天津小站大米中红外光谱研究  

Study on Middle Infrared Spectroscopy of Tian jin xiao zhan rice

作　　者：杜林楠 郭丽霄 夏玉凤[3] 赵宇亮 杜建会 吴梦谣 康怡然 张雅秀 贾晨硕 Du Linnan;Guo Lixiao;Xia Yufeng;Zhao Yuliang;Du Jianhui;Wu Mengyao;Kang Yiran;Zhang Yaxiu;Jia Chenshuo(College of Chemical Technologyg,Shijiazhuang University,Shijiazhuang 050035,China;HebeiZhong Yuan Construction Project Management Corporation Ltd.,Shijiazhuang 050050,China;Hebei Normal University,Shijiazhuang 050024,China;The Second Hospital of Hebei Medical University,Shijiazhuang 050000,China;Shijiazhuang science and technology Career Academy,Shijiazhuang 052165,China)

机构地区：[1]石家庄学院化工学院,河北石家庄050035 [2]河北中原工程项目管理有限公司,河北石家庄050050 [3]河北师范大学,河北石家庄050024 [4]河北医科大学第二医院,河北石家庄050000 [5]石家庄科技职业学院,河北石家庄052165

出　　处：《煤炭与化工》2021年第7期142-147,共6页Coal and Chemical Industry

基　　金：石家庄市科学技术研究与发展计划201490612;2021-2022年度河北省应用技术大学研究会课题JY2021003;2020年度石家庄市高等教育科学研究项目20201006;石家庄学院2021年大学生创新创业训练计划项目SCXM010;石家庄学院新工科研究与改革实践项目JGXM-202168G。

摘　　要：采用中红外(MIR)光谱开展了天津小站大米的结构研究。实验发现,天津小站大米的红外吸收模式主要包括:ν_(OH-天津小站大米)、ν_(asCH2-天津小站大米)、ν_(sCH2-天津小站大米)、ν_(C=O-天津小站大米)、ν_(amide-Ⅰ-天津小站大米)、ν_(amide-Ⅱ-天津小站大米)和ν_(C-O-天津小站大米)。进一步开展了天津小站大米变温中红外(TD-MIR)光谱研究。实验发现:随着测定温度的升高(303 K~393 K),天津小站大米主要官能团对应的吸收频率和强度均有一定的改变,而天津小站大米的热稳定性进一步降低。本项研究拓展了MIR光谱及TD-MIR光谱技术在重要农产品(天津小站大米)结构及热稳定性的研究范围。The tian jinxiaozhan rice molecular structure had been studied by middle infrared(MIR)spectroscopy.There were ν_(OH-tianjinxiaozhan rice), ν_(asCH2-tianjinxiaozhan rice), ν_(sCH2-tianjinxiaozhan rice), ν_(C=O-tianjinxiaozhan rice), ν_(amide-Ⅰ-tianjinxiaozhan rice), ν_(amide-Ⅱ-tianjinxiaozhan rice and νC-O-tianjinxiaozhan rice).Temperature-dependent middle infrared(TD-MIR)spectroscopy of tianjinxiaozhan rice were studied also.With the increase of the temperature(303 K~393 K),the infrared absorption intensity and frequency of tianjinxiaozhan rice main functional groups changed obviously and thermal stability further reduced.The paper demonstrated the key roles of MIR spectroscopy and TD-MIR spectroscopy in the analysis of structural and thermo stability analysis of the important agricultural products(tianjinxiaozhan rice).

关 键 词：天津小站 大米 红外光谱 变温红外光谱 

分 类 号：O657.33[理学—分析化学]