Abstract The facile biogenic synthesis of silver nanoparticles was done using avocado seed aqueous extract and silver salt. Avocado seed aqueous extract was used as an active biomolecule for in situ fabrication of self-assembled silver nanoparticles. This green approach to the mechanism for the formation of uniform sized silver nanoparticles was studied by ultraviolet-visible spectroscopy, field emission scanning electron microscopy and Fourier transform infrared spectroscopy. The effect of incubation time, concentration of silver nitrate, and avocado seed extract concentrations in the synthesis of silver nanoparticle was studied. Spectral splitting in the visible region with the generation of a new plasmon resonance band resulted with concurrent increase in the concentration of phytochemicals and reaction time during the synthesis of particles was observed. This was due to the chemisorption of phytochemicals accompanied by a charge-transfer transition, which may be responsible for the organization and self-assembly of nanoparticles. The phytochemicals present in the extract acted as a reducing agent and simultaneously fabricating the nanoparticles with the phenolics and sugar compounds. The antibrowning and antibacterial activity of silver nanoparticles were tested and could be exploited for their use in food packaging and preservation.

中文翻译：

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植物化学物质对自组装银纳米粒子生物合成过程中光吸收光谱的影响以及与食品应用相关的研究

摘要 使用鳄梨种子水提取物和银盐完成了银纳米颗粒的简便生物合成。鳄梨种子水提取物被用作原位制造自组装银纳米粒子的活性生物分子。通过紫外-可见光谱、场发射扫描电子显微镜和傅里叶变换红外光谱研究了这种形成均匀尺寸银纳米颗粒机制的绿色方法。研究了孵育时间、硝酸银浓度和鳄梨种子提取物浓度对银纳米颗粒合成的影响。可见光区的光谱分裂伴随着新的等离子体共振带的产生，导致植物化学物质浓度和颗粒合成过程中反应时间的同时增加。这是由于植物化学物质的化学吸附伴随着电荷转移转变，这可能是纳米颗粒的组织和自组装的原因。提取物中存在的植物化学物质充当还原剂，同时用酚类和糖类化合物制造纳米颗粒。银纳米粒子的抗褐变和抗菌活性已经过测试，可用于食品包装和保存。它可能负责纳米颗粒的组织和自组装。提取物中存在的植物化学物质充当还原剂，同时用酚类和糖类化合物制造纳米颗粒。银纳米粒子的抗褐变和抗菌活性已经过测试，可用于食品包装和保存。它可能负责纳米颗粒的组织和自组装。提取物中存在的植物化学物质充当还原剂，同时用酚类和糖类化合物制造纳米颗粒。银纳米粒子的抗褐变和抗菌活性已经过测试，可用于食品包装和保存。