米磨粉通过营养损失和输送器激活提高了的生物可用性
Yi Gu1,2, Yi-Fan Zhang1, Di Zhao1
1Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, College of Resources and Environmental Sciences,Nanjing Agricultural University, Nanjing 210095, China.
Journal of agricultural and food chemistry
|August 4, 2025
概括
抛光大米增加有毒 (Cd) 的吸收,通过耗尽必需的矿物质和调节肠道输送器. 这增加了器官中Cd的积累,尽管总Cd含量降低了,但仍存在健康风险.
科学领域:
- 环境毒理学环境毒理学
- 营养科学 营养科学
- 食品科学 食品科学 食品科学
背景情况:
- 米抛光提高了口感,但减少了必需的营养素.
- 这一过程可能会改变 (Cd) 等有毒元素的生物可用性.
研究的目的:
- 调查米如何影响的积累和肠道运输.
- 阐明改变生物可用性背后的机制.
主要方法:
- 将样品磨成棕色和抛光的形式.
- 将磨米给小鼠吃,并测量器官中的积累.
- 梯度研磨实验,以评估研磨强度的影响.
- 矿物补充和同位素追踪 (Cd) 来研究运输机制.
主要成果:
- 抛光大米导致在和肝脏中的积累显著增加 (1.16-4.90倍).
- 磨削强度的增加与较大的积累相关.
- 矿物质补充剂 (Ca,Fe,Zn,) 减少了高达46.1%的积.
- 的吸收主要是由由于矿物质缺乏而导致的输送器上调驱动的.
结论:
- 米抛光增强了的吸收,通过耗尽微量营养素和刺激肠道金属输送器.
- 这种加工权衡会影响大米的营养和毒理特征.
- 调查结果强调了在受污染地区消费抛光大米的风险.
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