相关实验视频
Updated: May 28, 2025

Analysis and Specification of Starch Granule Size Distributions
Published on: March 4, 2021
双重修饰对玉米粉的物理化学,结构性质和功能组分布的影响:一种分子方法
Sahand Sohrabi1, Hedayat Hosseini1, Saeedeh Shojaee-Aliabadi1
1Department of Food Science and Technology, National Nutrition and Food Technology Research Institute, Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
使用氧化和交叉链接对玉米粉进行双重修改,显著提高了其热稳定性和功能性质. 这些增强粉是理想的食品应用,如加厚剂和薄膜形成剂.
科学领域:
- 食品科学与技术 食品科学与技术
- 聚合物化学 聚合物化学
- 材料科学 材料科学 材料科学
背景情况:
- 玉米粉是一种广泛使用的生物聚合物,在某些工业应用中,其热和结构稳定性受到限制.
- 化学修饰提供了一种途径,可以根据特定的功能要求量身定制粉的特性.
- 了解不同修改方法之间的相互作用对于优化粉性能至关重要.
研究的目的:
- 研究双重修饰 (氧化和交联) 对玉米粉的协同效应.
- 为了增强玉米粉的结构,物理化学和热性能.
- 评估改性粉对于食品工业应用的适用性.
主要方法:
- 玉米粉使用酸盐 (氧化) 和化 (交叉链接) 进行了修改.
- 里埃变换红外光谱法 (FTIR) 分析了功能组.
- 不同扫描热量计 (DSC) 和热重力计分析 (TGA) 评估了热性质.
- 通过X射线衍射 (XRD) 和扫描电子显微镜 (SEM) 检查了结构变化.
主要成果:
- 交叉链接减少了碳酸基,影响了水的吸收和可溶性.
- FTIR证实功能组稳定;DSC显示凝化温度增加 (75.76至80.22°C).
- TGA显示了增强的热电阻;XRD显示了部分无形化;SEM显示了更光滑的颗粒.
结论:
- 双重修改协同改善了玉米粉的热稳定性,可溶性,透明度和糊状稳定性.
- 改性粉在食品工业中表现出优异的潜力,可以作为加厚剂和薄膜形成剂.
- 这项研究提供了对工业优化粉修饰机制的见解.
更多相关视频
05:55High-throughput, Microscale Protocol for the Analysis of Processing Parameters and Nutritional Qualities in Maize Zea mays L.
Published on: June 16, 2018
05:22Transverse Sectioning of Mature Rice Oryza sativa L. Kernels for Scanning Electron Microscopy Imaging Using Pipette Tips as Immobilization Support
Published on: January 25, 2022
相关概念视频
Factors Affecting Dissolution: Drug Permeability, Stability and Stereochemistry
Factors Influencing Drug Absorption: Pharmaceutical Parameters
Factors Affecting Dissolution: Polymorphism, Amorphism and Pseudopolymorphism
Some polymorphic crystals possess lower aqueous solubility than their amorphous counterparts, leading to incomplete absorption. For instance, the oral suspension of Chloramphenicol, which...
Stability of Substituted Cyclohexanes
The two chair conformations of cyclohexanes undergo rapid interconversion at room temperature. Both forms have identical energies and stabilities, each comprising equal amounts of the equilibrium mixture. Replacing a hydrogen atom with a functional group makes the two conformations energetically non-equivalent.
For example, in...
Polymer Classification: Architecture
Factors Influencing Drug Absorption: Physicochemical Parameters
Enhanced drug absorption can be achieved by reducing particle sizes and increasing surface areas, thereby facilitating...