食品工业科技2017，Vol.38Issue(9)：333-338,6.DOI:10.13386/j.issn1002-0306.2017.09.056
不同剂量率60Co源与电子加速器对草鱼辐照保鲜效果影响
Effects of 60Co γ-ray with different dosage rates and high energy beam on the fresh-keeping of grass carp
摘要
Abstract
The effects of irradiation dosage rate (the electron beam,high-dose-rate 60 Co γ-ray irradiation,low-dose-rate 60 Co γ-ray irradiation and the control,rating in descending order)and vacuum packaging on fresh-keeping of grass carp fillets stored at (4 ± 0.5) ℃ were evaluated basing on physicochemical indexes including Total volatile base nitrogen (TVB-N),pH and K value,microbiological indicator (Total viable counts (TVC))and sensory evaluation.The results showed that the pH increased at first,then decreased with the storage time.The growth trend of TVB-N and TVC were slowed down as the increase of the irradiation dosage rate.The samples irradiated by electron beam exceeded the TVB-N (20 mg/100 g)and TVC limits (5 log10CFU/g)in 27 d and 21 d,respectively,and the sensory evaluation value was 3.01 in 9 d.However,electron beam irradiation had little inhibiting effect on the increase of K value.The grass carp fillets irradiated by high-dose-rate 60Co γ-ray reached the limits of TVB-N and TVC in 21 d and 20 d,respectively,and the sensory evaluation value was 3.51 in 9 d.The K value could be well repressed by the irradiation of 60Co γ-ray.The study showed that high-dose-rate 60Co γ-ray irradiation was the best choice for fresh-keeping of grass carp fillets after comprehensive evaluation.关键词
草鱼/辐照/保鲜/60Co-γ射线/电子加速器Key words
grass carp/irradiation/fresh-keeping/60Co γ-ray/electron accelerator分类
轻工纺织引用本文复制引用
白婵,廖涛,耿胜荣,徐晨,张小燕,熊光权,鉏晓艳,饶丹华,李新,李海蓝..不同剂量率60Co源与电子加速器对草鱼辐照保鲜效果影响[J].食品工业科技,2017,38(9):333-338,6.基金项目
湖北省重大科技创新计划项目(2015ABA038) （2015ABA038）
湖北省农业科技创新中心项目(2016-620-000-001-036)资助. （2016-620-000-001-036）
