Biosynthesis of gold nanoparticles by Lavender (Lavandula angustifolia) seed extract

The tendency to use and produce nanoparticles is growing daily, due to their industrial and medical properties. Nonetheless, metallic nanoparticles, especially gold nanoparticles, are widely used in the fields of cancer treatment, pharmacy, targeted transfer of biological compounds and cosmetics production. The use of plant tissues has attracted scientists from among the affordable and low-risk environment methods of producing nanoparticles in suitable size and scale. In this study, lavender seed extract was prepared by the heat-soaking method. Then gold nanoparticles were produced by combining the extract with gold nitrate and dilution with deionized water. Also, effective factors such as pH, temperature and time are studied by UV-visible spectrophotometry and the optimal synthesis conditions are pH = 9.5, temperature 35°C, and time of 30 minutes. By increasing the temperature and time, size and amount of nanoparticle synthesis increased and no nanoparticles were synthesized in the acidic pH. Then the size and structure of produced nanoparticles were investigated by DLS and TEM analysis. The results showed that the gold nanoparticles produced with a crystalline, spherical and homogeneous structure with an average diameter of 50 nm.

کلیدواژه ها:

Biosynthesis ، Bionanotechnology ، Lavandula angustifolia ، Seed extract ، Gold nanoparticles