STUDY OF EFFECT OF OREGANO ESSENTIAL OIL AND ETHANOLIC EXTRACT OF PROPOLIS ON ANTIBACTERIAL PROPERTIES AND SOME PHYSICAL CHARACTERISTICS OF BIODEGRADABLE POLY-LACTIC ACID FILMS

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MISAGHI A.; SAEEDI M.; NOORI N.; REZAEIGOLESTANI M.R.

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Journal: IRANIAN JOURNAL OF HEALTH AND ENVIRONMENT Year:2018 | Volume:11 | Issue:1 Page(s): 111-122

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Title

STUDY OF EFFECT OF OREGANO ESSENTIAL OIL AND ETHANOLIC EXTRACT OF PROPOLIS ON ANTIBACTERIAL PROPERTIES AND SOME PHYSICAL CHARACTERISTICS OF BIODEGRADABLE POLY-LACTIC ACID FILMS

Author(s)

MISAGHI A. | SAEEDI M. | NOORI N. | REZAEIGOLESTANI M.R. | Issue Writer Certificate

Keywords

OREGANO ESSENTIAL OILQ1

FOOD PACKAGINGQ1

POLY LACTIC ACIDQ1

PROPOLISQ1

FOODBORNE PATHOGENSQ1

Abstract

Background and Objective: Natural antimicrobial compounds have a valuable capacity to be used in a variety of foods to inhibit growth of FOODBORNE PATHOGENS and spoilage bacteria. The aims of this study were to produce active biodegradable films by incorporation of different percentage of OREGANO ESSENTIAL OIL (OEO) and ethanolic extract of PROPOLIS (EEP) into poly-lactic acid (PLA) films, and to evaluate physical and antimicrobial properties of the resulting films.Materials and Methods: The active films were produced by solvent casting method, and their thickness and major color parameters were measured using a digital micrometer and a colorimeter instrument, respectively. Afterwards, antibacterial effects of the films were assessed against four common FOODBORNE PATHOGENS, includingStaphylococcus aureus, Escherichia coli, Vibrio parahaemolyticusand Listeria monocytogenes, by means of disk diffusion test.Results: Physical examinations showed that thickness of resultant films significantly was increased (p<0.05) by addition of different concentrations of active agents. Additionally, the presence of them in the structure of films decreased the lightness and increased the redness and yellowness, simultaneously. While none of the neat PLA film or films with just EEP had no antibacterial effect, all films containing higher percentages of OEO (5 and 10%) were effective against all four tested bacterial strains, and these effects were more significant in case of the gram-positive bacteria. The maximum inhibition zone was recorded for the film containing 10% of OEO and 2% of EEP, which the relevant values were 56.66, 45.46, 17.91 and 17.65 mm for Staphylococcus aureus, Listeria monocytogenes, Vibrio parahaemolyticusand Escherichia coli, respectively.Conclusion: Based on the findings of this study, the presence of just EEP in the initial formulation of poly-lactic acid films was not effective against the four tested FOODBORNE PATHOGENS, while the addition of this compound to the films containing OEO increased the effective antibacterial properties of the resulting films. As a result, the simultaneous use of these two compounds in the structure of hydrophobic films, such as poly-lactic acid film, can be used to produce active FOOD PACKAGING films.

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APA: Copy

MISAGHI, A., SAEEDI, M., NOORI, N., & REZAEIGOLESTANI, M.R.. (2018). STUDY OF EFFECT OF OREGANO ESSENTIAL OIL AND ETHANOLIC EXTRACT OF PROPOLIS ON ANTIBACTERIAL PROPERTIES AND SOME PHYSICAL CHARACTERISTICS OF BIODEGRADABLE POLY-LACTIC ACID FILMS. IRANIAN JOURNAL OF HEALTH AND ENVIRONMENT, 11(1 ), 111-122. SID. https://sid.ir/paper/146138/en

Vancouver: Copy

MISAGHI A., SAEEDI M., NOORI N., REZAEIGOLESTANI M.R.. STUDY OF EFFECT OF OREGANO ESSENTIAL OIL AND ETHANOLIC EXTRACT OF PROPOLIS ON ANTIBACTERIAL PROPERTIES AND SOME PHYSICAL CHARACTERISTICS OF BIODEGRADABLE POLY-LACTIC ACID FILMS. IRANIAN JOURNAL OF HEALTH AND ENVIRONMENT[Internet]. 2018;11(1 ):111-122. Available from: https://sid.ir/paper/146138/en

IEEE: Copy

A. MISAGHI, M. SAEEDI, N. NOORI, and M.R. REZAEIGOLESTANI, “STUDY OF EFFECT OF OREGANO ESSENTIAL OIL AND ETHANOLIC EXTRACT OF PROPOLIS ON ANTIBACTERIAL PROPERTIES AND SOME PHYSICAL CHARACTERISTICS OF BIODEGRADABLE POLY-LACTIC ACID FILMS,” IRANIAN JOURNAL OF HEALTH AND ENVIRONMENT, vol. 11, no. 1 , pp. 111–122, 2018, [Online]. Available: https://sid.ir/paper/146138/en

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