天津“小站稻”储藏过程中的品质变化  

Quality Changes of Tianjin'Xiaozhan rice'during Storage

作　　者：刘晗 刘诗佳 刘金光 戈立新 张新阁 石磊 刘元[3] 王玥玮[3] 梁辰 周中凯[1] LIU Han;LIU Shijia;LIU Jinguang;GE Lixin;ZHANG Xinge;SHI Lei;LIU Yuan;WANG Yuewei;LIANG Chen;ZHOU Zhongkai(College of Food Science and Technology,Tianjin University of Science&Technology,Tianjin 300457,China;Tianjin Lida Grain and Oil Storage and Transportation Co.,Ltd.,Tianjin 300110,China;Tianjin Food Research Institute Co.,Ltd.,Tianjin 301699,China)

机构地区：[1]天津科技大学食品科学与工程学院,天津300457 [2]天津利达粮油储运有限公司,天津300110 [3]天津市食品研究所有限公司,天津301699

出　　处：《食品研究与开发》2024年第2期28-34,共7页Food Research and Development

基　　金：“十三五”国家重点研发计划项目(2016YFD0400104-4)。

摘　　要：为探究储藏过程中大米品质变化的特征规律,以天津特产小站稻为试验对象,37℃储藏180 d,研究大米储藏过程中的糊化特性、流变学特性、蒸煮特性及质构特性等理化特性的变化规律。研究发现:随着储藏时间的延长,大米中蛋白质的含量先升高后降低,但大米胶稠度逐渐降低,储藏180 d后,大米呈现出更高的峰值黏度和谷值黏度;流变学特性显示大米形成的凝胶网络结构呈现弹性增强、黏性减弱的变化规律;蒸煮特性显示米饭吸水率和体积膨胀率逐渐增大,而米汤pH值逐渐减小,米饭综合评分逐渐降低;质构特性显示米饭硬度逐渐增大,但黏着性整体减小。In order to explore the characteristics of rice quality changes during storage,Tianjin specialty Xiaozhan rice was taken as the test object and stored at 37℃for 180 d.The changes of physicochemical properties such as gelatinization,rheology,cooking and texture characteristics of rice during storage were studied.The results revealed that with the extension of storage time,the protein content in rice gradually increased,but the viscosity of rice paste gradually decreased.After 180 d of storage,the rice showed higher peak viscosity and valley viscosity.Rheological properties showed that the gel network structure formed by rice exhibited a pattern of increased elasticity and decreased viscosity.Cooking properties revealed that the water absorption and volume expansion rate of rice increased gradually,while the pH value of rice soup decreased gradually,and the comprehensive score value of rice decreased gradually.Texture characteristics showed that the hardness of rice increased gradually,but the adhesiveness decreased gradually.This study provides scientific data and a theoretical basis for understanding the quality change of Tianjin Xiaozhan rice during storage.

关 键 词：天津“小站稻” 储藏 糊化特性 流变学特性 蒸煮特性 

分 类 号：TS210.1[轻工技术与工程—粮食、油脂及植物蛋白工程]