中国农业科技导报 ›› 2025, Vol. 27 ›› Issue (6): 148-157.DOI: 10.13304/j.nykjdb.2023.0961

• 食品质量 加工储运 • 上一篇    

薯类淀粉晶区/非晶区结构及热变性三级中红外光谱研究

王维1(), 杜林楠2, 徐元媛2, 于宏伟2()   

  1. 1.齐齐哈尔大学轻工与纺织学院,黑龙江 齐齐哈尔 161006
    2.石家庄学院化工学院,石家庄 050035
  • 收稿日期:2023-12-28 接受日期:2024-04-09 出版日期:2025-06-15 发布日期:2025-06-23
  • 通讯作者: 于宏伟
  • 作者简介:王维 E-mail:21493009@qq.com
  • 基金资助:
    黑龙江省基本科研业务费项目(145309304);河北省高等学校科学技术研究项目(Z2020113)

Three-level Mid-infrared Spectroscopy Study of Tubers Starch Crystal/amorphous Structure and Thermostability

Wei WANG1(), Linnan DU2, Yuanyuan XU2, Hongwei YU2()   

  1. 1.College of Light Industry and Textile,Qiqihar University,Heilongjiang Qiqihar 161006,China
    2.Chemical Technology,Shijiazhuang University,Shijiazhuang 050035,China
  • Received:2023-12-28 Accepted:2024-04-09 Online:2025-06-15 Published:2025-06-23
  • Contact: Hongwei YU

摘要:

采用一维中红外光谱(mid-infrared spectroscopy,MIR)和二阶导数中红外光谱研究薯类淀粉(红薯淀粉、马铃薯淀粉和木薯淀粉)的结构,并进一步采用二维中红外光谱(2D-MIR)进行薯类淀粉晶区/非晶区的结构及热变性研究。结果表明,薯类淀粉结构的红外吸收模式主要包括C-O伸缩振动模式(νC-O-薯类),薯类淀粉均含有晶区结构及非晶区结构。随着测定温度的升高(303~433 K),薯类淀粉晶区/非晶区结构对于热的敏感程度及变化快慢顺序均存在着一定的差异性。3种淀粉非晶区结构对于温度变化比较敏感,其结构最先改变,而晶区结构相对稳定。以上结果为研究薯类淀粉的性能提供了理论基础,拓宽了中红外光谱在食品领域的应用。

关键词: 薯类淀粉, 晶区/非晶区结构, 中红外光谱, 热变性

Abstract:

The structure of tubers starch including sweet potato starch, potato starch and tapioca starch were studied by one-dimensional mid-infrared spectroscopy (MIR) and second derivative MIR. The crystal/amorphous structure and thermostability of 3 kinds of starch (sweet patota starch, patota starch and tapioca starch) were also discovered by two dimensional MIR (2D-MIR). The results showed that the infrared absorption modes of tubers starch included C-O stretching vibration (νC-O-tubers). The tubers starch contained crystal and amorphous structures. With the increase of temperature (303~433 K), the main functional group of tubers starch crystal/amorphous structure showed different sensitivity and order to the heat. The amorphous structure of 3 kinds of starch were more sensitive to temperature changes, and changed firstly, while the crystal structure was relatively stable. Above results provided a theoretical basis for studying the properties of tubers starch and expanding the application of MIR spectroscopy in the food field.

Key words: tubers starch, crystal/amorphous structure, middle infrared spectroscopy, thermostability

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