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Essential oils

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https://www.readbyqxmd.com/read/28544594/diversity-of-aromatic-hydroxylating-dioxygenase-genes-in-mangrove-microbiome-and-their-biogeographic-patterns-across-global-sites
#1
Sanderson T P de Sousa, Lucélia Cabral, Gileno Vieira Lacerda Júnior, Valéria M Oliveira
Aromatic hydrocarbons (AH), such as polycyclic aromatic hydrocarbons, are compounds largely found in nature. Aromatic-ring-hydroxylating dioxygenases (ARHD) are proteins involved in AH degradation pathways. We used ARHD functional genes from an oil-impacted mangrove area and compared their diversity with other sites around the world to understand the ARHD biogeographic distribution patterns. For this, a comprehensive database was established with 166 operational protein families (OPFs) from 1,758 gene sequences obtained from 15 different sites worldwide, of which twelve are already published studies and three are unpublished...
May 23, 2017: MicrobiologyOpen
https://www.readbyqxmd.com/read/28544513/composition-antioxidant-and-anticancer-activities-of-the-essential-oil-from-fresh-and-air-dried-aerial-parts-of-pallenis-spinosa
#2
Mahmoud A Al-Qudah, Ayman M Saleh, Naif L Alhawsawi, Hala I Al-Jaber, Syed A Rizvi, Fatma U Afifi
This study was performed to determine the chemical composition, antioxidant and anticancer effects of essential oils extracted from the aerial parts of fresh (F-PSEO) and air-dried (D-PSEO) Pallenis spinosa. The composition of the oils was analyzed by GC and GC-MS, the antioxidant activity by free radical scavenging and metal chelating assays, and their cytotoxicity by a flow cytometry analysis. The primary components in both oils were sesquiterpene hydrocarbons and oxygentated sesquiterpenes. F-PSEO contained 36 different compounds; α-cadinol (16...
May 23, 2017: Chemistry & Biodiversity
https://www.readbyqxmd.com/read/28540643/improvement-of-fermented-fish-flour-quality-using-essential-oil-extracted-from-fresh-leaves-of-pimenta-racemosa-mill-j-w-moore
#3
Euloge S Adjou, René G Dègnon, Edwige Dahouenon-Ahoussi, Mohamed M Soumanou, Dominique C K Sohounhloue
The aim of this study was to evaluate the efficacy of the essential oil extracted from fresh leaves of Pimenta racemosa in the improvement of fermented fish flour producing technology. Essential oil of Pimenta racemosa was extracted by hydrodistillation and its chemical composition was determined by GC and GC/MS. Different types of fermented fish flours from Lesser African Threadfin (Galeoides decadactylus) were produced by the modification of the traditional processing technology and the introduction of a step of essential oil adjunction during the process...
May 24, 2017: Natural Products and Bioprospecting
https://www.readbyqxmd.com/read/28539061/chemical-composition-and-%C3%AE-amylase-inhibitory-activity-of-the-essential-oil-from-sabina-chinensis-cv-kaizuca-leaves
#4
Dongyu Gu, Chen Fang, Jiao Yang, Minjing Li, Hengming Liu, Yi Yang
Sabina chinensis cv. Kaizuca (SCK) is a variant of S. chinensis L. The essential oil from its leaves exhibited α-amylase inhibitory activity in vitro and the IC50 value was 187.08 ± 0.56 μg/mL. Nineteen compounds were identified from this essential oil by gas chromatography-mass spectrometry (GC-MS) analysis. The major compounds identified were bornyl acetate (42.6%), elemol (20.5%), β-myrcene (13.7%) and β-linalool (4.0%). In order to study the reason of the α-amylase inhibitory activity of this essential oil, the identified compounds were docked with α-amylase by molecular docking individually...
May 25, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28536637/ppar%C3%AE-agonist-through-the-terminal-differentiation-phase-is-essential-for-adipogenic-differentiation-of-fetal-ovine-preadipocytes
#5
Yong Pu, Almudena Veiga-Lopez
BACKGROUND: Although the 3T3-L1 preadipocyte cell line represents an informative model for in vitro adipogenesis research, primary cultured cells are often needed to understand particular human or animal metabolic phenotypes. As demonstrated by in vitro cultured preadipocytes from large mammalian species, primary cultured cells require specific adipogenic differentiation conditions different to that of the 3T3-L1 cell line. These conditions are also species-specific and require optimization steps...
2017: Cellular & Molecular Biology Letters
https://www.readbyqxmd.com/read/28532683/the-essential-oil-from-the-twigs-of-cinnamomum-cassia-presl-inhibits-oxytocin-induced-uterine-contraction-in-vitro-and-in-vivo
#6
Lan Sun, Li-Na Liu, Jia-Chun Li, Yao-Zhong Lv, Shao-Bo Zong, Jun Zhou, Zheng-Zhong Wang, Jun-Ping Kou, Wei Xiao
ETHNOPHARMACOLOGICAL RELEVANCE: The twigs and bark of Cinnamomum cassia Presl (Lauraceae) are widely used in traditional Chinese medicine in the treatment of tumor, abdominal pain, dysmenorrhea, digestive system disease and inflammatory diseases. The aim of this study was to determine the inhibitory effect of the essential oil from the twigs of Cinnamomum cassia Presl (EOCC) on uterine contraction in vitro and in vivo. MATERIALS AND METHODS: The Institute of Cancer Research (ICR) mouse uterine contraction was induced by oxytocin (OT) exposure following estradiol benzoate pretreatment...
May 19, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28532258/fumigant-and-repellent-activities-of-essential-oil-extracted-from-artemisia-dubia-and-its-main-compounds-against-two-stored-product-pests
#7
Jun-Yu Liang, Shan-Shan Guo, Wen-Juan Zhang, Zhu-Feng Geng, Zhi-Wei Deng, Shu-Shan Du, Ji Zhang
The major chemical constituents of the essential oil extracted from Artemisia dubia wall. ex Bess. (Family: Asteraceae) were found as terpinolene (19.02%), limonene (17.40%), 2,5-etheno[4.2.2]propella-3,7,9-triene (11.29%), isoelemicin (11.05%) and p-cymene-8-ol (5.93%). Terpinolene and limonene were separated as main components from the essential oil. The essential oil showed fumigant toxicity against Tribolium castaneum and Liposcelis bostrychophila with LC50 values of 49.54 and 0.74 mg/L, respectively. The essential oil and isolated compounds of A...
May 22, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28530570/enhanced-antimicrobial-activity-of-essential-oil-components-immobilized-on-silica-particles
#8
María Ruiz-Rico, Édgar Pérez-Esteve, Andrea Bernardos, Félix Sancenón, Ramón Martínez-Máñez, María D Marcos, José M Barat
The antimicrobial activity of essential oils components (EOCs) is well-known. However, their high volatility and powerful aroma limit their application in the formulation of a wide range of food products. In this context, the antimicrobial activity of carvacrol, eugenol, thymol and vanillin grafted onto the surface of three silica supports with different morphologies, textural properties and chemical reactivities (fumed silica, amorphous silica and MCM-41) was evaluated herein. Materials characterization revealed a good immobilization yield and all the devices showed a micro-scale particle size...
October 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28529531/the-protective-effect-of-lavender-essential-oil-and-its-main-component-linalool-against-the-cognitive-deficits-induced-by-d-galactose-and-aluminum-trichloride-in-mice
#9
Pan Xu, Kezhu Wang, Cong Lu, Liming Dong, Li Gao, Ming Yan, Silafu Aibai, Yanyan Yang, Xinmin Liu
Lavender essential oil (LO) is a traditional medicine used for the treatment of Alzheimer's disease (AD). It was extracted from Lavandula angustifolia Mill. This study was designed to investigate the effects of lavender essential oil (LO) and its active component, linalool (LI), against cognitive impairment induced by D-galactose (D-gal) and AlCl3 in mice and to explore the related mechanisms. Our results revealed that LO (100 mg/kg) or LI (100 mg/kg) significantly protected the cognitive impairments as assessed by the Morris water maze test and step-though test...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28528251/biological-activity-and-safety-profile-of-the-essential-oil-from-fruits-of-heracleum-mantegazzianum-sommier-levier-apiaceae
#10
Krystyna Skalicka-Woźniak, Agnieszka Grzegorczyk, Łukasz Świątek, Magdalena Walasek, Jarosław Widelski, Barbara Rajtar, Małgorzata Polz-Dacewicz, Anna Malm, Hosam O Elansary
A composition of essential oils obtained from Heracleum mantegazzianum (Apiaceae) was examined using a GC-MS method. n-Octyl acetate (19.92%), n-hexyl-2-methylbutanoate (10.84%), n-octanol (10.13%), n-octyl butanoate (8.88%), n-octyl-2-methylbutanoate (8.01%), n-hexyl acetate (7.11%), n-octyl isobutanoate (5.5%) and n-hexyl isobutanoate (5.43%) were the main compounds. The high-performance counter-current chromatography was applied for purification of aliphatic alcohols and esters. A mixture of n-hexane, acetonitrile and tetr-butyl methyl ether (1:1:0...
May 17, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28528094/encapsulated-thyme-thymus-vulgaris-essential-oil-used-as-a-natural-preservative-in-bakery-product
#11
Nathalia Dias Gonçalves, Fabíola de Lima Pena, Adilson Sartoratto, Camila Derlamelina, Marta Cristina Teixeira Duarte, Adriane Elisabete Costa Antunes, Ana Silvia Prata
The objective of this work was to design a particle using thyme (Thymus vulgaris) essential oil through complex coacervation. In vitro activity against bacteria and molds of free oil as well as the encapsulated oil was verified and then in situ assay was done. The free thyme oil presented high in vitro activity, with values below 0.50mg/mL for almost all the microorganisms tested. Also, MIC values for the encapsulated oil was lower than for the free oil, probably due to the protective micro-environment promoted by the particle wall...
June 2017: Food Research International
https://www.readbyqxmd.com/read/28527112/inhalation-of-roman-chamomile-essential-oil-attenuates-depressive-like-behaviors-in-wistar-kyoto-rats
#12
Yingying Kong, Ting Wang, Rong Wang, Yichuan Ma, Shanshan Song, Juan Liu, Weiwei Hu, Shengtian Li
The idea of aromatherapy, using essential oils, has been considered as an alternative antidepressant treatment. In the present study, we investigated the effect of Roman chamomile essential oil inhalation for two weeks on depressive-like behaviors in Wistar-Kyoto (WKY) rats. We found that inhalation of either Roman chamomile or one of its main components α-pinene, attenuated depressive-like behavior in WKY rats in the forced swim test. Using isobaric tags for relative and absolute quantitation analysis (iTRAQ), we found that inhalation of α-pinene increased expression of proteins that are involved in oxidative phosphorylation, such as cytochrome c oxidase subunit 6C-2, cytochrome c oxidase subunit 7A2, ATPase inhibitor in the hippocampus, and cytochrome c oxidase subunit 6C-2, ATP synthase subunit e, Acyl carrier protein, and Cytochrome b-c1 complex subunit 6 in the PFC (prefrontal cortex)...
May 16, 2017: Science China. Life Sciences
https://www.readbyqxmd.com/read/28526637/identification-and-biological-activity-of-the-volatile-compounds-of-glycyrrhiza-triphylla-fisch-c-a-mey
#13
Abolfazl Shakeri, Javad Akhtari, Vahid Soheili, Seyedeh Faezeh Taghizadeh, Amirhossein Sahebkar, Rezvan Shaddel, Javad Asili
Chemical composition and biological (antimicrobial, antioxidant and cytotoxic) activities of essential oils (EO) obtained from the aerial parts of Glycyrrhiza triphylla Fisch. & C.A.Mey (G. triphylla) were evaluated in the present study. The EO was isolated and analyzed using gas chromatography-mass spectrometry (GC-MS). Fifty-five compounds representing 99.3% of the total oil composition were identified. Major components of the oil were β-caryophyllene (25.4%), limonene (16.7%), β-myrcene (16.0%) and α-humulene (4...
May 16, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28526346/release-study-and-inhibitory-activity-of-thyme-essential-oil-loaded-chitosan-nanoparticles-and-nanocapsules-against-foodborne-bacteria
#14
M Sotelo-Boyás, Z Correa-Pacheco, S Bautista-Baños, Y Gómez Y Gómez
The antibacterial property of thyme essential oil due to different volatile compounds, has been well documented in the literature. To overcome the high volatility of essential oil components, encapsulation has emerged as a new alternative. In this work, chitosan and thyme essential oil-loaded chitosan nanoparticles (TEO-CSNPs) and nanocapsules (TEO-CSNCs) were prepared by nanoprecipitation and nanoencapsulation, respectively. The morphology, encapsulation efficiency, release kinetics, and inhibitory activity were evaluated...
May 16, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28526050/dbcamp-regulates-adipogenesis-in-sheep-inguinal-preadipocytes
#15
Delin Kong, Jingjing Cui, Juncai Fu
BACKGROUND: The cyclic adenosine-monophosphate (cAMP) pathway is generally recognized as one of the essential pathways for the adipose conversion of rodent preadipocytes in vitro. However, divergent effects of cAMP on adipocyte differentiation have also been reported. Since there is very little data on non-rodent preadipose cells, the aim of the present work was to analyze the effects of one classic activator (dbcAMP) of the cAMP pathway on the proliferation and differentiation of sheep preadipocytes grown...
May 19, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28525862/application-of-nirs-coupled-with-pls-regression-as-a-rapid-non-destructive-alternative-method-for-quantification-of-kba-in-boswellia-sacra
#16
Ahmed Al-Harrasi, Najeeb Ur Rehman, Fazal Mabood, Muhammaed Albroumi, Liaqat Ali, Javid Hussain, Hidayat Hussain, René Csuk, Abdul Latif Khan, Tanveer Alam, Saif Alameri
In the present study, for the first time, NIR spectroscopy coupled with PLS regression as a rapid and alternative method was developed to quantify the amount of Keto-β-Boswellic Acid (KBA) in different plant parts of Boswellia sacra and the resin exudates of the trunk. NIR spectroscopy was used for the measurement of KBA standards and B. sacra samples in absorption mode in the wavelength range from 700-2500nm. PLS regression model was built from the obtained spectral data using 70% of KBA standards (training set) in the range from 0...
May 10, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28525761/impact-of-bioactive-packaging-systems-based-on-evoh-films-and-essential-oils-in-the-control-of-aflatoxigenic-fungi-and-aflatoxin-production-in-maize
#17
Eva M Mateo, José V Gómez, Irene Domínguez, Jose V Gimeno-Adelantado, Rufino Mateo-Castro, Rafael Gavara, Misericordia Jiménez
Aspergillus flavus and A. parasiticus are the most common fungal species associated with aflatoxin (AF) contamination of cereals, especially maize, and other agricultural commodities. AFB1, the most frequent and toxic metabolite, is a powerful hepatotoxic, teratogenic and mutagenic compound. Effective strategies to control these fungal species and AFs in food and feed are required. Active packaging film containing essential oils (EO) is one of the most innovative food packaging concepts. In this study, ethylene-vinyl alcohol (EVOH) copolymer films incorporating EO from Origanum vulgare (ORE), Cinnamomum zeylanicum (CIN) or their major active constituents, carvacrol (CAR) and cinnamaldehyde (CINHO), respectively, were developed and assayed to control growth of A...
May 11, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/28524091/chemical-diversity-biological-activity-and-genetic-aspects-of-three-ocotea-species-from-the-amazon
#18
Joyce Kelly da Silva, Rafaela da Trindade, Edith Cibelle Moreira, José Guilherme S Maia, Noura S Dosoky, Rebecca S Miller, Leland J Cseke, William N Setzer
Ocotea species present economic importance and biological activities attributed to their essential oils (EOs) and extracts. For this reason, various strategies have been developed for their conservation. The chemical compositions of the essential oils and matK DNA sequences of O. caudata, O. cujumary, and O. caniculata were subjected to comparison with data from O. floribunda, O. veraguensis, and O. whitei, previously reported. The multivariate analysis of chemical composition classified the EOs into two main clusters...
May 18, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28520791/toxic-and-hormetic-like-effects-of-three-components-of-citrus-essential-oils-on-adult-mediterranean-fruit-flies-ceratitis-capitata
#19
Stella A Papanastasiou, Eleftheria-Maria D Bali, Charalampos S Ioannou, Dimitrios P Papachristos, Kostas D Zarpas, Nikos T Papadopoulos
Plant essential oils (EOs) and a wide range of their individual components are involved in a variety of biological interactions with insect pests including stimulatory, deterrent, toxic and even hormetic effects. Both the beneficial and toxic properties of citrus EOs on the Mediterranean fruit fly (medfly) have been experimentally evidenced over the last years. However, no information is available regarding the toxic or beneficial effects of the major components of citrus EOs via contact with the adults of the Mediterranean fruit fly...
2017: PloS One
https://www.readbyqxmd.com/read/28518102/nmr-spectroscopy-as-a-robust-tool-for-the-rapid-evaluation-of-the-lipid-profile-of-fish-oil-supplements
#20
Kathryn Williamson, Emmanuel Hatzakis
The western diet is poor in n-3 fatty acids, therefore the consumption of fish oil supplements is recommended to increase the intake of these essential nutrients. The objective of this work is to demonstrate the qualitative and quantitative analysis of encapsulated fish oil supplements using high-resolution (1)H and (13)C NMR spectroscopy utilizing two different NMR instruments; a 500 MHz and an 850 MHz instrument. Both proton ((1)H) and carbon ((13)C) NMR spectra can be used for the quantitative determination of the major constituents of fish oil supplements...
May 1, 2017: Journal of Visualized Experiments: JoVE
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