keyword
MENU ▼
Read by QxMD icon Read
search

oregano oil

keyword
https://www.readbyqxmd.com/read/29031968/pyrolysis-gas-chromatography-isotope-ratio-mass-spectrometry-for-monitoring-natural-additives-in-polylactic-acid-active-food-packages
#1
M Llana-Ruíz-Cabello, S Pichardo, N T Jiménez-Morillo, F J González-Vila, E Guillamón, J M Bermúdez, S Aucejo, A M Camean, J A González-Pérez
Compound-specific isotope analysis (CSIA) usually requires preparative steps (pretreatments, extraction, derivatization) to get amenable chromatographic analytes from bulk geological, biological or synthetic materials. Analytical pyrolysis (Py-GC/MS) can help to overcome such sample manipulation. This communication describe the results obtained by hyphenating analytical pyrolysis (Py-GC) with carbon isotope-ratio mass spectrometry (IRMS) for the analysis of a polylactic acid (PLA) a based bio-plastic extruded with variable quantities of a natural plant extract or oregano essential oil...
October 8, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/29030881/effects-of-dietary-greek-oregano-origanum-vulgare-ssp-hirtum-supplementation-on-rumen-fermentation-enzyme-profile-and-microbial-communities-in-goats
#2
N Paraskevakis
This study was conducted to examine in vivo long-term effects of dietary dried oregano (Origanum vulgare ssp. hirtum) whole plant on rumen fermentation, enzyme profile and microbial communities. For this purpose, eight healthy, adult, non-lactating Alpine goats were kept in tie stalls equipped for individual feeding and randomly divided into two homogeneous groups: one fed 0.6 kg of a concentrate mixture and 0.6 kg of wheat straw without any supplementation and served as control group (CON) while the other group (OR) fed the same diet of CON but supplemented with 20 g of dried oregano plants (OPs) to provide daily dosage of 1 ml of essential oil (EO) per animal...
October 14, 2017: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/29029151/combined-toxicity-of-three-essential-oils-against-aedes-aegypti-diptera-culicidae-larvae
#3
Ephantus J Muturi, Jose L Ramirez, Kenneth M Doll, Michael J Bowman
Essential oils are potential alternatives to synthetic insecticides because they have low mammalian toxicity, degrade rapidly in the environment, and possess complex mixtures of bioactive constituents with multi-modal activity against the target insect populations. Twenty-one essential oils were initially screened for their toxicity against Aedes aegypti (L.) larvae and three out of the seven most toxic essential oils (Manuka, oregano, and clove bud essential oils) were examined for their chemical composition and combined toxicity against Ae...
October 4, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28990669/effect-of-thyme-oil-alginate-based-coating-on-quality-and-microbial-safety-of-fresh-cut-apples
#4
Sarengaowa, Wenzhong Hu, Aili Jiang, Zhilong Xiu, Ke Feng
BACKGROUND: Food preservation is critical for keeping fresh-cut products fresh, nutritious, safe, attractive and available for consumers. To improve the safety and quality of fresh-cut fruits, fifteen essential oils (EOs) were screened to test the antimicrobial activity against Listeria monocytogenes (LM), Salmonella typhimurium (ST), Staphylococcus aureus (SA) and Escherichia coli O157:H7 (EC O157:H7). The effect of alginate-based edible coating (EC) incorporating with different concentrations thyme oil on fresh-cut Red Fuji apples was investigated...
October 9, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28980415/carvacrol-rich-oregano-oil-and-thymol-rich-thyme-red-oil-inhibit-biofilm-formation-and-the-virulence-of-uropathogenic-escherichia-coli
#5
Jin-Hyung Lee, Yong-Guy Kim, Jintae Lee
AIMS: Urinary tract infections are caused primarily by uropathogenic Escherichia coli (UPEC), and indwelling catheters are usually colonized by UPEC biofilms tolerant to common antibiotics. Hence, UPEC biofilms pose a substantial challenge, and there is an urgent need for effective control strategies. METHODS AND RESULTS: In this study, 79 essential oils were screened for antibiofilm ability against UPEC. Components of active oils were identified, and their antibiofilm activities were also investigated using 96-well plates with crystal violet assay, scanning electron microscopy, and confocal laser scanning microscopy...
October 5, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28969843/toxic-and-repellent-activity-of-selected-monoterpenoids-thymol-carvacrol-and-linalool-against-the-castor-bean-tick-ixodes-ricinus-acari-ixodidae
#6
Mohaddeseh Abouhosseini Tabari, Mohammad Reza Youssefi, Filippo Maggi, Giovanni Benelli
The castor bean tick, Ixodes ricinus, is a species of medical and veterinary importance. The use of synthetic acaricides for tick control has led to development of resistance, residues in the environment and animal products, and public health concerns. In this regard, plant essential oils and their main constituents represent an appealing alternative strategy to combat ticks. The phenols thymol and carvacrol and the alcohol linalool are monoterpenoids occurring in essential oils of several aromatic and medicinal plants, such as thyme, oregano, savory, lavender and coriander...
October 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28952553/encapsulation-of-oregano-origanum-onites-l-essential-oil-in-%C3%AE-cyclodextrin-%C3%AE-cd-synthesis-and-characterization-of-the-inclusion-complexes
#7
Margarita Kotronia, Eleni Kavetsou, Sofia Loupassaki, Stefanos Kikionis, Stamatina Vouyiouka, Anastasia Detsi
The aim of the present work was to study the encapsulation of Origanum onites L. essential oil (oregano EO) in β-cyclodextrin (β-CD) inclusion complexes (ICs), using the co-precipitation method. The formed β-CD-oregano EO ICs were characterized by diverse methods, such as Dynamic Light Scattering (DLS), FT-IR spectroscopy, Differential Scanning Calorimetry (DSC), Thermogravimetric Analysis (TGA), Nuclear Magnetic Resonance (NMR) spectroscopy and Scanning Electron Microscopy (SEM). UV-Vis spectroscopy was used for the determination of the inclusion efficacy and the study of the encapsulated oregano EO release profile...
September 9, 2017: Bioengineering
https://www.readbyqxmd.com/read/28930236/antibacterial-and-antifungal-activity-of-essential-oils-against-pathogens-responsible-for-otitis-externa-in-dogs-and-cats
#8
Valentina V Ebani, Simona Nardoni, Fabrizio Bertelloni, Basma Najar, Luisa Pistelli, Francesca Mancianti
Background: Essential oils (EOs) are recommended by some veterinarians to treat otitis externa in pets, but data about their efficacy in scientific literature are very scant. Methods: Nine commercial EOs, from roman chamomile (Anthemis nobilis L.), star anise (Illicium verum), lavender (Lavandula hybrida), litsea (Litsea cubeba (Lour.) Pers.), basil (Ocimum basilicum L.), oregano (Origanum vulgare L. subsp. hirticum), rosemary (Rosmarinus officinalis L.), clary sage (Salvia sclarea L.), and thyme (Thymus vulgaris L...
April 21, 2017: Medicines (Basel, Switzerland)
https://www.readbyqxmd.com/read/28867805/cytotoxic-activity-of-origanum-vulgare-l-on-hepatocellular-carcinoma-cell-line-hepg2-and-evaluation-of-its-biological-activity
#9
Hazem S Elshafie, Maria F Armentano, Monica Carmosino, Sabino A Bufo, Vincenzo De Feo, Ippolito Camele
The potential of plant essential oils (EOs) in anticancer treatment has recently received many research efforts to overcome the development of multidrug resistance and their negative side effects. The aims of the current research are to study (i) the cytotoxic effect of the crude EO extracted from Origanum vulgare subsp hirtum and its main constituents (carvacrol, thymol, citral and limonene) on hepatocarcinoma HepG2 and healthy human renal cells HEK293; (ii) the antibacterial and phytotoxic activities of the above EO and its main constituents...
August 30, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28859691/effect-of-oregano-essential-oil-and-benzoic-acid-supplementation-to-a-low-protein-diet-on-meat-quality-fatty-acid-composition-and-lipid-stability-of-longissimus-thoracis-muscle-in-pigs
#10
Chuanshang Cheng, Xiaming Zhang, Mao Xia, Zuhong Liu, Hongkui Wei, Zhao Deng, Chao Wang, Siwen Jiang, Jian Peng
BACKGROUND: Consumers are becoming increasingly interested in food containing appropriately high concentration of intramuscular fat (IMF) and polyunsaturated fatty acids (PUFA). The supplementation of feed with antioxidants decreases degradation of lipids in muscles thereby enhances nutritional and sensory properties of meat. Two experiments were conducted to determine the effects of adding oregano essential oil (OEO) and benzoic acid (BA) to low-protein, amino acid-supplemented diets on meat quality, sensory profile, fatty acid composition, and lipid oxidation of longissimus thoracis (LT) muscle in pigs...
August 31, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28841125/spectroscopy-applied-to-feed-additives-of-the-european-union-reference-laboratory-a-valuable-tool-for-traceability
#11
Jone Omar, Boleslaw Slowikowski, Ana Boix, Christoph von Holst
Feed additives need to be authorised to be placed on the market according to Regulation (EU) No. 1831/2003. Next to laying down the procedural requirements, the regulation creates the European Union Reference Laboratory for Feed Additives (EURL-FA) and requires that applicants send samples to the EURL-FA. Once authorised, the characteristics of the marketed feed additives should correspond to those deposited in the sample bank of the EURL-FA. For this purpose, the submitted samples were subjected to near-infrared (NIR) and Raman spectroscopy for spectral characterisation...
August 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28837070/mechanisms-of-antimicrobial-action-of-cinnamon-and-oregano-oils-cinnamaldehyde-carvacrol-2-5-dihydroxybenzaldehyde-and-2-hydroxy-5-methoxybenzaldehyde-against-mycobacterium-avium-subsp-paratuberculosis-map
#12
Stella W Nowotarska, Krzysztof Nowotarski, Irene R Grant, Christopher T Elliott, Mendel Friedman, Chen Situ
The antimicrobial modes of action of six naturally occurring compounds, cinnamon oil, cinnamaldehyde, oregano oil, carvacrol, 2,5-dihydroxybenzaldehyde, and 2-hydroxy-5-methoxybenzaldehyde, previously found to inhibit the growth of Mycobacterium avium subsp. paratuberculosis (Map) reported to infect food animals and humans and to be present in milk, cheese, and meat, were investigated. The incubation of Map cultures in the presence of all six compounds caused phosphate ions to leak into the extracellular environment in a time- and concentration-dependent manner...
August 24, 2017: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28811611/the-antibacterial-and-antifungal-activity-of-six-essential-oils-and-their-cyto-genotoxicity-to-human-hel-12469-cells
#13
Andrea Puškárová, Mária Bučková, Lucia Kraková, Domenico Pangallo, Katarína Kozics
Six essential oils (from oregano, thyme, clove, lavender, clary sage, and arborvitae) exhibited different antibacterial and antifungal properties. Antimicrobial activity was shown against pathogenic (Escherichia coli, Salmonella typhimurium, Yersinia enterocolitica, Staphylococcus aureus, Listeria monocytogenes, and Enterococcus faecalis) and environmental bacteria (Bacillus cereus, Arthrobacter protophormiae, Pseudomonas fragi) and fungi (Chaetomium globosum, Penicillium chrysogenum, Cladosporium cladosporoides, Alternaria alternata, and Aspergillus fumigatus)...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28762217/acute-toxicity-and-sublethal-effects-of-terpenoids-and-essential-oils-on-the-predator-chrysoperla-externa-neuroptera-chrysopidae
#14
R V Castilhos, A D Grützmacher, J R Coats
The search for new safer insecticides has increased in recent agriculture. Botanical compounds such as terpenoids and plant essential oils with insecticidal activity could represent important tools in pest management, and their risk assessment against non-target organisms is necessary since they may serve as a precursor for the synthesis of new insecticide active ingredients. For this study, the acute toxicity and sublethal effects of seven terpenoids and three essential oils with recognized insecticidal activity were evaluated on the predator Chrysoperla externa (Hagen) (Neuroptera: Chrysopidae) in laboratory bioassays...
July 31, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/28748336/continuous-release-of-oregano-oil-effectively-and-safely-controls-varroa-destructor-infestations-in-honey-bee-colonies-in-a-northern-climate
#15
Qodratollah Sabahi, Hanan Gashout, Paul G Kelly, Ernesto Guzman-Novoa
The ectoparasitic mite Varroa destructor is responsible for the death of millions of honey bee (Apis mellifera) colonies worldwide. Testing potential miticide compounds with different delivery methods that effectively control V. destructor and have low toxicity for honey bees is crucial to manage this parasite in hives. We determined the varroacide efficacy of three natural compounds delivered to hives with three application methods over a 4-week period. Oxalic acid in a sucrose solution was applied impregnated in cardboard (T1)...
July 2017: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/28722406/possible-molecular-mechanisms-by-which-an-essential-oil-blend-from-star-anise-rosemary-thyme-and-oregano-and-saponins-increase-the-performance-and-ileal-protein-digestibility-of-growing-broilers
#16
Henry Reyer, Jürgen Zentek, Klaus Männer, Ibrahim M I Youssef, Tobias Aumiller, Julian Weghuber, Klaus Wimmers, Andreas S Mueller
Phytogenic feed additives represent a potential alternative to antibiotics with attributed health and growth-promoting effects. Chickens supplemented with an essential oil blend, a Quillaja saponin blend, or a combination of both phytogenic preparations showed a comprehensively and significantly improved apparent ileal digestibility of crude protein and amino acids compared to control birds. Accordingly, holistic transcriptomic analyses of jejunum and liver samples indicated alterations of macromolecule transporters and processing pathways likely culminating in an increased uptake and metabolizing of carbohydrates and fatty acids...
August 16, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28687391/using-a-bacterial-fucose-rich-polysaccharide-as-encapsulation-material-of-bioactive-compounds
#17
Sofia C Lourenço, Cristiana A V Torres, Daniela Nunes, Paulo Duarte, Filomena Freitas, Maria A M Reis, Elvira Fortunato, Margarida Moldão-Martins, Luísa Beirão da Costa, Vítor D Alves
The potential of a bacterial exopolysaccharide named FucoPol, produced by the bacterium Enterobacter A47, as encapsulation matrix was explored. Spherical capsules with a smooth surface were produced by spray drying. The obtained microcapsules had average diameters ranging from 0.5 to 26.7μm and presented thin walls (thickness from 222 to 1094nm). The capsules were loaded with two bioactive compounds: gallic acid (GA) and oregano essential oil (OEO). Both bioactive materials were encapsulated in FucoPol particles, retaining their antioxidant activity after the drying process...
November 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28683217/combination-of-antimicrobials-and-essential-oils-as-an-alternative-for-the-control-of-salmonella-enterica-multiresistant-strains-related-to-foodborne-disease
#18
Ana Lucía Solarte, Rafael Jesús Astorga, Fabiana Aguiar, Ángela Galán-Relaño, Alfonso Maldonado, Belén Huerta
Due to the increase in bacterial resistance to antimicrobials (AMBs) commonly used in veterinary and human medicine, the new strategies for controlling zoonoses focus on the study of natural products with demonstrated AMB activity, such as essential oils (EOs). The aim of this study was to evaluate the in vitro effect of the combination of enrofloxacin (ENR), ceftiofur (CEF), and trimethoprim-sulfamethoxazole (SXT) with cinnamon, clove, oregano, and red thyme EOs against multiple drug-resistant strains of Salmonella enterica...
October 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28675464/chemical-composition-antimicrobial-and-insecticidal-activity-against-the-lesser-mealworm-alphitobius-diaperinus-panzer-coleoptera-tenebrionidae-of-origanum-vulgare-l-ssp-hirtum-link-and-artemisia-dracunculus-l-essential-oils
#19
Maria Szczepanik, Maciej Walczak, Beata Zawitowska, Marta Michalska-Sionkowska, Antoni Szumny, Czesław Wawrzeńczyk, Maria Swiontek Brzezinska
BACKGROUND: Essential oils (EOs) from Artemisia dracunculus L. and Origanum vulgare L. ssp. hirtum were obtained and the qualitative and quantitative chemical composition of the extracts was investigated. The insecticidal activity of EOs against the larval stages of Alphitobius diaperinus (Panzer) was studied. Moreover, the antimicrobial activity of these oils against pathogens transmitted by this pest was also investigated. RESULTS: The obtained results indicate the possibility of using Greek oregano EO with a high content of carvacrol as a feed additive in poultry nutrition...
July 4, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28666108/effect-of-oregano-essential-oil-supplementation-to-a-reduced-protein-amino-acid-supplemented-diet-on-meat-quality-fatty-acid-composition-and-oxidative-stability-of-longissimus-thoracis-muscle-in-growing-finishing-pigs
#20
Chuanshang Cheng, Zuhong Liu, Yuanfei Zhou, Hongkui Wei, Xiaming Zhang, Mao Xia, Zhao Deng, Yi Zou, Siwen Jiang, Jian Peng
This study investigated the effects of reduced-protein, amino acid-supplemented diet supplementation with oregano essential oil (OEO) in pigs, from growing period to slaughter, on the meat quality, fatty acid composition, and oxidative stability of Longissimus thoracis (LT) muscle. Thirty-six barrows were randomly divided into three experimental treatments, namely, normal protein diet (NPD), reduced-protein, amino acid-supplemented diet (RPD), and identical RPD supplemented (250mg/kg feed) with OEO (OEO) treatments...
June 23, 2017: Meat Science
keyword
keyword
48436
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"