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Antimicrobial and physical-mechanical properties of agar-based films incorporated with grapefruit seed extract.
Carbohydr Polym. 2014 Feb 15; 102:708-16.CP

Abstract

The use of synthetic petroleum based packaging films caused serious environmental problems due to their difficulty in recycling and poor biodegradability. Therefore, present study was aimed to develop natural biopolymer-based antimicrobial packaging films as an alternative for the synthetic packaging films. As a natural antimicrobial agent, grapefruit seed extract (GSE) has been incorporated into agar to prepare antimicrobial packaging film. The films with different concentrations of GSE were prepared by a solvent casting method and the resulting composite films were examined physically and mechanically. In addition, the films were characterized by FE-SEM, XRD, FT-IR and TGA. The incorporation of GSE caused increase in color, UV barrier, moisture content, water solubility and water vapor permeability, while decrease in surface hydrophobicity, tensile strength and elastic modulus of the films. As the concentration of GSE increased from 0.6 to 13.3 μg/mL, the physical and mechanical properties of the films were affected significantly. The addition of GSE changed film microstructure of the film, but did not influence the crystallinity of agar and thermal stability of the agar-based films. The agar/GSE films exhibited distinctive antimicrobial activity against three test food pathogens, such as Listeria monocytogenes, Bacillus cereus and Escherichia coli. These results suggest that agar/GSE films have potential to be used in an active food packaging systems for maintaining food safety and extending the shelf-life of the packaged food.

Authors+Show Affiliations

Department of Food Engineering and Bionanocomposite Research Institute, Mokpo National University, 61 Dorimri, Chungkyemyon, Muangun, 534-729 Jeonnam, Republic of Korea.Department of Food Engineering and Bionanocomposite Research Institute, Mokpo National University, 61 Dorimri, Chungkyemyon, Muangun, 534-729 Jeonnam, Republic of Korea. Electronic address: jwrhim@mokpo.ac.kr.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

24507339

Citation

Kanmani, Paulraj, and Jong-Whan Rhim. "Antimicrobial and Physical-mechanical Properties of Agar-based Films Incorporated With Grapefruit Seed Extract." Carbohydrate Polymers, vol. 102, 2014, pp. 708-16.
Kanmani P, Rhim JW. Antimicrobial and physical-mechanical properties of agar-based films incorporated with grapefruit seed extract. Carbohydr Polym. 2014;102:708-16.
Kanmani, P., & Rhim, J. W. (2014). Antimicrobial and physical-mechanical properties of agar-based films incorporated with grapefruit seed extract. Carbohydrate Polymers, 102, 708-16. https://doi.org/10.1016/j.carbpol.2013.10.099
Kanmani P, Rhim JW. Antimicrobial and Physical-mechanical Properties of Agar-based Films Incorporated With Grapefruit Seed Extract. Carbohydr Polym. 2014 Feb 15;102:708-16. PubMed PMID: 24507339.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Antimicrobial and physical-mechanical properties of agar-based films incorporated with grapefruit seed extract. AU - Kanmani,Paulraj, AU - Rhim,Jong-Whan, Y1 - 2013/11/08/ PY - 2013/08/22/received PY - 2013/10/30/revised PY - 2013/10/31/accepted PY - 2014/2/11/entrez PY - 2014/2/11/pubmed PY - 2014/10/18/medline KW - Active packaging KW - Agar KW - Antimicrobial KW - Food packaging KW - Grapefruit seed extract SP - 708 EP - 16 JF - Carbohydrate polymers JO - Carbohydr Polym VL - 102 N2 - The use of synthetic petroleum based packaging films caused serious environmental problems due to their difficulty in recycling and poor biodegradability. Therefore, present study was aimed to develop natural biopolymer-based antimicrobial packaging films as an alternative for the synthetic packaging films. As a natural antimicrobial agent, grapefruit seed extract (GSE) has been incorporated into agar to prepare antimicrobial packaging film. The films with different concentrations of GSE were prepared by a solvent casting method and the resulting composite films were examined physically and mechanically. In addition, the films were characterized by FE-SEM, XRD, FT-IR and TGA. The incorporation of GSE caused increase in color, UV barrier, moisture content, water solubility and water vapor permeability, while decrease in surface hydrophobicity, tensile strength and elastic modulus of the films. As the concentration of GSE increased from 0.6 to 13.3 μg/mL, the physical and mechanical properties of the films were affected significantly. The addition of GSE changed film microstructure of the film, but did not influence the crystallinity of agar and thermal stability of the agar-based films. The agar/GSE films exhibited distinctive antimicrobial activity against three test food pathogens, such as Listeria monocytogenes, Bacillus cereus and Escherichia coli. These results suggest that agar/GSE films have potential to be used in an active food packaging systems for maintaining food safety and extending the shelf-life of the packaged food. SN - 1879-1344 UR - https://www.unboundmedicine.com/medline/citation/24507339/Antimicrobial_and_physical_mechanical_properties_of_agar_based_films_incorporated_with_grapefruit_seed_extract_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0144-8617(13)01129-6 DB - PRIME DP - Unbound Medicine ER -