Development and characterisation of agar/silver nanoparticles-based film from Gracilaria canaliculata for food packaging

Preethi, B. and Vijaya Geetha, B. (2024) Development and characterisation of agar/silver nanoparticles-based film from Gracilaria canaliculata for food packaging. International Food Research Journal (Malaysia), 31. pp. 737-747. ISSN 2231 7546

Gracilaria canaliculata was used as a novel source to extract agar, and for the green synthesis of silver nanoparticles. Silver nanoparticles (0.1 - 0.3%) were incorporated into the agar matrix to develop an environment-friendly food packaging material using the solution casting method. The concentration of nanoparticles affected the physical, thermal, and mechanical properties of the films. Films containing higher concentrations of silver nanoparticles exhibited promising properties, and demonstrated strong antimicrobial activity against both Gram-negative and Gram-positive foodborne pathogens. The film formulation exhibited no cytotoxic effect on HepG2 cells, with cell viability exceeding 94%. These findings suggested that the film possessed favourable characteristics for use as a food packaging material, presenting a potential alternative to plastics.

Full text available from: Official URL: http://www.ifrj.upm.edu.my/31%20(03)%202024/17%20-...

Abstract

Gracilaria canaliculata was used as a novel source to extract agar, and for the green synthesis of silver nanoparticles. Silver nanoparticles (0.1 - 0.3%) were incorporated into the agar matrix to develop an environment-friendly food packaging material using the solution casting method. The concentration of nanoparticles affected the physical, thermal, and mechanical properties of the films. Films containing higher concentrations of silver nanoparticles exhibited promising properties, and demonstrated strong antimicrobial activity against both Gram-negative and Gram-positive foodborne pathogens. The film formulation exhibited no cytotoxic effect on HepG2 cells, with cell viability exceeding 94%. These findings suggested that the film possessed favourable characteristics for use as a food packaging material, presenting a potential alternative to plastics.

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Item Type:	Article
AGROVOC Term:	agar
AGROVOC Term:	food packaging
AGROVOC Term:	silver nanoparticles
AGROVOC Term:	Gracilaria
AGROVOC Term:	extraction
AGROVOC Term:	nanotechnology
AGROVOC Term:	cytotoxicity
AGROVOC Term:	thermal properties
AGROVOC Term:	mechanical properties
AGROVOC Term:	chemicophysical properties
Geographical Term:	India
Uncontrolled Keywords:	Gracilaria canaliculata, silver nanoparticles, agar, food packaging, film
Depositing User:	Nor Hasnita Abdul Samat
Date Deposited:	23 Feb 2026 04:44
Last Modified:	23 Feb 2026 04:44
URI:	http://webagris.upm.edu.my/id/eprint/2640

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