通过优化射频和酶化水解来增强玉米不溶性食纤维的水分,可溶性和结构性质
Victory Igwe1, Deandrae Smith1
1Department of Food Science, Purdue University, West Lafayette, Indiana, USA.
Journal of food science
|July 15, 2025
概括
一种新的射频和酶性水解方法改善了玉米不溶性食纤维 (IDF) 的功能. 这种可持续的方法提高了纤维的水分和溶解性,为食品和营养药物应用创造了有价值的成分.
科学领域:
- 食品科学与技术 食品科学与技术
- 生物材料工程 生物材料工程
- 营养生物化学 营养生物化学
背景情况:
- 原生玉米不溶性食纤维 (IDF) 由于其结构和低水分,功能不佳.
- 对于IDF修改的传统处理方法可以降解营养素或留下化学残留物.
- 需要可持续的,无残留的方法来增强IDF属性.
研究的目的:
- 开发和优化协同作用的射频 (RF) 和酶解水解 (EH) 处理,用于修改玉米IDF.
- 评估RF+EH对IDF结构,水分,可溶性和发酵性的影响.
- 为了比较RF+EH方法与传统的酶性水解和其他处理方法.
主要方法:
- 优化的射频 (RF) 参数被用来预先调整玉米IDF矩阵.
- 酶性水解 (EH) 应用于RF预先调节的纤维.
- 分析了包括粒子大小,表面积,可溶性食纤维 (SDF) 含量,水分含量,持水能力,结晶性和颜色在内的物理化学性质.
- 使用X射线衍射 (XRD) 和扫描电子显微镜 (SEM) 进行结构分析.
主要成果:
- 射频预条件显著减少了IDF粒子大小和增加了特定表面积,提高了酶效率.
- 联合RF + EH处理将SDF增加了50%,并比单独EH更有效地降低了IDF含量.
- 通过RF+EH,提高了水合性质,保持水分的能力和发酵能力,同时保持结构完整性并最大限度地减少营养损失.
- 结构分析证实透度增加和结晶性改变,与传统方法相比,化学残留量最小.
结论:
- 协同RF + EH处理是一种可持续和有效的方法,可以增强玉米IDF的功能.
- 这种方法为生产功能纤维的传统方法提供了一个可扩展的,节能的替代方案.
- 修改后的IDF适用于营养药和高纤维食品的应用,满足工业对成本效益和可持续性的需求.
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