米含有较低的粉含量可能会降低粉的消化能力,这是由于由线性化粉素合成的结晶耐性粉
Upasana Sahoo1,2, Monalisha Biswal1, Lopamudra Nayak1
1ICAR-National Rice Research Institute, Cuttack, India.
Journal of the science of food and agriculture
|December 13, 2024
概括
开发低血糖指数 (GI) 米与高耐性粉 (RS) 是管理2型糖尿病的关键. 研究人员发现,线性氨酸链,而不仅仅是氨酸含量,显著影响米中的粉消化.
科学领域:
- 食品科学 食品科学 食品科学
- 营养科学 营养科学
- 生物化学 生化学
背景情况:
- 磨米的消费,特别是与久坐的生活方式,增加2型糖尿病的风险.
- 开发低血糖指数 (GI) 米与高耐性粉 (RS) 对于糖尿病管理至关重要.
- 粉含量 (AC) 和粉蛋白链线性都影响了粉的消化能力.
研究的目的:
- 调查影响大米中粉消化能力的因素.
- 为了确定具有高耐性粉 (RS) 和低血糖指数 (GI) 的米基因型.
- 了解氨基烯蛋白结构在耐性粉形成中的作用.
主要方法:
- 分析了110种大米基因型的GI,RS和AC.
- 利用一个pullulanase测试来评估粉脱枝酶活性.
- 检查了粉形态,生物可访问性和粘贴性质.
主要成果:
- 在GI (52.49-63.0),RS (0.64%-2.28%) 和AC (3.82%-24.52%) 中观察到广泛的变化.
- 仅仅粉糖含量并不能决定消化速度,正如对比的IG 23和IG 40基因型所表明的那样.
- 受到pullulanase活性影响的线性氨基蛋白链与低AC大米 (IG 23) 中结晶的RS有关.
结论:
- 增强的pullulanase活性会导致线性化粉素,降低低粉素米中粉的消化能力.
- 这项研究报告了自然发生的高RS在低AC大米 (IG 23).
- 低GI和高RS的米制食品是对抗2型糖尿病的有希望的策略.
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