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中国农学通报 ›› 2025, Vol. 41 ›› Issue (22): 27-34.doi: 10.11924/j.issn.1000-6850.casb2024-0693

• 农学·农业基础科学 • 上一篇    下一篇

海藻多糖-纳米硒复合物的制备与表征

靳丹丹(), 黄正花, 昌晓宇, 张康康, 魏益华, 张标金()   

  1. 江西省农业科学院农产品质量安全与标准研究所/农产品质量安全江西省重点实验室,南昌 330200
  • 收稿日期:2024-11-14 修回日期:2025-02-15 出版日期:2025-08-05 发布日期:2025-08-11
  • 通讯作者:
    张标金,男,1983年出生,江西赣州人,副研究员,硕士,主要从事富硒水稻研究。通信地址:330200 江西省南昌市南莲路602号 江西省农业科学院农产品质量安全与标准研究所,Tel:0791-82728729,E-mail:
  • 作者简介:

    靳丹丹,女,1982年出生,河南焦作人,研究实习员,硕士,主要从事富硒技术研究。通信地址:330200 江西省南昌市南莲路602号 江西省农业科学院农产品质量安全与标准研究所,E-mail:

  • 基金资助:
    赣鄱俊才支持计划-主要学科学术和技术带头人培养项目“水稻中纳米硒转化调控关键技术研究与示范”(20232BCJ22059); 江西省重点研发计划项目“富硒大米品质提升与标准化生产关键技术研究”(20232BBF60019); 国家自然科学基金项目“OsHSE1调控水稻籽粒硒运输代谢的分子机理”(32260067)

Preparation and Characterization of Alginate Polysaccharide-Selenium Nanoparticles Complex

JIN Dandan(), HUANG Zhenghua, CHANG Xiaoyu, ZHANG Kangkang, WEI Yihua, ZHANG Biaojin()   

  1. Institute of Quality Safety and Standard of Agricultural Products, Jiangxi Academy of Agricultural Sciences/Key Laboratory of Agricultural Product Quality and Safety in Jiangxi Province, Nanchang 330200
  • Received:2024-11-14 Revised:2025-02-15 Published:2025-08-05 Online:2025-08-11

摘要:

本研究旨在优化海藻多糖-纳米硒(APS-SeNPs)的制备工艺,开发高效稳定的新型纳米硒肥。通过正交试验结合单因素试验设计制备APS-SeNPs,以吸光度比值(A410/A490)作为APS-SeNPs粒径及稳定性的关键指标,采用扫描电子显微镜-能谱仪(SEM-EDS)表征APS-SeNPs形态结构和元素分布。研究结果表明,APS-SeNPs的最佳制备条件为APS浓度1200 mg/L、维生素C与亚硒酸钠(Na2SeO3)摩尔比4:1、反应温度45℃、时间1.5 h。该条件下制备的APS-SeNPs呈均匀分散的球形结构,粒径为(91.30±7.20) nm,A410/A490为1.96±0.01,硒(Se)负载量为31.51%。能谱分析显示,与未被海藻多糖修饰的纳米硒(SeNPs)相比,APS-SeNPs中碳、氧元素占比分别提升38.97%、336.94%,证实海藻多糖成功修饰了纳米硒颗粒表面。本优化工艺制备的APS-SeNPs兼具良好的稳定性和较高的Se负载量,为新型纳米硒肥开发提供了理论依据与技术支撑。

关键词: 纳米硒, 海藻多糖, 制备, 扫描电镜, 能谱分析, 双波长比色法(A410/A490), 正交试验, 单因素试验

Abstract:

The study aimed to optimize the preparation process of alginate polysaccharide-selenium nanoparticles (APS-SeNPs) for developing efficient and stable nano-selenium fertilizers. The combination experiment of orthogonal and single-factor was designed to prepare APS-SeNPs. The ratio of absorbance at 410 nm to 490 nm (A410/A490) served as a critical indicator for evaluating particle size and stability of APS-SeNPs. Morphological structure and element distribution characterization of APS-SeNPs were performed using scanning electron microscopy-energy dispersive spectroscopy (SEM-EDS). The research results indicated that the optimal preparation conditions of APS-SeNPs were determined as follows. APS concentration of 1200 mg/L, molar ratio of vitamin C (Vc) to sodium selenite (Na2SeO3) at 4:1, reaction temperature of 45℃, and reaction time of 1.5 h. The prepared APS-SeNPs exhibited uniformly dispersed spherical structure which particle size was (91.30±7.20) nm, with A410/A490 ratio of 1.96±0.01 and selenium (Se) loading capacity of 31.51%. Energy spectrum analysis revealed that the proportion of carbon and oxygen elements in APS-SeNPs increased by 38.97% and 336.94%, respectively, compared with selenium nanoparticles (SeNPs) unmodified by alginate polysaccharide, indicating that alginate polysaccharide modified the surface of selenium nanoparticles effectively. The APS-SeNPs prepared by this optimized process possessed fine stability and Se loading, providing a theoretical basis for the development of novel nano-selenium fertilizers.

Key words: selenium nanoparticles, alginate polysaccharide, preparation, scanning electron microscopy, energy spectrum analysis, dual-wavelength spectrophotometry (A410/A490), orthogonal experimental design, single-factor experiment