臭氧降解稻谷中不同黄曲霉毒素B_1初始含量效果研究  

Study on effects of ozone detoxification on different initial content of AFTB_1 in paddy

作　　者：丁爱凤[1] 包月红[1] 周建新[1] 黄永军[1] 吴萌萌[1] 

机构地区：[1]南京财经大学食品科学与工程学院/江苏省现代粮食流通与安全协同创新中心/江苏高校粮油质量安全控制及深加工重点实验室,江苏南京210023

出　　处：《食品工业科技》2015年第23期72-74,共3页Science and Technology of Food Industry

基　　金：国家科技支撑项目(2013BAD17B01-3);江苏高校优势学科建设工程资助项目

摘　　要：针对黄曲霉毒素B_1(AFTB_1)污染造成的食用安全性问题,研究了稻谷储藏过程中AFTB_1含量随时间和黄曲霉量的变化规律以及臭氧降解率与稻谷中AFTB_1初始含量的关系。结果表明:30℃时,16.0%水分的稻谷AFTB_1含量(X)与储藏时间(T)呈极显著的抛物线型关系,回归方程为X=3.958T2-30.523T+45.049(R2=0.945,p<0.01),与黄曲霉量(M)呈正线性关系,回归方程为X=3.031E-005M+12.311(R^2=0.955,p<0.01)。随着稻谷中AFTB_1的初始含量增加,臭氧处理后的毒素降解率呈先上升后下降,降解率最大达到88.1%,在给定条件下,可将含68.42μg/kg AFTB_1的稻谷降解到国家限量标准(10μg/kg)。For food safety problems caused by aflatoxin B, （AFTB,）pollution the paddy,the change lows of content of AFTB, with the time and amount of Aspergillus flavus and the relationship between the initial content of AFTB, and degradation rate by ozone were investigated in storage of paddy.The results showed the content of AFTB, （X） was significantly parabolic relationship with storage time （T）and positive linear relationship with counts of Aspergillus flavus （M） in 16.0% moisture content of paddy at 30℃, and the regression equations were X =3.958T2 -30.523T ＋ 45.049 （ R2 = 0.945, p 〈 0.0l ） and X = 3.031E- 005M ＋ 12.311 （ R^2= 0.955, p 〈 0.01 ）, respectively.The detoxification rates of AFTB, rose in the first stage, and then decreased with the increase of the initial content of AFTB, in paddy.The maximum degradation rate of AFTB, was 88.1% ,and the paddy with AFTB, of 68.42 μg/kg was reduced to the national limited standard（ 10 μg/kg）at given conditions.

关 键 词：臭氧 稻谷 储藏时间 黄曲霉量 黄曲霉毒素B_1 降解率 

分 类 号：TS210.1[轻工技术与工程—粮食、油脂及植物蛋白工程]