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<p>The antifungal activity screening of ten essential oils (EOs) against <i>Rhizopus</i> sp. and <i>Aspergillus</i> sp. was carried out. Among all EOs, <i>Thymus satureioides</i>, <i>Cinnamomum zeylanicum</i>, and <i>Eugenia caryophyllus</i> EOs exhibited the strongest antifungal activity. The double and triple combinations of these EOs showed synergism, especially when the three EOs are combined at 1:3 ratios (MFC = 0.125 µL/mL for <i>Rhizopus</i> sp. and MFC = 0.062 µL/mL for <i>Aspergillus</i> sp.). At 0.001 µL/mL concentration, the triple combination of these EOs inhibited the development of <i>Rhizopus</i> sp. and <i>Aspergillus</i> sp. biofilms by more than 87%. Furthermore, the incorporation of this EOs combination into chitosan-based film (CS-film) reduced significantly its moisture and swelling levels, water vapor transmission rate, water solubility, and hydrophobicity while increasing considerably its opacity, thickness, tensile strength, and antiadhesion activity. Ultimately, the application of CS-EOs formulation as a coating for strawberries mitigated the weight loss by fourfold and inhibited mold development at the 13th day of storage. These encouraging results support the conclusion that the utilized EOs mixture can be applied as a natural antifungal or incorporated into CS-film to form a bioactive and biodegradable packaging and coating intended for food preservation.</p>

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Development of Bioactive Formulation Based on Crustacean Chitosan and Thymus satureioides, Cinnamomum zeylanicum, and Eugenia Caryophyllus Essential Oils for Food Preservation

  • 期刊论文

  • 发表日期：

    2025年5月31日

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  • Anouar Mouhoub,
  • Amine Guendouz,
  • Zainab El Alaoui-Talibi,
  • Saad Ibnsouda Koraichi,
  • Cherkaoui El Modafar

摘要

The antifungal activity screening of ten essential oils (EOs) against Rhizopus sp. and Aspergillus sp. was carried out. Among all EOs, Thymus satureioides, Cinnamomum zeylanicum, and Eugenia caryophyllus EOs exhibited the strongest antifungal activity. The double and triple combinations of these EOs showed synergism, especially when the three EOs are combined at 1:3 ratios (MFC = 0.125 µL/mL for Rhizopus sp. and MFC = 0.062 µL/mL for Aspergillus sp.). At 0.001 µL/mL concentration, the triple combination of these EOs inhibited the development of Rhizopus sp. and Aspergillus sp. biofilms by more than 87%. Furthermore, the incorporation of this EOs combination into chitosan-based film (CS-film) reduced significantly its moisture and swelling levels, water vapor transmission rate, water solubility, and hydrophobicity while increasing considerably its opacity, thickness, tensile strength, and antiadhesion activity. Ultimately, the application of CS-EOs formulation as a coating for strawberries mitigated the weight loss by fourfold and inhibited mold development at the 13th day of storage. These encouraging results support the conclusion that the utilized EOs mixture can be applied as a natural antifungal or incorporated into CS-film to form a bioactive and biodegradable packaging and coating intended for food preservation.