Development of biodegradable antimicrobial films containing lignin nanoparticles and natural agents

Name: Pathtamawadee Nuamduang

LCSH: Kasetsart University -- Dissertations. Ph.D. (Packaging Technology) 2023.

Classification :.LCCS: TS198.3.P5

LCSH: Kasetsart University. -- Department of Packaging and Materials Technology -- Dissertations.

LCSH: Plastics in packaging

LCSH: Plastic films

LCSH: Polybutenes.

LCSH: Nanoparticles.

Abstract: This study examines the development of poly(butylene succinate) (PBS) films incorporated with spherical lignin nanoparticles (LNP) and natural agents (NA) such as vanillin (VAN), trans-cinnamaldehyde (CIN), and citral (CIT) via blown film extrusion. The primary objective was to evaluate these composite films' release behavior and vapor-phase antifungal efficacy against tropical fruit diseases. Solvent extraction analysis revealed that PBS/LNP/NA films retained higher concentrations of active agents compared to PBS/NA films. The incorporation of lignin and natural agents significantly influenced the films' morphology, mechanical, and barrier properties. Mathematical modeling of the release kinetics indicated that diffusion was primarily dependent on NA concentration, with diffusion coefficients ranging from 10-9 to 10-13 m²/s. Trans-cinnamaldehyde exhibited the fastest migration, followed by vanillin and citral. PBS/LNP/NA films demonstrated enhanced antifungal efficacy against Colletotrichum gloeosporioides in the vapor phase, indicating their potential as active packaging materials for extending the shelf life of tropical fruits. Additionally, sustainable PBS films containing LNP and trans-cinnamaldehyde (CN) were specifically developed to preserve mango freshness and enhance food safety. Composite films, including PBS/LN, PBS/CN, and PBS/LN/CN, were produced via blown film melt extrusion. The effects of combining CN with LN on CN retention, as well as the thermal, mechanical, and barrier properties, diffusion coefficients, and antifungal activity, were comprehensively analyzed both in vitro and in vivo. The results showed that PBS/LN/CN composite films retained higher amounts of CN than PBS/CN films, indicating improved compatibility and homogeneity. These composite films exhibited enhanced barrier properties and homogeneous surfaces. Furthermore, PBS/LN/CN films demonstrated superior antifungal activity, effectively inhibiting the growth of Colletotrichum gloeosporioides and maintaining mango quality during storage. The incorporation of lignin nanoparticles in PBS films prolongs the sustained release of antimicrobial agents, significantly inhibiting microbial growth and extending the shelf-life of mangoes.

Kasetsart University. Office of the University Library

Address: Bangkok

Email: tdckulib@ku.ac.th

Name: Pattarin Leelaphiwat

Role: Thesis Advisor

Name: Amporn Sane

Role: Thesis Co-Advisor

Name: Bongkot Hararak

Role: Thesis Co-Advisor

Name: Kasetsart University.

Role: Thesis Advisor

Created: 2023

Modified: 2025-06-26

Issued: 2025-06-26

วิทยานิพนธ์/Thesis

วิทยานิพนธ์/Thesis

application/pdf

URL: http://www.lib.ku.ac.th/KUthesis/2566/pathtamawadee-nua-all.pdf

CallNumber: TS198.3.P5.P38

eng

DegreeName: Doctor of Philosophy

Level: Doctoral Degree

Descipline: Packaging Technology

Grantor: Kasetsart University

©copyrights Kasetsart University

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