Green and efficient biosynthesis of pectin-based copper nanoparticles and their antimicrobial activities
文献类型： 外文期刊
作者： Li, Pei-jun 1 ; Liang, Jin-ye 2 ; Su, Dong-lin 1 ; Huang, Ying 2 ; Pan, Jiang-juan 2 ; Peng, Ming-fang 2 ; Li, Gao-yan 1 ;
作者机构： 1.Hunan Acad Agr Sci, Hunan Agr Prod Proc Inst, Changsha 410125, Peoples R China
2.Guilin Univ Technol, Coll Chem & Bioengn, Guangxi Key Lab Electrochem & Magnetochem Funct M, Guilin 541004, Peoples R China
3.Cent South Univ, Grad Sch, Longping Branch, Changsha 410125, Peoples R China
4.Hunan Key Lab Fruits & Vegetables Storage Proc &, Changsha 410125, Peoples R China
关键词： Copper nanoparticles; Microwave; Pectin; Antimicrobial activities
期刊名称：BIOPROCESS AND BIOSYSTEMS ENGINEERING （ 影响因子：3.21； 五年影响因子：2.97 ）
ISSN： 1615-7591
年卷期： 2020 年 43 卷 11 期
页码：
收录情况： SCI
摘要： Herein, we reported a green biosynthesis method of copper nanoparticles (CuNPs) at microwave irradiation condition by using pectin as a stabilizer and ascorbic acid as a reducing agent. Under the optimum conditions, CuNPs1 and 2 were synthesized under microwave times 0 and 3 min, respectively. Transmission electron microscope and scanning electron microscope (SEM) tests showed that CuNPs1 and 2 had irregular polygon particles with average diameters of 61.9 +/- 19.4 and 40.9 +/- 13.6 nm, respectively. Zeta potentials of CuNPs1 and 2 were -45.2 and -48.7 mV, respectively. X-ray diffraction, Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), and X-ray photoelectron spectroscopy techniques were used to characterize the properties of CuNPs. Furthermore, inhibition zone tests showed that CuNPs2 exhibited higher antimicrobial activities againstEscherichia coli,Staphylococcus aureus, andAspergillus japonicusthan CuNPs1. The antibacterial activities were also studied by the bacterial growth kinetics in broth media, and CuNPs2 exhibited lower minimum bactericidal concentrations than CuNPs1.
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