研究含有果实和蔬菜点的细胞壁材料中的放松现象:专注于方法和组成
J Van Audenhove1, C N Ngong1, A M Van Loey1
1Laboratory of Food Technology, Department of Microbial and Molecular Systems, KU Leuven, Kasteelpark Arenberg 22, B-3001 Leuven, Belgium.
Carbohydrate polymers
|September 14, 2025
概括
这项研究研究了植物性酒精不溶性残留物 (AIR) 中的放松现象. 构成,特别是多糖和pectin结构,影响放松温度 (Tr),影响食品加工和物理崩.
科学领域:
- 食品科学与技术 食品科学与技术
- 材料科学 是一种材料科学.
- 生物物理学的生物物理.
背景情况:
- 了解植物材料中的放松现象对于预测它们在加工和储存期间的行为至关重要.
- 酒精不溶性残留物 (AIR) 是植物细胞壁的关键组成部分,影响材料特性.
研究的目的:
- 在果,胡卜和番茄的半干空气中进行α-放松的特征.
- 为了研究水分含量 (MC) 和化学成分对放松行为的影响.
- 为了比较不同的分析技术来评估放松现象.
主要方法:
- 差分扫描热量计 (DSC) 用于测量热性能.
- 热机械压缩测试 (TMCT) 测试可压缩性.
- 对粘弹性特性进行动态机械热分析 (DMTA).
- AIR组成的化学表征.
主要成果:
- DSC显示放松温度 (Tr) 的变化很小,但植物起源之间的Tr线存在显著差异.
- 较高的无形多糖和分支性pectin与较低的Tr值相关.
- 机械技术 (TMCT,DMTA) 提供了更清晰的信号,显示了分子移动性变化与MC和温度的变化,矩阵上的Tr线在很大程度上类似.
结论:
- 植物细胞壁的组成显著影响空气中的放松现象.
- 机械方法在检测与MC和温度相关的放松变化方面比DSC更敏感.
- 获得的洞察力可以为预测食品中的物理崩现象提供信息.
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