Antifungal activity of silver nanoparticles with the potential to control fungal contamination in the male inflorescences of palmyra palm

Name: Suchera Thananimit.

Organization : Prince of Songkla University. Faculty of Science

Email : suchera.l@psu.ac.th

Name: Pichayabha Sorsiw.

Organization : Prince of Songkla University. Faculty of Science

Name: Warapond Wanna.

Organization : Prince of Songkla University. Faculty of Science

Name: Souwalak Phongpaichit.

Organization : Prince of Songkla University. Faculty of Science

keyword: Silver nanoparticles.

LCSH: Microbial contamination.

; Antifungal activity.

LCSH: Palmyra palm.

LCSH: Antifungal agents.

Abstract: Fungal contamination of the male inflorescences of palmyra palm (Borassus flabellifer Linn.) is a serious problem during their storage prior being used as the raw material for making the local One-Tambon-One-Product, a cloth holder known as “Nguang Taan Hom” made by the Phutaan Entrepreneurship, Takua Thung District PhangNga Province, Thailand. Morphological and molecular techniques were used to identify the isolated fungi from male palmyra palm inflorescences. Three major strains: Aspergillus niger, Aspergillus fumigatus and Aspergillus sclerotiorum were studied for antifungal activities and the minimum inhibitory concentration (MIC) of silver nanoparticles (AgNPs) was found to range from 13.5-27 mg mL-1. Then, the efficiency of the AgNPs and silver nanoparticles stabilizing by Polyvinylpyrrolidone (AgNPs-PVP) on the male palmyra palm inflorescences was studied by constructing a chamber model over a period for 9 weeks. The results showed that the group inoculated with Aspergillus niger, Aspergillus fumigatus and Aspergillus sclerotiorum spores developed fungal growth after 4 weeks whereas no fungal growth was observed in the group treated with AgNPs and AgNPs-PVP at 27 μg/ mL until week 7, indicating that dipping with either AgNPs or AgNPs-PVP is able to inhibit the growth of the fungi which cause damage to raw materials and also threaten human health. Therefore, it can effectively extend the storage time of male palmyra inflorescences."

King Mongkut's University of Technology North Bangkok. Central Library

Address: BANGKOK

Email: library@kmutnb.ac.th

Created: 2022

Modified: 2565-09-23

Issued: 2022-09-23

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application/pdf

BibliograpyCitation : APPLIED SCIENCE AND ENGINEERING PROGRESS. vol. 15, no. 4 (Oct-Dec. 2022), p. 1-9.

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