Effect of harvest year on production, chemical composition and antioxidant activities of essential oil of oregano (Origanum vulgare subsp glandulosum (Desf.) Ietswaart) growing in North Africa

Mechergui, Kaouther; Jaouadi, Wahbi; Coelho, José Augusto Paixão; Khouja, Mohamed Larbi

doi:10.1016/j.indcrop.2016.06.011

Cited by 62 publications

(43 citation statements)

References 23 publications

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“…), and the characteristic chemical profile differs from 1 year to another due to the rainfall and the temperature (Mechergui et al . ).…”

Section: Discussionmentioning

confidence: 97%

“…Pesavento et al (2015) identified in oregano EO, 77Á2% oxygenated monoterpenes, principally represented by Carv (71Á8%). The differences noted in oregano EO composition, suggest that extrinsic and intrinsic genetic factors play a role in determining the oil composition (Bisht et al 2009), and the characteristic chemical profile differs from 1 year to another due to the rainfall and the temperature (Mechergui et al 2016).…”

Section: Discussionmentioning

confidence: 99%

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Antibiotic‐resistantStaphylococcus aureusstrains of swine origin: molecular typing and susceptibility to oregano (Origanum vulgareL.) essential oil and maqui (Aristotelia chilensis(Molina) Stuntz) extract

et al. 2019

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Aim The molecular typing and the susceptibility of Staphylococcus aureus strains of swine origin to antibiotics, oregano (Origanum vulgare L.) essential oil (EO) and Chilean blackberry maqui (Aristotelia chilensis (Molina) Stuntz) extract were determined. Methods and Results Twenty S. aureus strains of swine origin were subjected to molecular typing, of which six strains were selected for antimicrobial susceptibility testing. The epsilon test (Etest) was used to determine the antibiotic susceptibility. The susceptibility to natural antimicrobials (NAs): oregano EO, maqui extract, thymol (Thy) and carvacrol (Carv), was carried out using the disk diffusion method. The S. aureus strains were genetically diverse. All strains were resistant to at least one class of antibiotic, and two strains were multidrug‐resistant. The minimum inhibitory concentration of oregano EO, Thy and Carv was 0·01–0·04%. Maqui extract did not show antistaphylococcal activity. Conclusions Natural antimicrobials extracted from oregano have an inhibitory activity against S. aureus strains from swine origin, with no effect using maqui extract. Significance and Impact of the Study This study provides information about the characteristics of S. aureus strains of swine origin, and about the potential use of NAs from oregano to enhance the control of antibiotic‐resistant S. aureus strains in the pork supply chain.

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“…), and the characteristic chemical profile differs from 1 year to another due to the rainfall and the temperature (Mechergui et al . ).…”

Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

Antibiotic‐resistantStaphylococcus aureusstrains of swine origin: molecular typing and susceptibility to oregano (Origanum vulgareL.) essential oil and maqui (Aristotelia chilensis(Molina) Stuntz) extract

et al. 2019

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“…Moreover the essential oil of Origanum vulgare ssp. glandulosum from North Africa showed a characteristic and different chemical profile from year to another . Also quantity and quality of L. angustifolia EO is positively regulated by temperature and flowering stage development while it was negatively affected by rainfall during flowering period because the remarkable decline of linalool production .…”

Section: Essential Oils: Very Old ‘Guys’ With Great Prospectsmentioning

confidence: 99%

“…glandulosum from North Africa showed a characteristic and different chemical profile from year to another. [156] Also quantity and [140]…”

Section: Crops Management and Agronomic Techniquesmentioning

confidence: 99%

New Tricks for Old Guys: Recent Developments in the Chemistry, Biochemistry, Applications and Exploitation of Selected Species from the Lamiaceae Family

Napoli

Siracusa

Ruberto

2020

Chemistry & Biodiversity

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Lamiaceae is one of the largest families of flowering plants comprising about 250 genera and over 7,000 species. Most of the plants of this family are aromatic and therefore important source of essential oils. Lamiaceae are widely used as culinary herbs and reported as medicinal plants in several folk traditions. In the Mediterranean area oregano, sage, rosemary, thyme and lavender stand out for geographical diffusion and variety of uses. The aim of this review is to provide recent data dealing with the phytochemical and pharmacological studies, and the more recent applications of the essential oils and the non‐volatile phytocomplexes. This literature survey suggests how the deeper understanding of biomolecular processes in the health and food sectors as per as pest control bioremediation of cultural heritage, or interaction with human microbiome, fields, leads to the rediscovery and new potential applications of well‐known plants.

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“…Among them, oregano essential oil (OEO) is one of the most important and it is widely used in the pharmaceutical, food, and cosmetics industries [12]. It comes from the genus Origanum that belongs to the Lamiaceae family [13], which is constituted by more than 38 monoterpenoids [14]. Their main active compounds are carvacrol, thymol, p-cymene, and γ-terpinene, which are responsible for its high antimicrobial and antioxidant activities [15,16].…”

mentioning

confidence: 99%

Electrospun Active Biopapers of Food Waste Derived Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) with Short-Term and Long-Term Antimicrobial Performance

et al. 2020

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This research reports about the development by electrospinning of fiber-based films made of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) derived from fermented fruit waste, so-called bio-papers, with enhanced antimicrobial performance. To this end, different combinations of oregano essential oil (OEO) and zinc oxide nanoparticles (ZnONPs) were added to PHBV solutions and electrospun into mats that were, thereafter, converted into homogeneous and continuous films of 130 µm. The morphology, optical, thermal, mechanical properties, crystallinity, and migration into food simulants of the resultant PHBV-based bio-papers were evaluated and their antimicrobial properties were assessed against Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli) in both open and closed systems. It was observed that the antimicrobial activity decreased after 15 days due to the release of the volatile compounds, whereas the bio-papers filled with ZnONPs showed high antimicrobial activity for up to 48 days. The electrospun PHBV biopapers containing 2.5 wt% OEO + 2.25 wt% ZnONPs successfully provided the most optimal activity for short and long periods against both bacteria. Nanomaterials 2020, 10, 506 2 of 26 studied, including the poly(3-hydroxybutyrate) (PHB or P3HB) homopolyester and its copolymer poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV). The latter shows lower crystallinity and melting point as well as greater flexibility, which broadens its industrial applicability [4,5]. In order to confer active properties to PHAs, several substances can be incorporated into the biopolymers such as essential oils (EOs) and inorganic or metal nanoparticles (MNPs) [6,7].EOs are the product of the secondary metabolism of plants, separated from the aqueous phase, which is formed by various volatile components such as terpenes, alcohols, acids, esters, epoxies, aldehydes, ketones, amines, and sulphides, among others [8]. This wide range of compounds are responsible for the strong biological activity and also the antioxidant, antimicrobial, antifungal, and antiviral properties of plants [9]. In addition, EOs are biologically safe and have a low risk of causing resistance in pathogens [10]. In addition, they are classified as Generally Recognized as Safe (GRAS) by the U.S. Food and Drug Administration (FDA) [11]. Among them, oregano essential oil (OEO) is one of the most important and it is widely used in the pharmaceutical, food, and cosmetics industries [12]. It comes from the genus Origanum that belongs to the Lamiaceae family [13], which is constituted by more than 38 monoterpenoids [14]. Their main active compounds are carvacrol, thymol, p-cymene, and γ-terpinene, which are responsible for its high antimicrobial and antioxidant activities [15,16]. These active compounds have been particularly related to the inhibition of G− bacteria such as Escherichia coli (E. coli), Pseudomonas aeruginosa (P. aeruginosa), and Salmonella typhimurium (S. typhimurium) and G+ bacteria including Staphylococcus aureus (S. aureus), Listeria mo...

show abstract

Effect of harvest year on production, chemical composition and antioxidant activities of essential oil of oregano (Origanum vulgare subsp glandulosum (Desf.) Ietswaart) growing in North Africa

Cited by 62 publications

References 23 publications

Antibiotic‐resistantStaphylococcus aureusstrains of swine origin: molecular typing and susceptibility to oregano (Origanum vulgareL.) essential oil and maqui (Aristotelia chilensis(Molina) Stuntz) extract

Antibiotic‐resistantStaphylococcus aureusstrains of swine origin: molecular typing and susceptibility to oregano (Origanum vulgareL.) essential oil and maqui (Aristotelia chilensis(Molina) Stuntz) extract

New Tricks for Old Guys: Recent Developments in the Chemistry, Biochemistry, Applications and Exploitation of Selected Species from the Lamiaceae Family

Electrospun Active Biopapers of Food Waste Derived Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) with Short-Term and Long-Term Antimicrobial Performance

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