从多个角度探讨粉-多聚醇-蛋白质三元系统通过pH对消化的调节机制
Ran Meng1, Ran Feng1, Si-Jie Wu1
1Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, 193 Tunxi Road, Hefei, Anhui 230009, PR China; School of Food and Biological Engineering, Hefei University of Technology, 193 Tunxi Road, Hefei, Anhui 230009, PR China.
粉的pH值显著影响粉的消化能力,在米粉-quercetin-乳清蛋白分离系统中. 酸性条件降低了消化能力并增加了耐性粉,而性条件则相反.
科学领域:
- 食品科学 食品科学 食品科学
- 生物化学 生物化学
- 营养科学 营养科学
背景情况:
- 粉的消化能力是葡萄糖反应的一个关键因素.
- 奎尔塞丁 (QUE) 和乳清蛋白分离物 (WPI) 可以改变食物矩阵的特性.
- 了解pH对这些相互作用的影响对于功能性食品设计至关重要.
研究的目的:
- 为了研究粉消化率的pH依赖调节在米粉-quercetin-乳清蛋白分离物 (RS-QUE-WPI) 系统.
- 阐明粉消化和耐性粉形成的pH驱动变化背后的机制.
主要方法:
- 系统地分析了RS-QUE-WPI在各种pH值 (酸性,中性,性) 的相互作用.
- 评估了WPI-QUE结合亲和力,粉多相互作用和QUE降解动力学.
- 评估结构排序,热稳定性,粘性弹性,溶解性,膨胀力和粉消化能力.
主要成果:
- 酸性条件 (pH3) 增强了结构秩序,提高了热稳定性和粘弹性,减少了溶解性和胀,降低了粉的消化能力,增加了耐性粉 (49.25%).
- 性条件 (pH9) 破坏了结构秩序,加速了QUE降解,增加了粉水解速率,降低了耐性粉含量.
- pH影响了WPI-QUE结合亲和力和粉多相互作用,共同调节了粉的消化能力.
结论:
- 在RS-QUE-WPI等复杂的食品系统中,pH值是粉消化能力和耐性粉形成的关键调节器.
- 酸性条件促进了难以消化的粉结构的形成,有利于血糖控制.
- 这些发现为设计功能性食品提供了洞察力,通过pH操纵量身定制的葡萄糖反应.
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