Xin Ji, Weiguo Tian*, Kunfeng Jin, Chaojun Wen, Yingtuan Zhang, Jian Yu and Jun Zhang*,
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引用次数: 0
摘要
以合成化学品(杀菌剂、杀虫剂和化肥)为基础的高产现代农业养活了不断增长的全球人口。彻底放弃使用农药和化肥无疑会在全球范围内造成严重的粮食危机,迫切需要可持续的替代解决方案来阻止杀虫剂和化肥的过度使用。本文提出了一种通用的绿色策略,用于种子保护和长期储存,使用基于纤维素的光热涂层(PDA NPs@Cell-N+),该涂层由光热聚多巴胺纳米粒子(PDA NPs)和带正电的纤维素衍生物(cells - n +)组成,只需在红外照射下即可根除种子传播的细菌和真菌。绿豆(Vigna radiata)的体外、体内试验和苗期表型表明,光热处理可以有效地清除病原菌,其中包括顽强的黄曲霉(抑制率>99%)。至此,绿豆的种子传播疾病终于可以得到预防。由于优异的溶解度和生物相容性,PDA NPs@Cell-N+涂层可以清洗和回收,没有食品安全问题。PDA NPs@Cell-N+是一种基于自然的种子保护和长期粮食储存解决方案。
Cellulose-Based Photothermal Coating: A Sustainable Solution for Seed Protection and Long-Term Grain Storage
High-output modern agriculture based on synthetic chemicals (biocides, pesticides, and fertilizers) feeds the growing global population. To completely abandon the use of pesticides and fertilizers will undoubtedly cause a severe food crisis worldwide, and sustainable alternative solutions are urgently demanded to stop biocides and fertilizers overuse. Herein, a versatile and green strategy is proposed for seed protection and long-term storage of grains using a cellulose-based photothermal coating (PDA NPs@Cell-N+) that consists of photothermal polydopamine nanoparticles (PDA NPs) and a positive-charged cellulose derivative (Cell-N+) to eradicate seed-borne bacteria and fungi simply under infrared irradiation. In vitro and in vivo assays and the seedling-stage phenotypes of mung bean (Vigna radiata) suggest that pathogenic microbes, including the tough Aspergillus flavus (inhibition ratio >99%), can be efficiently eliminated by photothermal therapy. Thus, the seed-borne diseases of mung beans can finally be prevented. Owing to excellent solubility and biocompatibility, the PDA NPs@Cell-N+ coating can be washed off and recycled without food safety concerns. PDA NPs@Cell-N+ can be a nature-based solution for seed protection and long-term grain storage.
期刊介绍:
ACS Nano, published monthly, serves as an international forum for comprehensive articles on nanoscience and nanotechnology research at the intersections of chemistry, biology, materials science, physics, and engineering. The journal fosters communication among scientists in these communities, facilitating collaboration, new research opportunities, and advancements through discoveries. ACS Nano covers synthesis, assembly, characterization, theory, and simulation of nanostructures, nanobiotechnology, nanofabrication, methods and tools for nanoscience and nanotechnology, and self- and directed-assembly. Alongside original research articles, it offers thorough reviews, perspectives on cutting-edge research, and discussions envisioning the future of nanoscience and nanotechnology.