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Physical, mechanical and barrier properties of corn starch films incorporated with plant essential oils.
Carbohydr Polym. 2013 Oct 15; 98(1):1117-26.CP

Abstract

Corn starch-based films are inherently brittle and lack the necessary mechanical integrity for conventional packaging. However, the incorporation of additives can potentially improve the mechanical properties and processability of starch films. In this work two essential oils, Zataria multiflora Boiss (ZEO) or Mentha pulegium (MEO) at three levels (1%, 2% and 3% (v/v)), were incorporated into starch films using a solution casting method to improve the mechanical and water vapor permeability (WVP) properties and to impart antimicrobial activity. Increasing the content of ZEO or MEO from 2% to 3% (v/v) increased values for elongation at break from 94.38% to 162.45% and from 53.34% to 107.71% respectively, but did not significantly change tensile strength values of the films. The WVP properties of the films decreased from 7.79 to 3.37 or 3.19 g mm m(-2) d(-1) kPa(-1) after 3% (v/v) ZEO or MEO incorporation respectively. The oxygen barrier properties were unaffected at the 1% and 2% (v/v) oil concentration used but oxygen transmission increased with 3% (v/v) for both formulations. The films' color became slightly yellow as the levels of ZEO or MEO were increased although transparency was maintained. Both films demonstrated antimicrobial activity with films containing ZEO more effective against Escherichia coli and Staphylococcus aureus than those containing MEO. These results suggest that ZEO and MEO have the potential to be directly incorporated into corn starch to prepare antimicrobial biodegradable films for various food packaging applications.

Authors+Show Affiliations

School of Packaging, Michigan State University, East Lansing, MI 48824, USA. ghasemlo@msu.eduNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

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

Language

eng

PubMed ID

23987453

Citation

Ghasemlou, Mehran, et al. "Physical, Mechanical and Barrier Properties of Corn Starch Films Incorporated With Plant Essential Oils." Carbohydrate Polymers, vol. 98, no. 1, 2013, pp. 1117-26.
Ghasemlou M, Aliheidari N, Fahmi R, et al. Physical, mechanical and barrier properties of corn starch films incorporated with plant essential oils. Carbohydr Polym. 2013;98(1):1117-26.
Ghasemlou, M., Aliheidari, N., Fahmi, R., Shojaee-Aliabadi, S., Keshavarz, B., Cran, M. J., & Khaksar, R. (2013). Physical, mechanical and barrier properties of corn starch films incorporated with plant essential oils. Carbohydrate Polymers, 98(1), 1117-26. https://doi.org/10.1016/j.carbpol.2013.07.026
Ghasemlou M, et al. Physical, Mechanical and Barrier Properties of Corn Starch Films Incorporated With Plant Essential Oils. Carbohydr Polym. 2013 Oct 15;98(1):1117-26. PubMed PMID: 23987453.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Physical, mechanical and barrier properties of corn starch films incorporated with plant essential oils. AU - Ghasemlou,Mehran, AU - Aliheidari,Nahal, AU - Fahmi,Ronak, AU - Shojaee-Aliabadi,Saeedeh, AU - Keshavarz,Behnam, AU - Cran,Marlene J, AU - Khaksar,Ramin, Y1 - 2013/07/18/ PY - 2013/04/16/received PY - 2013/07/10/revised PY - 2013/07/10/accepted PY - 2013/8/31/entrez PY - 2013/8/31/pubmed PY - 2014/3/29/medline KW - Antimicrobial properties KW - Atomic-force microscopy KW - Corn starch KW - Essential oil KW - Physical properties SP - 1117 EP - 26 JF - Carbohydrate polymers JO - Carbohydr Polym VL - 98 IS - 1 N2 - Corn starch-based films are inherently brittle and lack the necessary mechanical integrity for conventional packaging. However, the incorporation of additives can potentially improve the mechanical properties and processability of starch films. In this work two essential oils, Zataria multiflora Boiss (ZEO) or Mentha pulegium (MEO) at three levels (1%, 2% and 3% (v/v)), were incorporated into starch films using a solution casting method to improve the mechanical and water vapor permeability (WVP) properties and to impart antimicrobial activity. Increasing the content of ZEO or MEO from 2% to 3% (v/v) increased values for elongation at break from 94.38% to 162.45% and from 53.34% to 107.71% respectively, but did not significantly change tensile strength values of the films. The WVP properties of the films decreased from 7.79 to 3.37 or 3.19 g mm m(-2) d(-1) kPa(-1) after 3% (v/v) ZEO or MEO incorporation respectively. The oxygen barrier properties were unaffected at the 1% and 2% (v/v) oil concentration used but oxygen transmission increased with 3% (v/v) for both formulations. The films' color became slightly yellow as the levels of ZEO or MEO were increased although transparency was maintained. Both films demonstrated antimicrobial activity with films containing ZEO more effective against Escherichia coli and Staphylococcus aureus than those containing MEO. These results suggest that ZEO and MEO have the potential to be directly incorporated into corn starch to prepare antimicrobial biodegradable films for various food packaging applications. SN - 1879-1344 UR - https://www.unboundmedicine.com/medline/citation/23987453/Physical_mechanical_and_barrier_properties_of_corn_starch_films_incorporated_with_plant_essential_oils_ DB - PRIME DP - Unbound Medicine ER -