Chemical Composition and Phytotoxic Activity of <i>Rosmarinus officinalis</i> Essential Oil

Caputo, Lucia; Trotta, Mariarosa; Angelica, Romaniello; Feo, Vincenzo De

doi:10.1177/1934578x1801301033

Cited by 8 publications

(7 citation statements)

References 24 publications

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“…E. gunnii EO showed no phytotoxic activity on the tested seed (data not shown). Its principal component, 1,8 cineole, was inactive against several of the tested seeds, as shown in our previous studies (Caputo et al, 2018).…”

Section: Phytotoxic Activitysupporting

confidence: 84%

Chemical Composition and Biological Activities of the Essential Oils of Leptospermum petersonii and Eucalyptus gunnii

et al. 2020

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The aim of this study was to characterize the chemical composition and to evaluate the antimicrobial and phytotoxic properties of the essential oils (EOs) obtained from leaves of Leptospermum petersonii chemotype "Variety B" and Eucalyptus gunnii, native to Australia. Geranyl acetate, γ-terpinene, geraniol, terpinolene, α-pinene, p-cimene, and linalool were the main components in L. petersonii EO, confirming also the existence of several chemotypes in such taxa; on the other hand, 1,8-cineole, trans-sabinene hydrate acetate, globulol, longicyclene, terpinolene, and camphene were present in major amounts in the E. gunnii EO. Chemical analysis of L. petersonii revealed that it belongs to the variety "B." E. gunnii EO showed good antibacterial activity, with an MIC of 0.5 and 2 µg/mL against Staphylococcus aureus, and Pectobacterium carotovorum, respectively. The activity of E. gunnii EO was stronger than L. petersonii EO, whose maximum MIC reached 5 µg/mL. E. gunnii and L. petersonii EOs were particularly effective in inhibiting the biofilm formation by S. aureus, already at a concentration of 0.01 µg/mL. The other strains were resistant to both EOs up to a dose of 0.05 µg/mL. The maximum inhibition on biofilm formed by P. carotovorum was recorded for E. gunnii EO, reaching a value of 93.12% at 1.0 µg/mL. This is the first manuscript which studies the biofilm inhibition by EOs and evaluates their effects on biofilm metabolism. Both EOs were more effective against P. carotovorum. In addition, even though L. petersonii EO 0.1 µg/mL was unable to inhibit biofilm formation by Escherichia coli, it decreased the metabolic activity of the biofilm to 78.55% compared to control; furthermore, despite it inducing a relatively low inhibition (66.67%) on biofilm formation, it markedly affected metabolic activity, which decreased to 16.09% with respect to the control. On the contrary, L. petersonii EO 0.5 µg/mL induced a 79.88% inhibition of S. aureus

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Section: Phytotoxic Activitysupporting

confidence: 84%

Chemical Composition and Biological Activities of the Essential Oils of Leptospermum petersonii and Eucalyptus gunnii

et al. 2020

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“…According to Shao et al, [ 65 ], the 1,8-cineole compound obtained lower results for the inhibition of the root growth of Amaranthus retroflexus and Poa annua , when compared to the other two major constituents of the Seriphidium terrae-albae essential oil (α-thujone and β-thujone). Other authors also demonstrate the phytotoxic potential of 1,8-cineole on different species of receptor plants [ 66 , 67 , 68 ]; in addition, compounds such as δ-cadinene and ( E )-Caryophyllene have also shown phytotoxic potential on several plant species; in addition, other compounds such as δ-cadinene and ( E )-Caryophyllene have also shown phytotoxic potential on several plant species such as Mimosa pudica , Senna obtusifolia , Sinapis arvensis , Trifolium campestre , and Phalaris canariensis weeds [ 58 , 69 ], results similar to those of other authors [ 63 , 70 ]. Jaradat [ 71 ] points out that the Teucrium polium L. essential oil has α-cadinol as the component with the highest content (46.80%).…”

Section: Resultsmentioning

confidence: 96%

Phytochemical Profile and Herbicidal (Phytotoxic), Antioxidants Potential of Essential Oils from Calycolpus goetheanus (Myrtaceae) Specimens, and in Silico Study

et al. 2022

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The essential oil (EO) of Calycolpus goetheanus (Myrtaceae) specimens (A, B, and C) were obtained through hydrodistillation. The analysis of the chemical composition of the EOs was by gas chromatography coupled with mass spectrometry CG-MS, and gas chromatography coupled with a flame ionization detector CG-FID. The phytotoxic activity of those EOs was evaluated against two weed species from common pasture areas in the Amazon region: Mimosa pudica L. and Senna obtusifolia (L.) The antioxidant capacity of the EOs was determined by (DPPH•) and (ABTS•+). Using molecular docking, we evaluated the interaction mode of the major EO compounds with the molecular binding protein 4-hydroxyphenylpyruvate dioxygenase (HPPD). The EO of specimen A was characterized by β-eudesmol (22.83%), (E)-caryophyllene (14.61%), and γ-eudesmol (13.87%), while compounds 1,8-cineole (8.64%), (E)-caryophyllene (5.86%), δ-cadinene (5.78%), and palustrol (4.97%) characterize the chemical profile of specimen B’s EOs, and specimen C had α-cadinol (9.03%), δ-cadinene (8.01%), and (E)-caryophyllene (6.74%) as the majority. The phytotoxic potential of the EOs was observed in the receptor species M. pudica with percentages of inhibition of 30%, and 33.33% for specimens B and C, respectively. The EOs’ antioxidant in DPPH• was 0.79 ± 0.08 and 0.83 ± 0.02 mM for specimens A and B, respectively. In the TEAC, was 0.07 ± 0.02 mM for specimen A and 0.12 ± 0.06 mM for specimen B. In the results of the in silico study, we observed that the van der Waals and hydrophobic interactions of the alkyl and pi-alkyl types were the main interactions responsible for the formation of the receptor–ligand complex.

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“…The highest values for the isoborneol content were obtained in the mid-and post-flowering stage. Isoborneol content in the previous studies was found different, such as 3.48 % (Martínez et al, 2009), 0.20% (Hussain et al, 2010), 5.68% (Asressu and Tesema, 2014), 2.28%-9.8% (Farhat et al, 2017), 6.04%-12.02% (Gürbüz et al, 2017), 8.10% (Caputo et al, 2018), 11.96%-14.89% (Yıldırım, 2018), 0.11% (Micić et al, 2021), 6.00% (Khanjani et al, 2021), 30.29% (Xylia et al, 2021).…”

Section: Chemical Composition Of Essential Oilmentioning

confidence: 91%

Variation in Essential Oil Content and Chemical Composition of Rosemary (Rosmarinus officinalis L.) at Various Growth Stages in the Mediterranean Region

Barut

Cavdar

Tansı

et al. 2022

Turkish JAF Sci.Tech.

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Rosemary is an aromatic shrub native to the coasts of the Mediterranean region. Understanding the changes of chemical composition of essential oil is critical for more targeted rosemary harvesting, which can lead to higher-quality essential oils for agro-food, medicinal, and cosmetics uses. Therefore, rosemary plants were harvested at pre-flowering, full-flowering, and post-flowering stage grown in the experimental area of the Department of Field Crops at Çukurova University in order to determine the most suitable harvest time for the highest amount of essential oils and their important compounds. Essential oil content decreased slightly from the pre-flowering to post-flowering. The highest essential oil content (1.68%) was determined at the pre-flowering stage. Twenty-eight compounds were found representing 95.74%-96.74% of the total essential oil. The major compounds for rosemary were camphor (28.43%-32.74%), 1,8-cineol (20.80%-22.61%), isoborneol (6.05%-7.28%), verbenol (5.17%-6.98%), and limonene (5.71%-6.23%), respectively. Consequently, the optimal harvest time in terms of essential oil content, as well as camphor, 1,8-cineole and limonene content, may be considered as pre-flowering stage.

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Chemical Composition and Phytotoxic Activity of Rosmarinus officinalis Essential Oil

Cited by 8 publications

References 24 publications

Chemical Composition and Biological Activities of the Essential Oils of Leptospermum petersonii and Eucalyptus gunnii

Chemical Composition and Biological Activities of the Essential Oils of Leptospermum petersonii and Eucalyptus gunnii

Phytochemical Profile and Herbicidal (Phytotoxic), Antioxidants Potential of Essential Oils from Calycolpus goetheanus (Myrtaceae) Specimens, and in Silico Study

Variation in Essential Oil Content and Chemical Composition of Rosemary (Rosmarinus officinalis L.) at Various Growth Stages in the Mediterranean Region

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