Chemical Composition of the Essential Oils in &amp;lt;i&amp;gt;Eugenia caryophylata&amp;lt;/i&amp;gt;, Thunb from Amboina Island

Sohilait, Hanoch Julianus

doi:10.11648/j.sjc.20150306.13

Cited by 26 publications

(11 citation statements)

References 11 publications

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“…In fact, Cárdenas et al (2014) found that E. "minicomun" presented 2.84% on average of leaf damage (among the lowest rates of herbivory in that study), caused by herbivores because of small leaf size and high investment in physical defenses such as punching resistance. Accordingly, our results show that E. "minicomun" would also escape from herbivores by their more robust chemical properties of essential oils, which have antibacterial and antifungal effects, a common characteristic of Myrtaceae family (Nascimento, Locatelli, Freitas, & Silva, 2000;Sohilait, 2015). If we consider, however, that the mean herbivore damage in the 28 studied species was of 13.4% ± 5.9 (Cárdenas et al, 2014) and that E. coriacea showed 8.02% on average and A. nicaraguensis showed 13.34%, one may agree that, at the community level, plant traits other than secondary metabolites may also strongly predict herbivore susceptibility in tropical hyper- Metz et al (2010) (Kunstler et al, 2015), counteracting the effects of the CNDD.…”

Section: Variation In Secondary Metabolite Investment At Intra-and mentioning

confidence: 63%

Physical, but not chemical, antiherbivore defense expression is related to the clustered spatial distribution of tropical trees in an Amazonian forest

Cobo-Quinche

Endara

Valencia

et al. 2019

Ecology and Evolution

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The conspecific negative density dependence hypothesis states that mortality of young trees (seedlings and saplings) is higher near conspecific adults due to mechanisms such as allelopathy, intraspecific competition, and pest facilitation, explaining why in the tropics, most of plant species tend to be rare and live dispersed. However, there are some tree species that defy this expectation and grow in large clusters of conspecific juveniles and adults. We hypothesize that conspecifics living in clusters show higher and/or more variable defensive profiles than conspecifics with dispersed distributions. We evaluated our hypothesis by assessing the expression of physical leaf traits (thickness, and the resistance to punch, tear and shear) and leaf chemical defenses for six clustered and six non‐clustered tree species in Yasuní National Park, Ecuadorian Amazon. We ask ourselves whether (a) clustered species have leaves with higher physical resistance to damage and more chemical defenses variability than non‐clustered species; (b) saplings of clustered species may show higher physical resistance to damage and higher variation on chemical leaf defenses than their conspecific adults, and (c) saplings of non‐clustered species show lower resistance to physical damage and lower variation in chemical defenses compared to conspecific adults. Overall, our study did not support any of our hypotheses. Remarkably, we found that soluble metabolites were significantly species‐specific. Our study suggests that plants physical but not chemical leaf antiherbivore defenses may be a crucial strategy for explaining survivorship of clustered species. Trees in Yasuní may also fall along a suite of tolerance/escape/defense strategies based on limitations of each species physiological constraints for survival and establishment. We conclude that other mechanisms, such as those related to indirect defenses, soil nutrient exploitation efficiency, volatile organic compounds, delayed leaf‐greening, and seed dispersal mechanisms, shall be evaluated to understand conspecific coexistence in this forest.

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Section: Variation In Secondary Metabolite Investment At Intra-and mentioning

confidence: 63%

Physical, but not chemical, antiherbivore defense expression is related to the clustered spatial distribution of tropical trees in an Amazonian forest

Cobo-Quinche

Endara

Valencia

et al. 2019

Ecology and Evolution

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“…The increased antioxidant capacity of the diets is related to the chemical composition and antioxidant property of CLEO, which is mainly made up of eugenol (81 to 86%), its main bioactive representative (Sohilait, 2015). Moreover, Jirovetz et al (2006) found β-caryophylene (17.4%) and α-humulene (2.1%) in this oil, which have antioxidant activity.…”

Section: Discussionmentioning

confidence: 96%

Flaxseed oil and clove leaf essential oil in Zebrafish diet (Danio rerio)

Silva

Carbonera

et al. 2020

Acta Sci. Anim. Sci.

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Flaxseed oil is recognized as the plant source richest in α-linolenic acid, whereas clove leaf essential oil has a strong antioxidant capacity. The objective of this study was to determine the in vitro antioxidant capacity of diets containing a combination of flaxseed oil (FO) and clove leaf essential oil (CLEO), as well as to use zebrafish (Danio rerio) to assess their effect on the animals’ growth. Fifty days after hatching, a total of 420 male specimens (0.29 ± 0.04 g) were divided into seven groups for each diet and fed for 55 days to be used, with the diets being: control, absent FO and CLEO; 3% FO + 0.5% CLEO; 3% FO + 1% CLEO; 6% FO + 0.5% CLEO; 6% FO + 1% CLEO; 9% FO + 0.5% CLEO and 9% FO + 1% CLEO. Antioxidant activity was determined through DPPH (2,2-diphenyl-1-picrylhydrazyl) tests, showing interaction effect between factors (FO x CLEO, p < 0.05); the diets containing 1% combined with 3, 6 or 9% of FO presented means higher than those of the 0.5% diets. No mortality was observed during the experiment. For final weight and weight gain, there was no interaction effect (p > 0.05), only isolated effect for FO, with the fish fed 6 and 9% diets having the best results. Final total length and specific growth rates showed interaction effect (p < 0.05). As for specific growth rates, the best response was that of the diet with 6% FO and 0.5% CLEO. Final length showed increase with FO levels, even when there was association with 0.5 or 1% of CLEO. Therefore, combined use of 9% of FL with 0.5% of CLEO is recommended for zebrafish.

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“…& Perry (Myrtaceae) also found in the literature as Syzygium aromaticum is widely used and well known for its medicinal properties. It is grown naturally in Moluccas Islands, East Indonesia, and was cultivated in Tanzania, Madagascar, Sri Langka, India, Malaysia, Brazil, Jamaica, and Guinea (Sohilait 2015). The major component of the flower buds (cloves) oil is usually considered to be eugenol, with lesser and variable amounts of βcaryophyllene and other components such as benzyl alcohol (Chaieb et al 2007).…”

Section: Introductionmentioning

confidence: 99%

Study of the biological activity of essential oils-water mixtures

Lazarova-Zdravkova

Tsanova

Stoyanova

et al. 2021

FSAB

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This study aimed to investigate the biological activity of aqueous mixtures of two essential oils. The mixtures were prepared by mixing certain amounts of lavender and clove oils with distilled water at room temperature. In the case of lavender oil, a relatively clear saturated aqueous phase was obtained after mixing with an excess of the essential oil. The clove oil formed stable oil-in-water emulsions. The antibacterial activity of the samples was tested against two model bacterial strains. The growth of the Gram-negative Escherichia coli K12 and the Gram-positive Bacillus subtilis 3562 was determined in 96-well microplates. A more prominent inhibition activity against E. coli K12 strain compared to B. subtilis 3562 for both oil-water mixtures was observed. A disk diffusion test indicated growth inhibition by the lavender oil during the tests against the Gram-positive strain (zones of around 11.7 mm) while clove oil inhibited both bacteria (12 mm - B. subtilis 3562 and 13.66 mm - E. coli K12). The DPPH free radical method showed no antioxidant activity for the aqueous solution of lavender oil. The pure lavender oil exhibited negligible activity compared to the gallic acid reference solution, the clove essential oil, and its emulsion. A quantitative relationship between the content of cloves essential oil in the emulsion and its radical scavenging capacity was demonstrated.

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Chemical Composition of the Essential Oils in <i>Eugenia caryophylata</i>, Thunb from Amboina Island

Cited by 26 publications

References 11 publications

Physical, but not chemical, antiherbivore defense expression is related to the clustered spatial distribution of tropical trees in an Amazonian forest

Physical, but not chemical, antiherbivore defense expression is related to the clustered spatial distribution of tropical trees in an Amazonian forest

Flaxseed oil and clove leaf essential oil in Zebrafish diet (Danio rerio)

Study of the biological activity of essential oils-water mixtures

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