Impact of agar-glycerol ratios on the physicochemical properties of biodegradable seaweed films: A compositional study.

Autor: Fransiska D; Research Center for Marine and Land Bioindustry, National Research and Innovation Agency, Lombok, Indonesia. Electronic address: dina020@brin.go.id., Abdullah AHD; Research Center for Biomass and Bioproducts, National Research and Innovation Agency, Jl. Raya Bogor Km. 46, Cibinong, Bogor, Indonesia., Nurhayati; Research Center for Marine and Land Bioindustry, National Research and Innovation Agency, Lombok, Indonesia., Irianto HE; Research Center for Marine and Land Bioindustry, National Research and Innovation Agency, Lombok, Indonesia; Food Technology Study Program, Faculty of Food Technology and Health, Sahid University, Jakarta, Indonesia., Nissa RC; Research Center for Biomass and Bioproducts, National Research and Innovation Agency, Jl. Raya Bogor Km. 46, Cibinong, Bogor, Indonesia., Sedayu BB; Research Center for Food Technology and Processing, National Research and Innovation Agency, Yogyakarta, Indonesia., Syamani FA; Research Center for Biomass and Bioproducts, National Research and Innovation Agency, Jl. Raya Bogor Km. 46, Cibinong, Bogor, Indonesia., Raharjo S; Research Center for Marine and Land Bioindustry, National Research and Innovation Agency, Lombok, Indonesia., Suwarti; Research Center for Marine and Land Bioindustry, National Research and Innovation Agency, Lombok, Indonesia., Agusman; Research Center for Marine and Land Bioindustry, National Research and Innovation Agency, Lombok, Indonesia.
Jazyk: angličtina
Zdroj: International journal of biological macromolecules [Int J Biol Macromol] 2024 Sep 22; Vol. 280 (Pt 3), pp. 135855. Date of Electronic Publication: 2024 Sep 22.
DOI: 10.1016/j.ijbiomac.2024.135855
Abstrakt: To develop technology more applicable to industrial settings, this study aimed to produce agar-based bioplastic films using extrusion followed by hot compression. The research examined various amounts of glycerol incorporation as the plasticizer, which also facilitated the flowability of the extrusion process. These variations included agar-glycerol ratios of 75:25, 70:30, 65:35, 60:40, and 55:45 (% w/w). Moreover, the films underwent thorough testing to assess their physical, mechanical, chemical, water sensitivity, surface imaging, and biodegradability properties. The results showed that increasing the amount of glycerol in the agar film matrix generally made the films more sensitive to water, resulting in greater hydrophilicity. This change was primarily owing to the increased presence of hydroxyl groups. It also affected other characteristics, such as enhancing the film's stretchability and thermal stability. Furthermore, a decrease in film density was observed, leading to reduced tensile strength and barrier properties. Moreover, the higher glycerol content improved its surface wettability and the higher agar content accelerated the film's biodegradability rate. Microstructural examination using scanning electron microscopy and chemical analysis (FTIR) revealed a homogeneous mixture of agar and glycerol produced through the extrusion process. These findings demonstrate the potential of extrusion techniques for the large-scale production of agar-based bioplastics.
Competing Interests: Declaration of competing interest The authors declare no conflicts of interest.
(Copyright © 2024 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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