碳氧甲基纤维素表面修改减轻了Fe-MOF对大米的毒性,并改善了铁的吸收
Yuanbo Li1,2, Yuying Tang1,2, Yanru Ding1,2
1Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China.
Nanomaterials (Basel, Switzerland)
|March 12, 2025
概括
铁基金属有机框架 (Fe-MOFs) 的碳氧甲基纤维素 (CMC) 封装降低了它们对大米植物的毒性. 这种修改增强了铁的吸收,减轻了生长抑制,提高了农业应用的生物安全性.
科学领域:
- 农业科学 农业科学
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
背景情况:
- 基于铁的金属有机框架 (Fe-MOFs) 显示了农业化学品输送和铁补充的潜力.
- 评估Fe-MOF的植物毒性对于其安全的农业使用至关重要.
- NH2-MIL-101 ((Fe) (MIL) 是一个有前途的Fe-MOF用于农业应用.
研究的目的:
- 为了研究Fe-MOFs对大米的生物毒性作用.
- 评估甲基纤维素 (CMC) 修改对Fe-MOF特性和植物相互作用的影响.
- 为了确定CMC封装是否增强铁的吸收并减轻米中的Fe-MOF植物毒性.
主要方法:
- 进行了水培实验,以评估Fe-MOF对大米的影响.
- NH2-MIL-101 ((Fe) 被封装在CMC中以创建MIL@CMC.
- 分析了铁的积累,不同pH值的离子释放率,大米生长,生物质和氧化应激标志物 (CAT,POD,SOD,MDA).
主要成果:
- MIL@CMC减少了Fe-MOF在水溶液中的Fe离子释放 (pH 5和7).
- MIL@CMC显著增加了大米的地面和根部的铁吸收.
- 在中高暴露条件下,MIL@CMC减轻了生长抑制和增加了大米生物质,与未经修改的MIL不同,MIL诱导了氧化应激.
结论:
- 对NH2-MIL-101 ((Fe) 的CMC封装有效降低了其植物毒性.
- 这种修饰增强了铁的吸收,并通过减轻氧化损伤来促进大米的生长.
- 用CMC合理修改Fe-MOF可提高其生物安全性和有效性,用于农业应用.
相关概念视频
01:05Bioavailability Enhancement: Drug Stability Enhancement and GI Retention
336
Improving a drug's stability in the gastrointestinal (GI) tract is paramount for enhancing its bioavailability and therapeutic effectiveness. Various strategies are employed to protect the drug from the harsh gastric milieu and to ensure its release and absorption at the desired site within the GI tract.Polymer coatings are one such method used to shield drugs from the stomach's acidic environment. By preventing premature drug release, these coatings improve the bioavailability of unstable...
336
01:24Microbes and Other Elemental Cycles
95
Microbial activity plays a pivotal role in the biogeochemical cycling of iron and manganese, especially at the redox gradients characteristic of stratified aquatic environments. These cycles are driven by microbial transformations between oxidized and reduced forms of the metals, allowing organisms to exploit them for metabolic energy and structural purposes.Iron Cycling Across Redox GradientsIn neutral, oxygen-rich surface waters, iron is predominantly found in its oxidized, insoluble ferric...
95