Preprint Article Version 1 This version is not peer-reviewed

Silver Nanoparticle-Based Paper Packaging to combat Black Anther Disease in Orchid Flowers

Version 1 : Received: 15 December 2018 / Approved: 17 December 2018 / Online: 17 December 2018 (09:45:17 CET)

A peer-reviewed article of this Preprint also exists.

Nokkrut, B.-O.; Pisuttipiched, S.; Khantayanuwong, S.; Puangsin, B. Silver Nanoparticle-Based Paper Packaging to Combat Black Anther Disease in Orchid Flowers. Coatings 2019, 9, 40. Nokkrut, B.-O.; Pisuttipiched, S.; Khantayanuwong, S.; Puangsin, B. Silver Nanoparticle-Based Paper Packaging to Combat Black Anther Disease in Orchid Flowers. Coatings 2019, 9, 40.

Journal reference: Coatings 2019, 9, 40
DOI: 10.3390/coatings9010040

Abstract

Metal nanoparticle has been reported to have a high antimicrobial activity against fungi, bacteria, and yeasts. In this study, silver nanoparticles (AgNPs) were synthesized using a chemical reduction method, at 90 oC, and used as an antifungal coating in paper packaging, to control the growth of C. gloeosporioides in cut orchid flowers during shipping. AgNPs were characterized by UV-Vis spectroscopy and atomic force microscope (AFM). The results indicated that the shape of AgNPs was spherical and homogenous with an average size of 47 nm. Twenty and 50 particles per million (ppm) concentration of AgNPs, mixed with starch, were prepared as the coating solution. The paper coated with 50 ppm AgNPs exhibited a significant antifungal activity against C. gloeosporioides compared to 20 ppm AgNPs coating. The AgNPs coated paper had a better water resistance and mechanical properties compared to paper without coating. We observed a significant reduction in the number of anthers, of orchid inflorescences, infected by C. gloeosporioides, when stored in the coated boxes. The current study demonstrates that paper boxes coated with AgNPs are a potential solution to control the infection of C. gloeosporioides in the storage of cut orchid flowers.

Subject Areas

Black anther disease; Orchid cut flower; Silver nanoparticles

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