Chemical composition and antioxidant properties of <i>Laurus nobilis</i> L. and <i>Myrtus communis</i> L. essential oils from Morocco and evaluation of their antimicrobial activity acting alone or in combined processes for food preservation

Cherrat, Lamia; Espina, Laura; Bakkali, Mohammed; García-Gonzalo, Diego; Pagán, Rafael; Laglaoui, Amin

doi:10.1002/jsfa.6397

Cited by 121 publications

(74 citation statements)

References 36 publications

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“…These authors reached to similar results when combining mild heat with vanillin and citral (Char, Guerrero, & Alzamora, 2010). Cherrat et al (2014) have also tested the combined effects of Laurus nobilis and Myrtus communis essential oils with several physical treatments, including heat, and found synergistic effects in the combination of these essential oils and heat, reducing in an average of 3 times the heat resistance of both L. monocytogenes and E. coli O157:H7. Similar reductions in the thermal resistance of E. coli O157:H7 in orange juice were found by Espina et al (2014) when combining limonene or orange essential oil with heat.…”

Section: Resultsmentioning

confidence: 65%

When nanoemulsified, d-limonene reduces Listeria monocytogenes heat resistance about one hundred times

2016

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a b s t r a c tThe application of oily antimicrobials in form of nanoemulsion has been proved to solve the problem of their immiscibility in aqueous media, still preventing microbial growth and even improving the antimicrobial effect observed when applied directly. At present, only a few documented studies have evaluated the combined effect of nanoemulsions with other factors of stress for the microorganism. The present research shows very promising results on the combination of nanoemulsified D-limonene with thermal treatments on the inactivation of Listeria monocytogenes. The thermal resistance of L. monocytogenes was reduced two to five times when 0.5 mM D-limonene was added directly to the heating medium. However, when the same concentration of D-limonene was present in the heating medium in form of nanoemulsion, the heat resistance was reduced by one hundred times at all heating temperatures tested. The addition of nanoemulsified antimicrobials would allow to reduce greatly the intensity of the thermal treatments currently applied in the food processing industry.

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Section: Resultsmentioning

confidence: 65%

When nanoemulsified, d-limonene reduces Listeria monocytogenes heat resistance about one hundred times

2016

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“…In addition, essential oils are also known for their antibacterial, antifungal and antiviral properties [56][57][58]. Generally, essential oils consist of 20 to 60 components which are highly volatile but none of which are actually lipid in nature; they are thus not considered true oils.…”

Section: Essential Oilsmentioning

confidence: 99%

Untitled

2019

Org.Commun.

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Antibiotic resistance had first been reported not long after the discovery of the first antibiotic and has remained a major public health issue ever since. Challenges are constantly encountered during the mitigation process of antibiotic resistance in the clinical setting; especially with the emergence of the formidable superbug, a bacteria with multiple resistance towards different antibiotics; this resulted in the term multidrug resistant (MDR) bacteria. This rapid evolution of the resistance phenomenon has propelled researchers to continuously uncover new antimicrobial agents in a bid to hopefully, downplay the rate of evolution despite a drying pipeline. Recently, there has been a paradigm shift in the mining of potential antimicrobials; in the past, targets for drug discovery were from microorganisms and at current, the focus has moved onto plants, this is mainly due to the beneficial attributes that plants are able to confer over that of microorganisms. This review will briefly discuss antibiotic resistance mechanisms employed by resistant bacteria followed by a detailed expository regarding the use of secondary metabolites from plants as a potential solution to the MDR pathogen. Finally, future prospects recommending enhancements to the usage of plant secondary metabolites to directly target antibiotic resistant pathogens will be discussed.

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“…Essential oils or their components not only have antibacterial properties [22,23,25,32,33] but also have antiparasitic [34,35], antiviral [36,37], antifungal [38][39][40], and antioxidant properties [32,41,42].…”

Section: Miscellaneous Propertiesmentioning

confidence: 99%

β-Cyclodextrins as Encapsulating Agents of Essential Oils

Capelezzo¹,

Mohr²,

Dalcanton³

et al. 2018

Cyclodextrin - A Versatile Ingredient

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Many scientific studies have made advances in the ability to encapsulate natural extracts by cyclodextrins. These studies have addressed the physical and chemical conditions of the encapsulation reactions, employed several types of essential oils and characterized the microcapsules as to their ability to release encapsulated active principles. The essential oils studies with cyclodextrin encapsulation processes have been highly varied. However, the most studied are the essential oils with antimicrobial and antioxidant capacities. The essential antimicrobial and antioxidant oils are easily degraded. In the presence of oxygen, they are oxidized, and at low temperatures, they are volatilized and decomposed. Thus, cyclodextrins are coatings capable of protecting these essential oils from environmental conditions and agents capable of promoting oil degradation, in addition to controlling their release. In this chapter of the book, we review scientific papers that examine the encapsulation of antimicrobial essential oils and antioxidant essential oils with β-cyclodextrins.

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Chemical composition and antioxidant properties of Laurus nobilis L. and Myrtus communis L. essential oils from Morocco and evaluation of their antimicrobial activity acting alone or in combined processes for food preservation

Abstract: This study shows the great potential of these EOs in combined treatments with mild heat and high hydrostatic pressure to obtain a higher inactivation of foodborne pathogens, which might help in the design of safe processes applied at low intensity.

Cited by 121 publications

References 36 publications

When nanoemulsified, d-limonene reduces Listeria monocytogenes heat resistance about one hundred times

When nanoemulsified, d-limonene reduces Listeria monocytogenes heat resistance about one hundred times

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β-Cyclodextrins as Encapsulating Agents of Essential Oils

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