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饮食中的益生菌与铁补充剂相结合:一种双方向的方法来降低大米的生物可用性
Rong-Yue Xue1, Yao-Sheng Zhang1, Jin-Feng Xi1
1State Key Laboratory of Water Pollution Control and Green Resource Recycling, School of Environment, Nanjing University, Nanjing, 210023, China.
概括
饮食中的益生菌和铁 (Fe) 可以降低大米中的 (Cd). 结合银氧糖和铁,显著降低了小鼠中的Cd积累,提供了对Cd暴露的策略.
科学领域:
- 环境科学 环境科学
- 营养科学 营养科学
- 毒理学 毒理学 毒理学
背景情况:
- 暴露于来自大米的 (Cd) 会给健康带来风险.
- 已知饮食中的铁 (Fe) 和肠道微生物群调节会影响Cd的生物可用性.
- 益生菌和Fe在降低大米Cd生物可用性的协同作用尚未得到充分研究.
研究的目的:
- 调查单独或与Fe结合的益生菌在减轻来自大米的Cd生物可用性的有效性.
- 探索益生菌和Fe在减少Cd积累方面的潜在作用机制.
主要方法:
- 用Cd污染的米食进行了小鼠生物测试.
- 他们服用了不同的益生菌 (果醇糖,银醇糖,胰岛素) 和Fe补充剂.
- 分析了肠道微生物组成,Fe吸收和脏中的Cd积累.
主要成果:
- 在富含铁的饮食中,益生菌增强了铁的吸收,减少了Cd的吸收.
- 在低Fe饮食中,益生菌改善了肠道微生物群,降低了脏Cd的12.1-20.7%,而没有增加Fe吸收.
- 5%的GOS和100微克Fe/g饮食的组合使脏Cd减少了59%,超过了单独的GOS或Fe.
结论:
- 饮食中的益生菌,特别是GOS,可以通过调节肠道微生物群和增强肠道屏障功能来减少小鼠中的Cd积累.
- 将GOS与Fe相结合提供了一种协同方法,可以显著减轻来自大米消费的Cd健康风险.
- 这项研究提出了一种双重的饮食策略,以有效管理受污染大米Cd暴露的情况.
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