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https://www.readbyqxmd.com/read/28930236/antibacterial-and-antifungal-activity-of-essential-oils-against-pathogens-responsible-for-otitis-externa-in-dogs-and-cats
#1
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/28910141/rapid-screening-of-natural-plant-extracts-with-calcium-diacetate-for-differential-effects-against-foodborne-pathogens-and-a-probiotic-bacterium
#2
William Colonna, Byron Brehm-Stecher, Kalidas Shetty, Anthony Pometto Iii
This study focused on advancing a rapid turbidimetric bioassay to screen antimicrobials using specific cocktails of targeted foodborne bacterial pathogens. Specifically, to show the relevance of this rapid screening tool, the antimicrobial potential of generally recognized as safe calcium diacetate (DAX) and blends with cranberry (NC) and oregano (OX) natural extracts was evaluated. Furthermore, the same extracts were evaluated against beneficial lactic acid bacteria. The targeted foodborne pathogens evaluated were Escherichia coli O157:H7, Salmonella spp...
September 14, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28885049/effect-of-plant-antimicrobial-agents-containing-marinades-on-storage-stability-and-microbiological-quality-of-broiler-chicken-cuts-packed-with-modified-atmosphere-packaging
#3
H-L Alakomi, J Maukonen, K Honkapää, E Storgårds, K-W Quirin, B Yang, M Saarela
The food industry, including the meat industry, is currently looking for natural preservatives to prevent the growth of harmful microbes in foods. The potential of plant-derived antimicrobial extracts to increase the shelf life and to delay the microbiological spoilage of marinated broiler chicken cuts in modified atmosphere packages during cold storage was investigated in this study. We evaluated the impact of aqueous ethanolic extracts of Finnish sea buckthorn berries and lingonberries and supercritical CO2-extracted herbal extracts from an antimicrobial blend and oregano leaves on the shelf life of broiler meat...
September 8, 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28873575/development-of-a-comprehensive-analytical-platform-for-the-detection-and-quantitation-of-food-fraud-using-a-biomarker-approach-the-oregano-adulteration-case-study
#4
Ewa Wielogorska, Olivier Chevallier, Connor Black, Pamela Galvin-King, Marc Delêtre, Colin T Kelleher, Simon A Haughey, Christopher T Elliott
Due to increasing number of food fraud incidents, there is an inherent need for the development and implementation of analytical platforms enabling detection and quantitation of adulteration. In this study a set of unique biomarkers of commonly found oregano adulterants became the targets in the development of a LC-MS/MS method which underwent a rigorous in-house validation. The method presented very high selectivity and specificity, excellent linearity (R(2)>0.988) low decision limits and detection capabilities (<2%), acceptable accuracy (intra-assay 92-113%, inter-assay 69-138%) and precision (CV<20%)...
January 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/28867805/cytotoxic-activity-of-origanum-vulgare-l-on-hepatocellular-carcinoma-cell-line-hepg2-and-evaluation-of-its-biological-activity
#5
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
#6
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
#7
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
#8
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/28813148/chitosan-coated-cinnamon-oregano-loaded-solid-lipid-nanoparticles-to-augment-5-fluorouracil-cytotoxicity-for-colorectal-cancer-extract-standardization-nanoparticle-optimization-and-cytotoxicity-evaluation
#9
Kamel M Kamel, Islam A Khalil, Mostafa E Rateb, Hosieny Elgendy, Seham Elhawary
This study aimed to coat lipid-based nanocarriers with chitosan to encapsulate nutraceuticals, minimize opsonization, and facilitate passive-targeting. Phase one was concerned with standardization according to the World Health Organization. Qualitative analysis using liquid chromatography-high-resolution mass spectrometry (LC-HRMS/MS) investigated the active constituents, especially reported cytotoxic agents. Cinnamaldehyde and rosmarinic acid were selected to be quantified using high-performance liquid chromatography...
August 29, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28811611/the-antibacterial-and-antifungal-activity-of-six-essential-oils-and-their-cyto-genotoxicity-to-human-hel-12469-cells
#10
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
#11
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/28758285/effect-of-ozone-on-the-microbiological-status-of-five-dried-aromatic-plants
#12
Martha Kazi, Foteini F Parlapani, Ioannis S Boziaris, Evangelos K Vellios, Christos Lykas
BACKGROUND: Aromatic plants may be contaminated with a wide range of microorganisms making them a potential health hazard when infused or added in ready-to-eat meals. To ensure safety, the effect of gaseous ozone treatment on the population of aerobic plate counts (APC), hygienic indicators (Escherichia coli, Enterococcus spp. and Enterobacteriaceae) and fungi was investigated for five dried aromatic plants; i.e. oregano, thyme, mountain tea, lemon verbena and chamomile. Selection, isolation, and further fungi identification were based on the phenotypic and macro and microscopic characteristics...
July 31, 2017: Journal of the Science of Food and Agriculture
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
#13
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
#14
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
#15
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
#16
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...
July 6, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28678344/prebiotic-potential-and-chemical-composition-of-seven-culinary-spice-extracts
#17
Qing-Yi Lu, Paula H Summanen, Ru-Po Lee, Jianjun Huang, Susanne M Henning, David Heber, Sydney M Finegold, Zhaoping Li
The objective of this study was to investigate prebiotic potential, chemical composition, and antioxidant capacity of spice extracts. Seven culinary spices including black pepper, cayenne pepper, cinnamon, ginger, Mediterranean oregano, rosemary, and turmeric were extracted with boiling water. Major chemical constituents were characterized by RP-HPLC-DAD method and antioxidant capacity was determined by measuring colorimetrically the extent to scavenge ABTS radical cations. Effects of spice extracts on the viability of 88 anaerobic and facultative isolates from intestinal microbiota were determined by using Brucella agar plates containing serial dilutions of extracts...
July 5, 2017: Journal of Food Science
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
#18
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
#19
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
https://www.readbyqxmd.com/read/28654923/antibakterielle-in-vitro-wirksamkeit-%C3%A3-therischer-%C3%A3-le-gegen-veterin%C3%A3-rmedizinisch-relevante-keime-klinischer-isolate-von-hunden-katzen-und-pferden
#20
Doris Bismarck, Marianne Schneider, Elisabeth Müller
Einleitung: Ätherische Öle sind die Grundlage der Aromatherapie. Unter anderem wird ihnen eine antibakterielle Wirkung zugeschrieben. In dieser Studie sollte die In-vitro-Wirksamkeit ätherischer Öle gegen ein breites Spektrum veterinärmedizinisch relevanter Erreger getestet werden. Methoden: Die antibakterielle Aktivität von 16 ätherischen Ölen wurde mittels Agardiffusionstest bestimmt. Getestet wurden grampositive und gramnegative Erreger, die aus klinischen Isolaten von Hunden, Katzen und Pferden aus der veterinärmedizinischen Routinediagnostik stammten...
2017: Complementary Medicine Research
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