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损坏的粉颗粒的特性:颗粒结构与水粉聚合物相互作用之间的关系
Andrés Gustavo Teobaldi1,2, Esteban Josué Carrillo Parra1,2, Gabriela Noel Barrera1,2
1Instituto de Ciencia y Tecnología de los Alimentos Córdoba (ICYTAC-CONICET), Universidad Nacional de Córdoba, Av. Filloy S/N, Ciudad Universitaria, Córdoba CP 5000, Argentina.
小麦粉颗粒 (DS) 的机械损伤会改变颗粒的大小和表面结构. 增加受损粉含量可以增强水的吸收,但会削弱水粉相互作用.
科学领域:
- 食品科学 食品科学 食品科学
- 材料科学 是一种材料科学.
- 生物化学 生化学
背景情况:
- 小麦粉颗粒在食品系统中至关重要,其特性受到加工的影响.
- 机械损伤 (DS) 可以显著改变粉颗粒的形态和功能.
- 了解这些变化对于优化粉产品开发至关重要.
研究的目的:
- 研究不同损坏粉 (DS) 水平对小麦粉颗粒形态和结构的影响.
- 分析DS含量与水粉相互作用之间的关系.
- 阐明机械损伤如何影响粉颗粒的物理和化学特性.
主要方法:
- 粒子大小分析和扫描电子显微镜 (SEM) 用于形态学.
- FT-IR光谱学和X射线衍射 (XRD) 检测颗粒结构和结晶度.
- 热重力测量分析 (TGA) 和动态蒸汽吸附 (DVS) 检测水结合特性.
主要成果:
- 增加的DS将B型颗粒转移到更大尺寸和A型颗粒转移到更小尺寸,通过SEM观察到更粗的表面.
- FT-IR和XRD显示了与更高的机械损伤相关的结晶性降低.
- 更高的DS增加了吸水能力,改变了结合水的比例,降低了蒸发温度 (TGA).
- 随着DS的增加,DVS表明水单层附着的驱动力减少,这表明水粉相互作用较弱.
结论:
- 机械损伤显著改变了小麦粉颗粒的形态,结构和水结合特性.
- 增加的DS导致水的吸收增强,但水粉聚合物链相互作用较弱.
- 这些发现提供了关于机械损伤如何影响基于粉的系统的质和热行为的见解.
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