Study on the antifungal effect of silver nano particle-chitosan prepared by irradiation method on Phytophthora capsici causing the blight disease on pepper plant

Authors

  • Le Quang Luan Center for Nuclear Techniques
  • Nguyen Huynh Phuong Uyen Center for Nuclear Techniques
  • Phan Ho Giang Nong Lam University

DOI:

https://doi.org/10.15625/0866-7160/v36n1se.4387

Keywords:

Phytophthora capsici, antifungal activity, pepper plant, silver nano particle.

Abstract

The colloidal silver nano particles with particle sizes of 5, 10 and 15 nm using chitosan (1%) as a stabilizer were prepared by irradiation method using gamma rays from a Co-60 source. The researches of in vitro antifungal activity by silver nano particle-chitosan products on Phytophthora capsici pointed out that the treatments of the products with silver concentrations from 20 to 100 ppm inhibited the growth of P. capsici from 22.6% to 92.9%, respectively. The antifungal activity of P. capsici increased from 62.5 to 100% by the decreasing of silver nano particle size in product from 15 to 5 nm. The antifungal activity on P. capsici by silver nano particle-chitosan product with particle size of 5 nm was 100% at the concentration of 40 ppm, while that by silver nano particle-chitosan product with particle size of 10 nm was 92.9% at the concentration of 100 ppm. The silver nano particle-chitosan prepared by radiation technique may be potentially used as a high-tech, effective and safe fungicide for preventing and treating the foot rot disease caused by P. capsici, a very serious problem on pepper plant.

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Published

07-08-2014

How to Cite

Luan, L. Q., Phuong Uyen, N. H., & Giang, P. H. (2014). Study on the antifungal effect of silver nano particle-chitosan prepared by irradiation method on Phytophthora capsici causing the blight disease on pepper plant. Academia Journal of Biology, 36(1se), 152–157. https://doi.org/10.15625/0866-7160/v36n1se.4387

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Articles