摘要
为了探讨粳稻谷在储藏期间的品质变化规律,模拟中国典型储粮区域高温高湿环境,对我国主要粳稻谷产区的3种粳稻进行加速陈化储藏,测定不同储藏时间稻谷的营养组分、储藏品质、加工品质等相关指标并进行差异分析。结果表明:随着储藏时间的延长,3种粳稻样品水分含量、发芽率、粗脂肪含量、出糙率和整精米率呈逐渐下降的趋势,直链淀粉含量则随着时间延长有所增加,还原糖含量、丙二醛含量和过氧化物酶活性呈先上升后下降的趋势,粗蛋白含量没有明显规律性变化。其中,江苏、吉林和原阳的样品发芽率分别在储藏第22周、18周和22周时降为0,还原糖含量分别在储藏16、18和20周时达到最高,丙二醛含量在储藏20周时达到峰值;发芽率、直链淀粉、粗脂肪、脂肪酸值、还原糖和丙二醛含量以及过氧化物酶活性、整精米率在大多数储藏时期内的数值间差异都达到显著水平,表明这些指标可较好地反映不同储藏时期粳稻品质劣变的差异程度,可作为稻谷陈化的敏感指标。
In order to investigate the quality change of Japonica Rice during storage,the high temperature and high humidity environment of typical grain storage areas in China was simulated.Accelerated ageing of3kinds of Japonica rice from main japonica rice producing areas in China was conducted in the present study.The nutritional components,storage quality and processing quality of rice at different storage time were measured and analyzed.The results showed that the moisture content,germination rate,crude fat content,husked rice rate and head rice rate of3rice samples decreased but the amylose content increased with the extension of storage time.The reducing sugar and MDA contents and the peroxidase activity increased firstly and then decreased,while the crude protein content had no obvious regularity change.The germination rates of Japonica Rice from Jiangsu,Jilin and Yuanyang decreased to0after storage for22,18and22weeks,respectively;the reducing sugar contents reached to the highest after storage for16,18and20weeks,while MDA content for20weeks.The numerical differences of the germination rate,amylose,crude fat,acid value,reducing sugar and MDA content,the peroxidase activity and head rice rate reached to a significant level during the most storage time.It was concluded that these indicators could better reflect the variance degree of rice quality deterioration at the different storage period,which could be taken as sensitive indexes for rice ageing.
作者
张玉荣
周显青
刘敬婉
ZHANG Yurong;ZHOU Xianqing;LIU Jingwan(College of Food Science and Technology, Henan University of Technology, Zhengzhou 450001 ,China;Henan Collaborative Innovation Center of Grain Storage and Security Zhengzhou 450001 ,China;Collaborative Innovation Center of Henan Grain Crops Zhengzhou 450001 ,China)
出处
《河南工业大学学报（自然科学版）》
CAS
北大核心
2017年第5期37-44,共8页
Journal of Henan University of Technology：Natural Science Edition
关键词
粳稻
加速陈化
营养组分
储藏品质
加工品质
Japonica Rice
accelerated ageing
nutritional components
storage quality
processing quality
作者简介
张玉荣（1967—），女，新疆阜康人，教授，硕导，主要从事农产品储藏与品质分析。;通信作者
