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Antimicrobial Potential of Essential Oils from Cerrado Plants against Multidrug-Resistant Foodborne Microorganisms.

Foodborne pathogens are a real public health concern in an escalating antimicrobial resistance scenario. Natural products represent a promising source of bioactive molecules, and essential oils have attracted much attention due to their myriad of biological properties, including antibacterial activities. In this context, essential oils obtained from the leaves of Chromolaena squalida, Campomanesia sessiliflora, Myrsine guianensis, Matayba guianensis, Siparuna guianensis, Ocotea minarum and Endlicheria paniculata-species from the Cerrado biome of Midwest Brazil-were extracted and evaluated for …

Characterization of the Volatile Components of Essential Oils of Selected Plants in Kenya.

Essential oils are secondary metabolites that plants produce for protection from pests and predators, attraction of pollinators, and seed dispersal. The oils are made up of a mixture of compounds that give a characteristic flavour and odour. Currently, essential oils are receiving great attention in research for their phytochemical and antimicrobial activities. However, there is scanty information on the chemical composition of many plants. This study provides a detailed analysis of the chemical composition of essential oils of ginger, garlic, tick berry, and Mexican marigold in Kenya. The ess…

The Undiscovered Potential of Essential Oils for Treating SARS-CoV-2 (COVID-19).

On 11th March 2020, the World Health Organisation (WHO) announced a pandemic caused by a novel beta-coronavirus SARS-CoV-2, designated COVID-19. The virus emerged in December 2019 in Wuhan, China, has spread across the world as a global pandemic. The traditional use of medicines from plants can be traced back to 60,000 years. Global interest in the development of drugs from natural products has increased greatly during the last few decades. Essential oils (EOs) have been studied through the centuries and are known to possess various pharmaceutical properties. In the present review, we have hig…

Основные масла и их химические компоненты против личинок Aedes aegypti L. (Diptera: Culicidae).

Основное внимание в ходе этого обзора уделялось токсичности основных масел и их компонентов для личинок Аедес аегипти Л. (Диптера, Кулицидае), которые являются ключевым вектором серьезных арбовирусных заболеваний, таких, как денге, чикунгунья, зика и желтая лихорадка. Этот обзор основан на оригинальных статьях, полученных путем поиска основных баз данных за последние шесть лет. Наш обзор литературы показывает, что 337 основных масел из 225 видов растений были испытаны на личиницидную биоактивность. Более 60% этих основных масел были признаны активными (LC50 >100 мкг/мл). Большинство видов прин

Совпадение в аннотации оригинала
This review focused on the toxicity of essential oils and their constituents against Aedes aegypti L. (Diptera, Culicidae) larvae, a key vector of important arboviral diseases, such as dengue, chikungunya, zika, and yellow fever. This review is based on original articles obtained by searching major databases in the last six years. Our literature review shows…

Clotrimazole-Loaded Mediterranean Essential Oils NLC: A Synergic Treatment of Candida Skin Infections.

The increasing development of resistance of Candida species to traditional drugs represents a great challenge to the medical field for the treatment of skin infections. Essential oils were recently proposed to increase drug effectiveness. Herein, we developed and optimized (23 full factorial design) Mediterranean essential oil (Rosmarinus officinalis, Lavandula x intermedia "Sumian", Origanum vulgare subsp. hirtum) lipid nanoparticles for clotrimazole delivery, exploring the potential synergistic effects against Candida spp. Small sized nanoparticles (<100 nm) with a very broad size distributi…

Essential Oils: An Impending Substitute of Synthetic Antimicrobial Agents to Overcome Antimicrobial Resistance.

Antimicrobial resistance (AMR) is an emerging problem in the world that has a significant impact on our society. AMR made conventional drugs futile against microorganisms and diseases untreatable. Plant-derived medicines are considered to be safe alternatives as compared to synthetic drugs. Active ingredients and the mixtures of these natural medicines have been used for centuries, due to their easy availability, low cost, and negligible side effects. Essential oils (EOs) are the secondary metabolites that are produced by aromatic plants to protect them from microorganisms. However, these EOs …

Active Essential Oils and Their Components in Use against Neglected Diseases and Arboviruses.

The term neglected diseases refers to a group of infections caused by various classes of pathogens, including protozoa, viruses, bacteria, a … ce of humanity. One of the principal fractions of chemical substances found in plants are essential oils (EOs). EOs consist of a mixture of volatile and hydrophobic secondary metabolites with marked odors, composed primarily of terpenes and phenylpropanoids. They have great commercial value and were widely used in traditional medicine, by phytotherapy …

Lavandula stoechas essential oils protect against Malathion-induces reproductive disruptions in male mice.

BACKGROUND: The current study was conducted to evaluate the protective effect of Lavandula stoechas essential oils (LSEO) against malathion (M) exposure-caused reprotoxicity in male mice as well as the possible mechanisms implicated in such protection. METHODS: Six-eight-week-old male mice weighting 25-30 g were used and divided into four groups: normal-control, LSEO (50 mg/kg, b.w.), malathion (200 mg/kg, b.w.) and malathion + LSEO treated mice. Malathion was emulsioned in corn oil and per orally administered for 30 days. LSEO was daily administrated during the same period. LSEO chemical ide…

Citron Essential Oils Alleviate the Mediators Related to Rosacea Pathophysiology in Epidermal Keratinocytes.

BACKGROUND: Citron is well known for an abundance of antioxidative and anti-inflammatory ingredients such as vitamin C, polyphenol compounds, flavonoids, and limonoids. OBJECTIVE: In this study, we aimed to evaluate the effects of citron essential oils on rosacea mediators in activated keratinocytes in vitro. METHODS: Normal human epidermal keratinocytes (NHEKs) were stimulated with 1α, 25-dihydroxyvitamin D3 (VD3) and interleukin 33 (IL-33) with LL-37 to induce rosacea mediators such as kallikrein 5 (KLK5), cathelicidin, vascular endothelial growth factor (VEGF), and transient receptor pote…

Laying Waste to Mercury: Inexpensive Sorbents Made from Sulfur and Recycled Cooking Oils.

Mercury pollution threatens the environment and human health across the globe. This neurotoxic substance is encountered in artisanal gold mi … this need by introducing low-cost mercury sorbents made solely from sulfur and unsaturated cooking oils. A porous version of the polymer was prepared by simply synthesising the polymer in the presence of a sodium chloride porogen. The resulting material is a rubber that captures liquid mercury metal, mercury vapour, inorganic mercury bound to organic …

Essential oils-containing mouthwashes for gingivitis and plaque: Meta-analyses and meta-regression.

OBJECTIVES: To evaluate the efficacy of EO as adjuncts to mechanical plaque control (MPC) on the reduction of plaque and gingivitis when com … and may also reach the interproximal area. CLINICAL SIGNIFICANCE: Mouthwashes containing essential oils should be considered the first choice for daily use as adjuvants to self-performed mechanical plaque control.

Plant essential oils and potassium metabisulfite as repellents for Drosophila suzukii (Diptera: Drosophilidae).

Spotted wing drosophila, Drosophila suzukii, is a globally invasive pest of soft-skinned fruit. Females oviposit into ripening fruit and larvae cause direct destruction of tissues. As many plant essential oils are permitted food additives, they may provide a safe means of protecting fruit from D. suzukii infestation in both conventional and organic production systems. Twelve oils and potassium metabisulfite (KMS) were screened in the laboratory as repellents for D. suzukii flies. Most essential oils deterred D. suzukii flies from cotton wicks containing attractive raspberry juice. Peppermint o…

Antifungal and Herbicidal Effects of Fruit Essential Oils of Four Myrtus communis Genotypes.

The chemical composition of the essential oils isolated by hydrodistillation from the fruits of four selected Myrtus communis L. genotypes from Turkey was characterized by GC-FID and GC/MS analyses. 1,8-Cineole (29.20-31.40%), linalool (15.67-19.13%), α-terpineol (8.40-18.43%), α-pinene (6.04-20.71%), and geranyl acetate (3.98-7.54%) were found to be the major constituents of the fruit essential oils of all M. communis genotypes investigated. The oils were characterized by high amounts of oxygenated monoterpenes, representing 73.02-83.83% of the total oil compositions. The results of the funga…

Antimicrobial Activity of Chitosan Films With Essential Oils Against Listeria monocytogenes on Cabbage.

BACKGROUND: The highest incidence of listeriosis, due to consumption of ready-to-eat foods and fresh, shredded, minimally processed vegetables, occurs among pregnant women and the elderly. In order to reduce the prevalence of listeriosis among consumers, better protective measures are recommended. Chitosan films, with or without added essential oils, represent a modern, safe method of preserving the quality of such vegetables and significantly reducing the incidence of Listeria monocytogenes in these foods. OBJECTIVES: The present study was conducted to evaluate the antimicrobial properties o…

Study of the Interference between Plectranthus Species Essential Oils from Brazil and Aminoglycosides.

Plectranthus is one of the most representative genera of Lamiaceae family. In this study, the essential oils from Plectranthus amboinicus, Plectranthus ornatus, and Plectranthus barbatus were investigated for their chemical composition and antimicrobial and modulatory activities. The major components found were carvacrol (54.4%-P. amboinicus) and eugenol (22.9%-P. ornatus e 25.1%-P. barbatus). In vitro antimicrobial activity was conducted against Escherichia coli, Proteus vulgaris, Bacillus cereus, Pseudomonas aeruginosa, Staphylococcus aureus, and Staphylococcus aureus (multiresistant) using …

Bioactivity of Argentinean essential oils against permethrin-resistant head lice, Pediculus humanus capitis.

Infestation with the head louse, Pediculus humanus capitis De Geer (Phthiraptera: Pediculidae), is one of the most common parasitic infestation of humans worldwide. Traditionally, the main treatment for control of head lice is chemical control that is based in a wide variety of neurotoxic synthetic insecticides. The repeated overuse of these products has resulted in the selection of resistant populations of head lice. Thus, plant-derived insecticides, such as the essential oils seem to be good viable alternatives as some have low toxicity to mammals and are biodegradable. We determined the ins…

Quantitation of triacylglycerols from plant oils using charged aerosol detection with gradient compensation.

Quantitative analysis of triacylglycerols (TGs) in plant oils and animal fats by normalization of peak areas can lead to erroneous results due to the large response differences with common HPLC detectors between the various TGs. The charged aerosol detector (CAD), that generates an almost universal response for non-volatile compounds, was combined with non-aqueous reversed-phase HPLC (NARP-HPLC) to develop a simple quantitative method, without need for RFs, for the analysis of complex natural TG mixtures from plant oils. Two 25 cm Hypersil ODS columns, connected in series, and a mobile phase g…

Primula allergic dermatitis simulating occupational contact dermatitis induced by metals, oils and greases.

A case of the hands and face dermatitis in a patient employed in a store with motor-car spare parts is presented. Both the patient and her doctor were convinced that skin lesions were caused by the contact with metals, oils and greases. After detecting allergy to primine (after 48 and 96 h, + +), the patient recalled that two months earlier she had started to grow primrose (Primula obconica) at home. Patch tests with the primrose leaf and flower were also positive (+ +). The presented case provides evidence that routine primine testing is essential in all patients with suspected contact allerg…

Repellency effect of forty-one essential oils against Aedes, Anopheles, and Culex mosquitoes.

Since ancient times, plant products were used in various aspects. However, their use against pests decreased when chemical products became d … he skin of human volunteers to find out the protection time and repellency. The five most effective oils were those of Litsea (Litsea cubeba), Cajeput (Melaleuca leucadendron), Niaouli (Melaleuca quinquenervia), Violet (Viola odorata), and Catnip (Nepeta cataria), which induced a protection time of 8 h at the maximum and a 100% repellency against all t …

The influence of water content of triglyceride oils on the solubility of steroids.

PURPOSE: To determine if hydration of long- and medium-chain triglyceride oils (long = soybean and olive, medium = Miglyol 812) has a significant effect on the ability to solubize the model hydrophobic compounds progesterone, estradiol, and testosterone. METHODS: Soybean, olive, and Miglyol 812 oils were treated in one of two ways: hydrated or desiccated (hydrated, then dried). Solubility of (3)H-labeled progesterone, estradiol, and testosterone in the triglycerides was measured by liquid scintillation counting. RESULTS: Both hydration state and chain length of the triglycerides were shown t…