycium barbarum L.
作 者：
QIU Jian-hui;CHEN Yu-xia;GU Feng;Institute for Farm Products Processing and Nuclear-agricultural Technology ,Hubei Academy of Agricultural Sciences;
关键词：
Dried Lycium barbarum;;Radiation sterilization;;Sensory quality;;Microorganism;;D_(10);;Physicochemical property;;Technology dose
摘 要：
[Objective]To study the technology dose of radiation sterilization of dried Lycium barbarum.[Method]Using different doses of~(60)Co-γray to radiated the L. barbarum,studied the effects of different doses on the sensory quality,the survival rate of the microorganism and the contents of main components such as wolfberry protein,etc.[Result]When the irradiation dose was 3.98 kGy,the total number of bacteria falled to4.30×10~2 CFU/g,mould content was less than 10 CFU/g and coli group were not detected in dried L. barbarum,it had been in line with the enterprise dried L. barbarum hygiene standards; the bacterial D_(10) value of the dried L. barbarum was calculated as 1.61 kGy. When the irradiation dose was lower than 8.11 kGy,the proportion,color,smell,taste,taste and acceptability of dried L. barbarum had no obvious change compared with the control( unirradiated). Irradiation had no obvious effect on the content of the protein,fat and water of L. barbarum,but had an effect on the content of VE.When the dried L. barbarum mass were irradiated at the lowest dose point dose in product box shold not be less than 4 kGy.Dose tracking,the absorbed dose was 4.02 ~ 5.96 kGy,the uneven degree was 1.48.The content of the microorganism had been in line with the enterprise of hygiene standards.So the process dose of radiosterilization of wolfberry dry was 4-8 kGy.[Conclusion]The study provided technological parameters for the application of radiation sterilization of dried L.barbarum.
