食品工业科技2025，Vol.46Issue(10)：75-83,9.DOI:10.13386/j.issn1002-0306.2024050394
干姜纳米银材料制备及功能活性研究
Preparation and Functional Activity of Nano-silver Materials for Dried Ginger
摘要
Abstract
To address the lengthy and pollution-intensive process of traditional nano-silver synthesis,This paper developed a method using dried ginger extract,which was rich in active substances.This paper investigated the effects of various factors,including the concentration of dried ginger extract,silver nitrate concentration,heating temperature,and heating time,on nano-silver synthesis through single-factor experiments.The synthesized nano-silver was characterized using ultraviolet-visible(UV-Vis)absorption spectroscopy,transmission electron microscopy(TEM),Zeta potential measurement,Fourier transform infrared(FTIR)spectroscopy,and thermal stability analysis.Additionally,its antibacterial and antioxidant activities were examined.The optimized synthesis conditions were found to be:16 mg/mL dried ginger extract,0.02 mol/L silver nitrate(AgNO3),a temperature of 60℃,and a heating time of 155 min.Under these conditions,the nano-silver exhibited a distinct UV absorption peak at 418 nm,a spherical shape,an average particle size of 22.43 nm,a lattice spacing of 0.2325 nm,good dispersibility,and a face-centered cubic structure.The scavenging capacities of 100 μg/mL nano-silver for DPPH and ABTS+free radicals were 50％and 52.2％,respectively.The minimum inhibitory concentration(MIC)and 2MIC of silver nanoparticles significantly inhibited the growth of Erwinia carotovora,Pseudomonas fluorescens,Bacillus subtilis,Escherichia coli,Staphylococcus aureus,and Listeria monocytogenes.The inhibitory mechanism involved disrupting the cell membrane structure,leading to leakage of cellular contents and bacterial death.The nano-silver produced by this method demonstrates good stability and holds promising potential for applications in fruit and vegetable preservation and biomedicine.关键词
干姜提取物/纳米银/抑菌活性/抗氧化活性/绿色合成Key words
dried ginger extract/nano-silver/antimicrobial activity/antioxidant activity/green synthesis分类
轻工纺织引用本文复制引用
吴俊杰,焦文雅,张雨,孙金淏,王向红..干姜纳米银材料制备及功能活性研究[J].食品工业科技,2025,46(10):75-83,9.基金项目
河北省重点研发计划项目(21327314D) （21327314D）
河北省农业产业体系(HBCT2023100206). （HBCT2023100206）
