• 1 Food Science and Technology Department, Faculty of Agriculture, University of Jiroft, Jiroft 7867155311, Iran
  • 2 Faculty of Basic Sciences, Jiroft Branch, Islamic Azad University, Jirof 5716963896, Iran
  • 3 Department of Pharmacy, Abdul Wali Khan University Mardan, Mardan 23200, Pakistan
  • 4 Faculty of Plant Production, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan 4918943464, Iran
  • 5 Department of Agronomy and Plant Breeding, Agriculture Institute, Research Institute of Zabol, Zabol 9861335856, Iran
  • 6 School of Pharmacy, Monash University Malaysia, Bandar Sunway 47500, Malaysia
  • 7 Faculty of Data Science and Information Technology, INTI International University, Nilai 71800, Malaysia
  • 8 School of Pharmacy, KPJ Healthcare University College, Nilai 71800, Malaysia
Molecules, 2023 Jun 05;28(11).
PMID: 37299028 DOI: 10.3390/molecules28114554


Mentha longifolia is a valuable medicinal and aromatic plant that belongs to Lamiaceae family. This study looked at the antibacterial effects of M. longifolia essential oil and pulegone in edible coatings made of chitosan and alginate on the growth of Staphylococcus aureus, Listeria monocytogenes, and Escherichia coli in cheese. For this purpose, first fresh mint plant was collected from the cold region of Jiroft in Kerman province. Plant samples were dried in the shade at ambient temperature, and essential oil was prepared using Clevenger. The essential oil was analyzed by gas chromatography using mass spectrometric (GC/MS) detection. The major composition of M. longifolia oil was pulegone (26.07%), piperitone oxide (19.72%), and piperitone (11.88%). The results showed that adding M. longifolia essential oils and pulegone to edible coatings significantly reduced the growth of bacteria during storage. The bacterial population decreased by increasing the concentration of chitosan, M. longifolia, and pulegone in edible coatings. When the effects of pulegone and M. longifolia essential oils on bacteria were compared, it was found that pulegone had a stronger effect on bacterial population reduction. Coating treatments showed more antibacterial activity on E. coli than other bacteria. In general, the results of this research showed that alginate and chitosan coatings along with M. longifolia essential oil and its active ingredient pulegone had antibacterial effects against S. aureus, L. monocytogenes, and E. coli in cheese.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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