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https://www.readbyqxmd.com/read/29772795/identification-of-insecticidal-constituents-from-the-essential-oil-from-the-aerial-parts-stachys-riederi-var-japonica
#1
Meirong Quan, Qi Zhi Liu, Zhi Long Liu
The essential oil of Stachys riederi var. japonica (Family: Lamiaceae) was extracted by hydrodistillation and determined by GC and GC-MS. A total of 40 components were identified, representing 96.01% of the total oil composition. The major compounds in the essential oil were acetanisole (15.43%), anisole (9.43%), 1,8-cineole (8.07%), geraniol (7.89%), eugenol (4.54%), caryophyllene oxide (4.47%), caryophyllene (4.21%) and linalool (4.07%). Five active constituents (acetanisole, anisole, 1,8-cineole, eugenol and geraniol) were identified by bioactivity-directed fractionation...
May 17, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29772107/chemical-variability-of-the-essential-oil-of-pituranthos-scoparius-from-algeria
#2
Charaf Eddine Watheq Malti, Maghnia Boussaïd, Larbi Belyagoubi, Mathieu Paoli, Marc Gibernau, Félix Tomi, Fewzia Atik Bekkara, Chahrazed Bekhechi
The chemical composition of 93 oils amples from the aerial parts of Pituranthos scoparius,harvested in three regions of Algeria, was investigated by GC(FID), GC/MS and 13 C-NMR. Monoterpene hydrocarbons were dominating in association with phenylpropanoids and a chemical variability was found highlighting three clusters. The composition of group I (36 samples) exhibited an atypical composition characterized by a very high contents of 6-methoxy elemicine (13.0-59.6%), followed by sabinene (1.1-43.0%) and limonene (6...
May 17, 2018: Chemistry & Biodiversity
https://www.readbyqxmd.com/read/29771946/in-vitro-comparison-of-three-common-essential-oils-mosquito-repellents-as-inhibitors-of-the-ross-river-virus
#3
Miora Ralambondrainy, Essia Belarbi, Wildriss Viranaicken, Renata Baranauskienė, Petras Rimantas Venskutonis, Philippe Desprès, Pierre Roques, Chaker El Kalamouni, Jimmy Sélambarom
BACKGROUND: The essential oils of Cymbopogon citratus (CC), Pelargonium graveolens (PG) and Vetiveria zizanioides (VZ) are commonly used topically to prevent mosquito bites and thus the risk of infection by their vectored pathogens such as arboviruses. However, since mosquito bites are not fully prevented, the effect of these products on the level of viral infection remains unknown. OBJECTIVES: To evaluate in vitro the essentials oils from Reunion Island against one archetypal arbovirus, the Ross River virus (RRV), and investigate the viral cycle step that was impaired by these oils...
2018: PloS One
https://www.readbyqxmd.com/read/29771453/functionalization-of-lipid-based-nutrient-supplement-with-%C3%AE-cyclodextrin-inclusions-of-oregano-essential-oil
#4
Shashank Gaur, Emely C Lopez, Ankur Ojha, Juan E Andrade
Intestinal parasitic infection is one of the main causes of acute undernutrition in children. Oral consumption of oregano essential oil (OEO) can reduce intestinal parasitic infections, however, its addition to therapeutic and supplementary foods is hampered by its undesirable flavor. The objective of this study was to develop a functional lipid-based nutrient supplement (LNS) containing OEO, which is stable, acceptable and provides targeted intestinal delivery of bioactive. β-cyclodextrin (β-CyD) inclusion complexes of OEO (β-CyD-OEO), and carvacrol (β-CyD-CV) (1:1 molar) were prepared using slurry complexation (-20 °C) method and characterized based on encapsulation efficiency, moisture content, morphology, and 2-phase in vitro digestion stability...
May 17, 2018: Journal of Food Science
https://www.readbyqxmd.com/read/29771131/mouthwash-containing-croton-doctoris-essential-oil-in-vitro-study-using-a-validated-model-of-caries-induction
#5
Yasmin Etienne Albuquerque, Marcelle Danelon, Marcos José Salvador, Cristiane Yumi Koga-Ito, Alberto Carlos Botazzo Delbem, Román Yesid Ramirez-Rueda, Aline Vidal Lacerda Gontijo, Fernanda Lourenção Brighenti
AIM: To validate an in vitro caries model and to evaluate an experimental mouthwash containing Croton doctoris essential oil.  Materials & methods: To validate the experimental model, we used McBain medium and polymicrobial biofilms. The EOM (essential oil mouthwash) was tested using the validated model. Microbial composition (colony-forming unit/ml), acidogenicity, enamel demineralization (percentage of surface enamel hardness loss), cytotoxicity and essential oil composition were evaluated...
May 17, 2018: Future Microbiology
https://www.readbyqxmd.com/read/29770713/component-composition-of-the-extracts-and-essential-oils-from-the-alhagi-canescens-growing-in-uzbekistan-and-their-antimicrobial-activity
#6
Sabir Nishanbaev, Khayrulla Bobakulov, Bakhodir Okhundedaev, Sobirdjan Sasmakov, Elvira Yusupova, Shakhnoz Azimova, Nasrulla Abdullaev
The volatile compounds of hexane, benzene extracts and essential oils (EOs) isolated by steam- and hydrodistillation methods from aerial part of Alhagi canescens were studied by GC-MS analysis. Seventeen components were found in the hexane and benzene extracts, among them palmitic acid (25.2 and 22.1%), neophytadiene (7.3 and 22.3%), cis-chrysanthenyl acetate (11.0% in benzene), cis-geranyl acetate (7.8% in benzene) were major components. The first time fifty-six volatile compounds were identified in the EOs and camphor (5...
May 17, 2018: Natural Product Research
https://www.readbyqxmd.com/read/29770558/pharmacokinetic-and-antimicrobial-activity-of-a-new-carvacrol-based-product-against-a-human-pathogen-campylobacter-jejuni
#7
Marion Allaoua, Pierre Etienne, Virginie Noirot, Jean-Luc Carayon, Nathan Téné, Elsa Bonnafé, Michel Treilhou
AIM: In vitro and in vivo studies were conducted to test a new carvacrol-based product designed to delay the carvacrol release so that it could reach the caeca of broiler chickens in order to control Campylobacter jejuni. METHODS AND RESULTS: Antimicrobial activity of carvacrol, a constituent of oregano and thyme essential oil, has been demonstrated against C. jejuni in vitro, and this compound was found beneficial for broiler growth. Here, we tested a new liquid formulation that did not change the antibacterial efficacy of carvacrol against C...
May 16, 2018: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/29770504/black-pepper-piper-nigrum-essential-oil-demonstrates-tissue-remodeling-and-metabolism-modulating-potential-in-human-cells
#8
Xuesheng Han, Cody Beaumont, Damian Rodriguez, Tyler Bahr
Very few studies have investigated the biological activities of black pepper essential oil (BPEO) in human cells. Therefore, in the current study, we examined the biological activities of BPEO in cytokine-stimulated human dermal fibroblasts by analyzing the levels of 17 important protein biomarkers pertinent to inflammation and tissue remodeling. BPEO exhibited significant antiproliferative activity in these skin cells and significantly inhibited the production of Collagen I, Collagen III, and plasminogen activator inhibitor 1...
May 17, 2018: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/29770449/effects-of-a-nanoemulsion-with-copaifera-officinalis-oleoresin-against-monogenean-parasites-of-colossoma-macropomum-a-neotropical-serrasalmidae
#9
D S S Valentim, J L Duarte, A E M F M Oliveira, R A S Cruz, J C T Carvalho, C Solans, C P Fernandes, M Tavares-Dias
Monogeneans are ectoparasites that may cause losses in production and productivity in the aquaculture of Colossoma macropomum. Chemotherapeutics used in aquaculture usually have major adverse effects on fish; hence, the use of essential oils has been considered advantageous, but these are not soluble in water. Thus, the use of nanostructures to enhance water solubility of compounds and improve bioactivity may be very promising. This study investigated the antiparasitic activity of nanoemulsion prepared with Copaifera officinalis oleoresin (50, 100, 150, 200 and 300 mg/L), against monogenean parasites from the gills of C...
May 16, 2018: Journal of Fish Diseases
https://www.readbyqxmd.com/read/29769270/effective-combination-adjuvants-engage-both-tlr-and-inflammasome-pathways-to-promote-potent-adaptive-immune-responses
#10
Emilie Seydoux, Hong Liang, Natasha Dubois Cauwelaert, Michelle Archer, Nicholas D Rintala, Ryan Kramer, Darrick Carter, Christopher B Fox, Mark T Orr
The involvement of innate receptors that recognize pathogen- and danger-associated molecular patterns is critical to programming an effective adaptive immune response to vaccination. The synthetic TLR4 agonist glucopyranosyl lipid adjuvant (GLA) synergizes with the squalene oil-in-water emulsion (SE) formulation to induce strong adaptive responses. Although TLR4 signaling through MyD88 and TIR domain-containing adapter inducing IFN-β are essential for GLA-SE activity, the mechanisms underlying the synergistic activity of GLA and SE are not fully understood...
May 16, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29768944/zataria-multiflora-essential-oil-reduces-replication-rate-of-avian-influenza-virus-h9n2-subtype-in-challenged-broiler-chicks
#11
Arzhang Shayeganmehr, Mehdi Vasfi Marandi, Vahid Karimi, Abbas Barin, Arash Ghalyanchi-Langeroudi
The effect of Zataria multiflora essential oil on replication rate of the H9N2 virus in target organs was determined by real-time PCR. One-day-old broiler chicks were randomly divided into six groups and were challenged with H9N2 influenza. Two groups received either 20 or 40 µl/kg body weight/day Zataria multiflora essential oils (ZM) seven days before the challenge while two other groups received the essential oil at the same dosage but after H9N2 challenge. One group received 4 mg/kg body weight/day of the anti-viral compound amantadine after challenge and the last group received no treatment and served as the control...
May 17, 2018: British Poultry Science
https://www.readbyqxmd.com/read/29768252/chemical-composition-and-antifungal-activity-of-essential-oils-from-four-asteraceae-plants-grown-in-egypt
#12
Rose Vanessa Bandeira Reidel, Simona Nardoni, Francesca Mancianti, Claudia Anedda, Abd El-Nasser G El Gendy, Elsayed A Omer, Luisa Pistelli
The objective of the present paper was the assessment of the chemical composition of the essential oils from four Asteraceae species with a considerable food, medicinal, and agricultural value, collected in Egypt, together with their in vitro inhibitory activity against molds and yeasts. The essential oil of Launaea cornuta flowers was also evaluated for the first time, but because of its very low yield (<0.01%), no antifungal test was performed.
May 16, 2018: Zeitschrift Für Naturforschung. C, A Journal of Biosciences
https://www.readbyqxmd.com/read/29768020/chemical-diversity-of-the-essential-oils-of-twenty-populations-of-tanacetum-polycephalum-sch-bip-from-iran
#13
Mehran Mojarrad, Siavash Hosseini Sarghein, Ali Sonboli
Chemical diversity of the essential oils of twenty wild populations of Tanacetum polycephalum Sch. Bip., was investigated. The aerial parts of T. polycephalum were collected at full flowering stage from West Azerbaijan Province of Iran, air-dried; hydrodistilled to produce essential oils. The essential oils were analyzed by GC-FID and GC-MS. A total of forty compounds were identified accounting for 96.4-99.9% of the total oils. The most principal compounds were cis-thujone (0-82.3%), trans-thujone (0-79.8%), camphor (1...
May 16, 2018: Natural Product Research
https://www.readbyqxmd.com/read/29767138/effects-of-essential-oils-on-performance-egg-quality-nutrient-digestibility-and-yolk-fatty-acid-profile-in-laying-hens
#14
Xuemei Ding, Yang Yu, Zhuowei Su, Keying Zhang
The study was conducted to investigate the effect of essential oils on performance, egg quality, nutrient digestibility and yolk fatty acid profile in laying hens. A total of 960 Lohmann laying hens aged 53 weeks were enrolled, under 4 different treatment diets supplemented with 0, 50, 100 and 150 mg/kg essential oils (Enviva EO, Dupont Nutrition Biosciences ApS, Denmark), respectively. Each treatment was replicated 8 times with 30 birds each. Birds were fed dietary treatment diets for 12 weeks (54 to 65 weeks)...
June 2017: Animal nutrition
https://www.readbyqxmd.com/read/29766690/garden-nasturtium-tropaeolum-majus-l-a-source-of-mineral-elements-and-bioactive-compounds
#15
Karolina Jakubczyk, Katarzyna Janda, Katarzyna Watychowicz, Jagoda Łukasiak, Jolanta Wolska
The garden nasturtium (Tropaeolum majus L.) belongs to the family Tropaeolaceae. Native to South America it was brought to Europe in XVI century. It is a plant with numerous healing properties. Medicinal plants such as the garden nasturtium contain trace elements and bioactive compounds which can be easily absorbed by the human body. The flowers and other parts of the garden nasturtium are a good source of micro elements such as potassium, phosphorus, calcium and magnesium, and macro elements, especially of zinc, copper and iron...
2018: Roczniki Państwowego Zakładu Higieny
https://www.readbyqxmd.com/read/29765939/comparing-the-relative-interfacial-affinity-of-soft-colloids-with-different-crosslinking-densities-in-pickering-emulsions
#16
Man-Hin Kwok, To Ngai
Pickering emulsions prepared by various kinds of soft colloids such as the poly( N -isopropylacrylamide) (PNIPAM)-based microgels, have been studied for decades in order to fabricate stimuli-responsive emulsions. It has been generally viewed that the interfacial properties of the microgel monolayers and the emulsion stability are dominated by the softness or deformability of the microgel particles. However, there is still no convenient way to characterize the adsorption/desorption energy of the microgels at the interface although this is an essential topic for microgel-stabilized emulsions...
2018: Frontiers in Chemistry
https://www.readbyqxmd.com/read/29765815/in-vitro-investigation-of-antimicrobial-activities-of-ethnomedicinal-plants-against-dental-caries-pathogens
#17
Mamta Besra, Vipin Kumar
The study aimed to evaluate the antimicrobial activity of medicinal plant extracts against the bacterial pathogens prominent in dental caries. A total of 20 plant species (herbs, shrubs and trees) belonging to 18 genera and 15 families were documented for dental caries. Antimicrobial activity of solvent extracts and essential oil from plants were determined by zone of inhibition on the growth of Streptococcus mutans (MTCC 497) and Lactobacillus acidophilus (MTCC 10307) using the agar well diffusion method. The results of in vitro antimicrobial assay prove that methanol is more successful in the extraction of phytochemicals from plant samples than aqueous solvent, as methanol extracts show higher antimicrobial activity than aqueous extracts against both the test pathogens...
May 2018: 3 Biotech
https://www.readbyqxmd.com/read/29765461/anticancer-properties-of-essential-oils-and-other-natural-products
#18
REVIEW
K Blowman, M Magalhães, M F L Lemos, C Cabral, I M Pires
Essential oils are secondary metabolites with a key-role in plants protection, consisting primarily of terpenes with a volatile nature and a diverse array of chemical structures. Essential oils exhibit a wide range of bioactivities, especially antimicrobial activity, and have long been utilized for treating various human ailments and diseases. Cancer cell prevention and cytotoxicity are exhibited through a wide range of mechanisms of action, with more recent research focusing on synergistic and antagonistic activity between specific essential oils major and minor components...
2018: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/29764438/larvicidal-activity-of-zanthoxylum-acanthopodium-essential-oil-against-the-malaria-mosquitoes-anopheles-anthropophagus-and-anopheles-sinensis
#19
Qi He, Wenxia Wang, Liang Zhu
BACKGROUND: Zanthoxylum acanthopodium has insecticidal effect in Chinese traditional medicine. In this study, the essential oil from the dried Zanthoxylum plant was used as a larvicidal compound against the malaria mosquitoes, Anopheles anthropophagus and Anopheles sinensis. METHODS: Compounds in the Zanthoxylum essential oil were investigated by gas chromatography and mass spectroscopy (GC-MS). The larvicidal bioassays of the whole oil, as well as the main compounds in the oil (estragole and eucalyptol) were performed using WHO method...
May 15, 2018: Malaria Journal
https://www.readbyqxmd.com/read/29763981/antibacterial-activity-of-cladanthus-arabicus-and-bubonium-imbricatum-essential-oils-alone-and-in-combination-with-conventional-antibiotics-against-enterobacteriaceae-isolates
#20
Abdellah Aghraz, Qada Benameur, Teresa Gervasi, Loubna Ait Dra, Meriem Hind Ben-Mahdi, Mustapha Larhsini, Mohamed Markouk, Nicola Cicero
Multidrug-resistant bacteria have become common all over the world, necessitating the development of new therapeutic strategies. Synergistic interactions between conventional antibiotics and natural bioactive may have therapeutic benefits in a clinical setting. There are plenty of medicinal plants that have proven efficacy against broad spectrum of microorganisms. The aim of the work was to assess the antibacterial activity of Cladanthus arabicus, a Moroccan medicinal plant, and Bubonium imbricatum, a Moroccan endemic plant...
May 15, 2018: Letters in Applied Microbiology
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