在传统的nixtamalization过程中将玉米转化为tortilla时,粉的物理化学变化与RS2相关
Isela Rojas-Molina1, María G Nieves-Hernandez2, Elsa Gutierrez-Cortez3
1Laboratorio de Química Medicinal, Facultad de Química, Universidad Autónoma de Querétaro, Cerro de las Campanas S/N, Querétaro, Qro., C.P. 76017, Mexico.
Food chemistry
|December 8, 2023
概括
尼克斯塔马化将玉米粉转化为火,增加了耐性粉 (RS). 粉中的正方体纳米晶与这种RS增加有关,特别是RS2.
科学领域:
- 食品科学 食品科学 食品科学
- 材料科学 材料科学 材料科学
- 生物化学 生物化学
背景情况:
- 尼克斯塔玛化是一种传统的过程,用于将玉米转化为马萨和托蒂拉.
- 粉结构显著影响食品的消化能力和耐性粉含量.
研究的目的:
- 为了研究在nixtamalization期间玉米粉的结构变化.
- 为了确定正方体晶体结构和tortilla中耐性粉形成之间的关联.
主要方法:
- 扫描和传输电子显微镜 (SEM,TEM) 以可视化粉颗粒形态和纳米晶体结构.
- 用X射线衍射 (XRD) 分析晶体结构.
- 抗性粉 (RS) 含量的量测定.
主要成果:
- 尼克斯塔马化会导致不同程度的粉颗粒损伤,有些整个颗粒和纳米晶体会持续存在.
- 在粉颗粒和从玉米,马萨和托蒂拉中分离的粉中确定了正方形晶体结构.
- 耐性粉含量从玉米到tortilla (2.61%到5.31%) 和孤立粉 (2.52%到5.61%) 显著增加.
结论:
- 在玉米到蛋糕加工过程中观察到的Orthorhombic纳米晶体是形成抗性粉的组成部分.
- 这些纳米晶体可能是RS2的组成部分,有助于增加tortilla中的耐性粉含量.
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