混合稀和磨粉工艺增强了不溶性玉米纤维的功能和肠道微生物群的发酵能力
Qing Jin1, Yiming Feng2, Xavier Cabana-Puig3
1Department of Food Science and Technology, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, United States; School of Food and Agriculture, University of Maine, Orono, ME 04469, United States.
Food chemistry
|March 1, 2024
概括
结合和物理处理,可显著提高玉米纤维的功能和发酵能力. 经过圆盘研磨后的NaOH产生了优越的水和油容量,并增加了短链脂肪酸的生产.
科学领域:
- 农业科学 农业科学
- 生物化学 生物化学
- 食品科学 食品科学 食品科学
背景情况:
- 玉米纤维是一种纤维纤维素的副产品,具有增值应用的潜力.
- 提高玉米纤维的功能性和发酵性对于其在食品和料行业的使用至关重要.
研究的目的:
- 开发和评估一种结合化学和物理处理工艺,以提高玉米纤维的功能和发酵能力.
- 调查不同和物理磨粉方法对玉米纤维特性的影响.
主要方法:
- 玉米纤维用稀释 (NaOH或NaHCO3) 处理,然后使用物理方法 (盘磨和/或球磨).
- 测量了功能性质,包括保持水分,水膨胀和油容量.
- 在实验室发酵使用猪便注射剂进行,以评估发酵性和短链脂肪酸 (SCFA) 生产.
- 分析了微生物社区的转移和化学结构的变化.
主要成果:
- 与单个治疗相比,联合治疗显著改善了玉米纤维的功能和发酵能力.
- 用NaOH处理的玉米纤维,然后进行圆盘削 (NaOH-DM-CF),表现出最高的保留水 (19.5g/g),水膨胀 (38.8mL/g) 和保持油 (15.5g/g) 容量.
- NaOH-DM-CF产生了最高的SCFA产量 (42.9mM),并促进了微生物向Prevotella转移,增加了酸.
- 结构分析显示,NaOH-DM-CF.中较薄,较松散的结构,以降低链和乙基.
结论:
- 结合和物理处理,可以有效地提高玉米纤维的功能和发酵性质.
- NaOH-DM-CF处理为改善各种应用中的玉米纤维利用提供了一个有希望的策略.
- 观察到的改善与结构性修改有关,包括增加碳水化合物暴露和改变的化学联系.
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