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Biosynthesis of silver nanoparticles using Artemisia annua callus for inhibiting stem-end bacteria in cut carnation flowers

文献类型： 外文期刊

作者： Xia, Qian Hua 1 ; Zheng, Li Ping 2 ; Zhao, Pei Fei 3 ; Wang, Jian Wen 1 ;

作者机构： 1.Soochow Univ, Coll Pharmaceut Sci, Suzhou 215123, Peoples R China

2.Soochow Univ, Sch Architecture & Urban Environm, Suzhou 215123, Peoples R China

3.Yunnan Acad Agr Sci, Flower Res Inst, Kunming 650205, Peoples R China

期刊名称：IET NANOBIOTECHNOLOGY （ 影响因子：1.847； 五年影响因子：2.256 ）

ISSN： 1751-8741

年卷期： 2017 年 11 卷 2 期

页码：

收录情况： SCI

摘要： A biological method for synthesising silver nanoparticles (AgNPs) was developed using the callus extracts from Artemisia annua L. under sunlight at 25,000 lx. The AgNPs were characterised using transmission electron microscopy, atomic force microscope, X-ray diffraction and Fourier transform infrared spectroscopy. The AgNPs were mostly spherical with the size of 2.1 to 45.2 nm (average 10.9 nm). Pulse treatments of AgNPs at 125, 250 and 500 mg/l for 1 h extended vase life of cut carnation (Dianthus caryophyllus cv. Green Land) flowers. Four dominant bacteria strains Arthrobacter arilaitensis, Kocuria sp., Staphylococcus equorum and Microbacterium oxydans were isolated from the stem-ends of cut D. caryophyllus flowers. AgNP pulse inhibited significantly bacterial growth in vase solution and cut stem ends during all of the vase period. The bacteria related blockage in the stem-ends was significantly alleviated by AgNP pulse because of its higher antibacterial efficacy against the dominant bacteria. In addition, ethylene release of cut carnation flowers was inhibited in response to AgNP pulse. This is the first time that the biologically synthesised AgNPs could be applied as a promising preservative agent for cut carnation flowers.

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