摘要
以"郑单958"品种玉米为对象,模拟中国蒙新、华北、华中和华南储粮微环境条件(15℃,50%RH;20℃,65%RH;28℃,75%RH和35℃,85%RH),以研究储藏期间玉米蛋白质的变化规律,结果表明储藏时间对玉米的总蛋白含量几乎无影响(p>0.05);随着储藏时间延长,玉米中清蛋白、球蛋白、醇溶蛋白和巯基含量呈下降趋势(p<0.05),而谷蛋白和二硫键含量则呈现上升趋势;储藏微环境对蛋白组分以及巯基和二硫键含量的变化影响显著(p<0.05)。与低温低湿条件(15℃,50%RH)相比,高温高湿条件(35℃,85%RH)下,玉米中清蛋白、球蛋白、醇溶蛋白和巯基含量分别减少了0.24、0.13、0.26 g/100 g和1.19μmol/g,谷蛋白和二硫键含量分别增加了0.74 g/100 g和2.05μmol/g。因此,低温低湿环境(15℃,50%RH)更利于玉米安全储藏。
Zhengdan 958 maize was chosen as the research object in this paper and it was stored under four different microenvironments,which were simulated to Meng-Xin,north China,central China and south China（ 15 ℃ ,50% RH;20 ℃ , 65% RH;28 qC ,75% RH;35 ℃ ,85% RH） ,to explore the variation law of maize protein during storage.Results showed that there was no significant influence of storage time on total protein content in each treatment group （p 〉 0.05 ） ; the contents of albumin, globulin, gliadin and sulfhydryl all presented descending tendencies, while the contents of gluten and disulfide bond showed rising tendencies （p 〈 0.05 ）.The contents of protein components, sulfydryl and disulfide bond were changed significantly （p 〈0.05 ）under different storage microenvironments.Compared with the conditions of high temperature and humidity（ 35 ℃, 85% RH）and low temperature and humidity（ 15 ℃ ,50% RH）, the contents of albumin, globulin, gliadin and sulfhydryl were reduced by 0.24,0.13,0.26 g/100 g and 1.19 μmol/g, while the contents of gluten and disulfide bond were increased by 0.74 g/100 g and 2.05μmol/g.In summary,temperature and humidity can be used as a reference index for the quality change of maize,and low temperature and humidity environment（ 15 ℃ ,50% RH）was more conducive to the safe storage of maize.
作者
殷晶晶
赵妍
田晓花
YIN Jing-jing ZHAO Yan TIAN Xiao- hua(College of Food Science and Technology, Henan University of Technology, Zhengzhou,450001, China Shandong Business Institute, Yantai, 264670, China)
出处
《食品工业科技》
CAS
CSCD
北大核心
2017年第3期331-335,共5页
Science and Technology of Food Industry
基金
国家自然科学基金项目(31401546)
河南省科技攻关计划项目(162102110063)
关键词
玉米
储藏微环境
蛋白质组分
巯基
二硫键
maize
storage microenvironment
protein component
sulfydryl
disulfide bond
