Extraction of essential oil from Dracocephalum kotschyi Boiss. (Lamiaceae), identification of two active compounds and evaluation of the antimicrobial properties

Ghavam, Mansureh; Manconi, Maria; Manca, Maria Letizia; Bacchetta, Gianluigi

doi:10.1016/j.jep.2020.113513

Cited by 40 publications

(20 citation statements)

References 47 publications

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“…Although α-pinene is present in lower amount in rose essential oils, it may be one of the contributing factors for its antifungal activity as already reported by Dorman and Deans 41 . In general, the synergistic effects of the different components of the essential oil on their biological and antimicrobial activity should be considered 42 – 44 . Predisposing factors such as widespread and prolonged use of antibiotics, corticosteroids, immunosuppressive drugs and underlying diseases such as diabetes, leprosy, and malignancies have caused the increase of fungal diseases, especially candidiasis, in the past.…”

Section: Resultsmentioning

confidence: 99%

Chemotype of damask rose with oleic acid (9 octadecenoic acid) and its antimicrobial effectiveness

Ghavam

Afzali

Manca

2021

Sci Rep

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Essential oils are natural products that have great antimicrobial potential value against many fungi and bacteria. Rosa damascena Mill. is one of the most important aromatic species of the Rosaceae family from which essential oil and economically valuable products can be obtained. The present study was designed to investigate the major compositions of the essential oil of this plant in Isfahan region of Iran and to identify its antibacterial and antifungal effects against 11 microorganisms causing human diseases and food spoilage. The essential oil was extracted by using the Clevenger apparatus and was analyzed by gas chromatography-mass spectrometry (GC–MS) technique. Its antimicrobial activity was evaluated by well diffusion, minimum inhibitory concentration (MIC) and minimum bactericide concentration (MBC). The results showed that the most important compounds of the essential oil were nonadecane (24.72%), heneicosane (19.325%), oleic acid (17.63%), and citronellol (12.61%). The results also showed that the highest inhibition zone of rose essential oil was against Aspergillus brasiliensis (15.00 ± 0.00 mm) and had a significant effect on Klebsiella pneumoniae (~ 8.00 mm). Also the rose oil had a significant inhibition and lethal effect against Candida albicans (MIC and MBC ~ 125 μg/mL), which is equivalent to the nystatin antibiotic (~ 125 μg/mL). Therefore, the essential oil of Damask rose can be considered as an alternative natural product for the prevention and treatment of fungal diseases in humans and against food spoilage as well.

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Section: Resultsmentioning

confidence: 99%

Chemotype of damask rose with oleic acid (9 octadecenoic acid) and its antimicrobial effectiveness

Ghavam

Afzali

Manca

2021

Sci Rep

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“…The highest antimicrobial activity of R. × damascena essential oil, irrespective of the area of collection, was against Aspergillus brasiliensis. The different antimicrobial activity obtained by testing the R. × damascena essential oils obtained from different areas of Iran may be connected with their different chemical composition and their complex chemical profiles [20,21]. Citronellol, geraniol, neral and transrose oxide appear to be important contributors to the antimicrobial activity of the essential oils [38,53,59].…”

Section: Discussionmentioning

confidence: 99%

Variability in chemical composition and antimicrobial activity of essential oil of Rosa × damascena Herrm. from mountainous regions of Iran

Ghavam

Afzali

Manconi

et al. 2021

Chem. Biol. Technol. Agric.

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Background Essential oil of Rosa × damascena Herrm. is one of the most valuable and important raw materials for the flavor and fragrance industry. The cultivation of this plant has ancient origins, and Kashan was one of the first mountainous regions of Iran dealing with the cultivation of R. × damascena. In this study, both chemical composition and antimicrobial activity of different rose essential oils obtained from five mountainous areas of Kashan region (Maragh, Qamsar, Sadeh, Javinan, and Kamoo) has been investigated along with the influence of the environmental conditions on these properties. Results Results showed that yield and chemical composition of essential oils obtained from Rosa × damascena were significantly affected by the collection area. In particular, the yield of oils varied from ~0.08 to ~0.132% and citronellol (36.70-9.18%), geraniol (12.82-0.47%), nonadecane (22.73-10.36%), heneicosane (31.7-11.43%), and 1-nonadecene (6.03-3.93%) have been detected as main compounds in all the plants collected, but at different concentrations depending on the collection area. The best fragrance and the highest yield were found in the oil from Kamoo area. Similarly to the chemical composition, the antimicrobial activity of the essential oils was affected by their origin, and essential oil obtained from plants collected from Kamoo area disclosed the highest antibacterial and antifungal efficacy. Its inhibition halos were 17.33±0.58 mm against Aspergillus brasiliensis, 15.67±0.58 mm against Staphylococcus aureus, and 12.33±0. 58 mm against Streptococcus pyogenes. Essential oils of R. damascena were also effective against Gram-negative Pseudomonas aeruginosa and they had a MIC value of 62.50 μg/mL irrespective of the collection area (except the oil from Javinan area). On the contrary, the highest antifungal power against Candida albicans yeast was reached using the essential oil obtained from plants collected in Javinan region (MIC and MBC ~62.50 μg/mL). Conclusions Overall results underline the influence of environmental conditions of the different areas of Kashan region, on the chemical composition of and antimicrobial activity of the essential oils of Rosa × damascena. In addition, results disclosed that Kamoo seemed to be the most suitable area for the competitive cultivation of R. × damascena to the intensive production of aromatic flower oil and natural antimicrobial essential oils.

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“…Pseudomonas and Shewanella are gram-negative psychrotrophic bacteria decaying fish in refrigeration and are considered to be the main spoilage bacteria [ 41 , 42 , 43 ]. The main components of LVEO are citral (31.79%), neral (23.75%), geraniol (22.01%), and D-limonene (10.36%), inhibiting the production of the essential enzymes and causing damage to the bacterial cell walls [ 44 , 45 ]. However, Pseudomonas and Shewanella have high resistance to LVEO due to the presence of lipopolysaccharide in their outer membrane, which led to LVEO failing to penetrate the outer membrane.…”

Section: Resultsmentioning

confidence: 99%

Effect of Active Coatings Containing Lippa citriodora Kunth. Essential Oil on Bacterial Diversity and Myofibrillar Proteins Degradation in Refrigerated Large Yellow Croaker

Wang

Gao

et al. 2021

Polymers

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The research evaluated the effects of locust bean gum (LBG) and sodium alginate (SA) active coatings containing 0.15, 0.30 or 0.60% lemon verbena (Lippa citriodora Kunth.) essential oil (LVEO) on the bacterial diversity and myofibrillar proteins (MPs) of large yellow croaker during refrigerated storage at 4 °C for 18 days. Variability in the dominant bacterial community in different samples on the 0, 9th and 18th day was observed. Pseudomonas and Shewanella were the two major genera identified during refrigerated storage. At the beginning, the richness of Pseudomonas was about 37.31% and increased for control (CK) samples during refrigerated storage, however, the LVEO-treated samples increased sharply from day 0 to the 9th day and then decreased. LBG-SA coatings containing LVEO treatments significantly delayed MPs oxidation by retarding the formation of free carbonyl compounds and maintaining higher sulfhydryl content, higher Ca2+-ATPase activity, better organized secondary (higher contents of α-helix and β-sheet) and tertiary structures during refrigerated storage. The transmission electron microscope (TEM) images showed that the integrity of the sarcomere was damaged; the boundaries of the H-, A-, and I-bands, Z-disk, and M-line were fuzzy in the CK samples at the end of storage. However, the LVEO-treated samples were still regular in appearance with distinct dark A-bands, light I-bands, and Z-disk. In brief, LBG-SA active coatings containing LVEO treatments suggested a feasible method for protecting the MPs of large yellow croaker during refrigerated storage.

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Extraction of essential oil from Dracocephalum kotschyi Boiss. (Lamiaceae), identification of two active compounds and evaluation of the antimicrobial properties

Cited by 40 publications

References 47 publications

Chemotype of damask rose with oleic acid (9 octadecenoic acid) and its antimicrobial effectiveness

Chemotype of damask rose with oleic acid (9 octadecenoic acid) and its antimicrobial effectiveness

Variability in chemical composition and antimicrobial activity of essential oil of Rosa × damascena Herrm. from mountainous regions of Iran

Effect of Active Coatings Containing Lippa citriodora Kunth. Essential Oil on Bacterial Diversity and Myofibrillar Proteins Degradation in Refrigerated Large Yellow Croaker

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