Antibacterial activity and catalytic activity of biosynthesised silver nanoparticles by flavonoids from petals of Lilium casa blanca

Micro & nano letters

article

Qiushui Luo¹  Weiwei Su¹  Haimin Li¹  Jianhua Xiong¹  Wenjun Wang¹  Wuying Yang¹  Juan Du¹ 

[1] College of Food Science and Engineering, Jiangxi Agricultural University;Key Lab for Agro-products Processing & Quality Control of Nanchang

关键词: antibacterial activity;    catalysis;    silver;    nanoparticles;    nanomedicine;    nanofabrication;    pH;    ultraviolet spectra;    visible spectra;    transmission electron microscopy;    light scattering;    electrokinetic effects;    Fourier transform infrared spectra;    microorganisms;    organic compounds;    reduction (chemical);    particle size;    reaction rate constants;    antibacterial activity;    catalytic activity;    biosynthesised silver nanoparticles;    Lilium casa blanca petals;    flavonoid extracts;    reaction conditions;    pH;    flavonoid concentration;    silver nitrite;    reaction temperature;    reaction time;    UV-visible spectroscopy;    transmission electron microscopy;    dynamic light scattering;    zeta potential measurement;    Fourier transform infrared spectroscopy;    FTIR spectroscopy;    TEM;    spherical particles;    Escherichia coli;    Salmonella;    Bacillus subtilis;    Staphylococcus aureus;    p-nitrophenol hydroboration;    catalytic reduction;    pseudofirst-order kinetics;    temperature 70 degC;    time 1 h;    Ag;   

DOI  :  10.1049/mnl.2018.0055

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

A number of previous studies have shown that there is a correlation between Helicobacter Pylori (H. Pylori) and colorectal neoplasia. However, other studies could not prove whether there is a relation between the H. Pylori infection and the development of neoplastic polyploidy lesions in the colon .  The aim of this study was to examine whether there is an in increase in the development of neoplastic lesions in the colon depending on the H. Pylori infection. In this case controlled retrospective study, patients who underwent both endoscopy and colonoscopy at the endoscopy unit of our hospital between January 2012 and January 2013 were evaluated. At colonoscopy, patients without any pathology or whose colon mucosa pathologies were reported as “nonspecific colon mucosa” were classified as the first group (n = 85), and those with one or more than one polyps as the second group (n = 75). The groups were compared in terms of the presence and intensity of H. Pylori, and severity of inflammatory activity and intestinal metaplasia. The results of the two groups were analogous with regard to H. Pylori positivity (p>0.05). No statistical difference was observed between the two groups with respect to H. Pylori intensity and severity of inflammatory activity in the H. Pylori positive patients (p>0.05). In conclusion, no relation between the presence of H. Pylori and the formation of polyp in the colon was found.

【 授权许可】

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