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https://www.readbyqxmd.com/read/28071000/chemical-composition-and-antioxidant-activities-of-essential-oils-from-different-parts-of-the-oregano
#1
Fei Han, Guang-Qiang Ma, Ming Yang, Li Yan, Wei Xiong, Ji-Cheng Shu, Zhi-Dong Zhao, Han-Lin Xu
This research was undertaken in order to characterize the chemical compositions and evaluate the antioxidant activities of essential oils obtained from different parts of the Origanum vulgare L. It is a medicinal plant used in traditional Chinese medicine for the treatment of heat stroke, fever, vomiting, acute gastroenteritis, and respiratory disorders. The chemical compositions of the three essential oils from different parts of the oregano (leaves-flowers, stems, and roots) were identified by gas chromatography-mass spectrometry (GC-MS)...
2017: Journal of Zhejiang University. Science. B
https://www.readbyqxmd.com/read/28067421/dietary-integration-with-oregano-origanum-vulgare-l-essential-oil-improves-growth-rate-and-oxidative-status-in-outdoor-reared-but-not-indoor-reared-pigs
#2
C Forte, D Ranucci, D Beghelli, R Branciari, G Acuti, L Todini, C Cavallucci, M Trabalza-Marinucci
The effects of a diet supplemented with oregano essential oil on performance, oxidative status, pork quality traits and sensorial properties were evaluated. In two studies, 72 pigs in indoor or outdoor conditions were assigned to either a control diet or an identical diet supplemented with 0.2% oregano essential oil. Pigs reared outdoor showed lower live weight, average daily gain and average gain:feed ratio compared to indoor pigs. The oregano supplementation improved the growth performance of the outdoor- but not the indoor-reared animals...
January 9, 2017: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/28065759/a-subchronic-90-day-oral-toxicity-study-of-origanum-vulgare-essential-oil-in-rats
#3
M Llana-Ruiz-Cabello, S Maisanaba, M Puerto, S Pichardo, A Jos, R Moyano, A M Cameán
Oregano essential oil (Origanum vulgare L. virens) (OEO) is being used in the food industry due to its useful properties to develop new active packaging systems. In this concern, the safety assessment of this natural extract is of great interest before being commercialized. The European Food Safety Authority requests different in vivo assays to ensure the safety of food contact materials. One of these studies is a 90 days repeated-dose oral assay in rodents. In the present work, 40 male and 40 female Wistar rats were orally exposed to 50, 100 and 200 mg/kg body weight (b...
January 5, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28039793/lippia-graveolens-photochemopreventive-effect-against-uvb-radiation-induced-skin-carcinogenesis
#4
A M García-Bores, A M Espinosa-González, A Reyna-Campos, S Cruz-Toscano, J C Benítez-Flores, C T Hernández-Delgado, S Flores-Maya, M Urzúa-Meza, I Peñalosa-Castro, C L Céspedes-Acuña, J G Avila-Acevedo
Lippia graveolens HBK (Mexican oregano) is a species that is regularly used as a condiment in Mexican cuisine. In traditional medicine, it is used for the treatment of respiratory and digestive illnesses, headaches, rheumatism and inflammation-related disorders. The main chemical components reported in this species include the following: terpenoids, iridoids and flavonoids. The aim of this study was to determine the potential photochemopreventive effect of the methanolic extract of Lippia graveolens (MELG) against ultraviolet B (UVB)-induced skin cancer in SKH-1 mice...
December 18, 2016: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28032105/evaluation-of-some-plant-essential-oils-against-the-brown-banded-cockroach-supella-longipalpa-blattaria-ectobiidae-a-mechanical-vector-of-human-pathogens
#5
Mona Sharififard, Farhad Safdari, Amir Siahpoush, Hamid Kassiri
BACKGROUND: Essential oils, as secondary plant compounds, present a safer alternative to conventional insecticides in insect control programs. So five essential oils including eucalyptus, mint, yarrow, oregano and rosemary oils were evaluated against the brown-banded cockroach Supella longipalpa. METHODS: Evaluation was done against the 3(rd) and 4(th) instar nymphs using three bioassay methods; continuous contact toxicity, fumigant toxicity and repellent activity...
December 2016: Journal of Arthropod-borne Diseases
https://www.readbyqxmd.com/read/28024521/a-novel-interpretation-of-the-fractional-inhibitory-concentration-index-the-case-origanum-vulgare-l-and-leptospermum-scoparium-j-r-et-g-forst-essential-oils-against-staphylococcus-aureus-strains
#6
Filippo Fratini, Simone Mancini, Barbara Turchi, Elisabetta Friscia, Luisa Pistelli, Giulia Giusti, Domenico Cerri
Origanum vulgare (oregano) and Leptospermum scoparium (manuka) were traditionally employed as natural remedies for infected wounds and skin injuries where Staphylococcus aureus is mainly involved. The first aim of this study was to investigate oregano and manuka essential oils (EOs) chemical compositions and evaluate their antibacterial activity (MIC, Minimum Inhibitory Concentration) against fourteen S. aureus wild strains. The second aim was to evaluate the antibacterial activities of oregano and manuka EOs mixed in different combination (FIC, Fractional Inhibitory Concentration) with an improved chequerboard technique...
January 2017: Microbiological Research
https://www.readbyqxmd.com/read/28012986/increased-secretion-of-exopolysaccharide-and-virulence-potential-of-a-mucoid-variant-of-salmonella-enterica-serovar-montevideo-under-environmental-stress
#7
J Jean-Gilles Beaubrun, Ben D Tall, M-L Flamer, I Patel, G Gopinath, Winny Auguste, Catherine Jean, Melvin George, Carmen Tartera, L Ewing, D E Hanes
During an investigation to increase the recovery of Salmonella enterica from Oregano, an increased expression of exopolysaccharide was induced in Salmonella serovar Montevideo. The atypical mucoid (SAL242S) and the non-mucoid (SAL242) strains of Montevideo were compared and characterized using various methods. Serotyping analysis demonstrated that both strains are the same serovar Montevideo. Electron microscopy (EM) of cultured SAL242S cells revealed the production of a prominent EPS-like structure enveloping aggregates of cells that are composed of cellulose...
December 21, 2016: Microbial Pathogenesis
https://www.readbyqxmd.com/read/27994215/antimicrobial-activity-of-basil-oregano-and-thyme-essential-oils
#8
REVIEW
Hercules Sakkas, Chrissanthy Papadopoulou
For centuries plants have been used for a wide variety of purposes, from treating infectious diseases to food preservation and perfume production. Presently, the increasing resistance of microorganisms to currently used antimicrobials in combination with the appearance of emerging diseases requires urgently the development of new, more effective drugs. Plants, due to the large biological and structural diversity of their components, constitute a unique and renewable source for the discovery of new antibacterial, antifungal and antiparasitic treatments...
December 20, 2016: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/27991969/effects-of-irrigation-intervals-and-organic-manure-on-morphological-traits-essential-oil-content-and-yield-of-oregano-origanum-vulgare-l
#9
Farzad Gerami, Parviz R Moghaddam, Reza Ghorbani, Abbas Hassani
In order to evaluate the effect of irrigation intervals and cattle manure levels on morphological traits, essential oil content and yield of oregano, an experiment was conducted at the experimental Farm of the Faculty of Agriculture, Urmia University, Iran. The experimental design was split-plots, arranged in randomized complete blocks with three replications. Main plots including irrigation intervals (1, 2 and 3 weeks) and four levels of cattle manure at 0, 10, 20 and 30 t ha-1 were allocated to sub plots...
October 2016: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/27979111/preparation-and-characterization-of-essential-oil-loaded-starch-nanoparticles-formed-by-short-glucan-chains
#10
Chao Qiu, Ranran Chang, Jie Yang, Shengju Ge, Liu Xiong, Mei Zhao, Man Li, Qingjie Sun
Essential oils (EOs), including menthone, oregano, cinnamon, lavender, and citral, are natural products that have antimicrobial and antioxidant activities. However, extremely low water solubility, and easy degradation by heat, restrict their application. The aim of this work was to evaluate the enhancement in antioxidative and antimicrobial activities of EOs encapsulated in starch nanoparticles (SNPs) prepared by short glucan chains. For the first time, we have successfully fabricated menthone-loaded SNPs (SNPs-M) at different complexation temperatures (30, 60, and 90°C) by an in situ nanoprecipitation method...
April 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27977183/co2-plant-extracts-reduce-cholesterol-oxidation-in-fish-patties-during-cooking-and-storage
#11
Marko Tarvainen, Karl-Werner Quirin, Heikki Kallio, Baoru Yang
Cholesterol oxidation products (COPs) in foods may pose risks for human health. Suitable antioxidants can reduce the formation of COPs in industrial products. Consumer awareness of food additives has brought a need for more natural alternatives. This is the first study on the effects of supercritical CO2 extracts of rosemary, oregano, and an antimicrobial blend of seven herbs, tested at two levels (1 and 3 g/kg fish), against cholesterol oxidation in patties made of a widely consumed fish species, Atlantic salmon (Salmo salar), during baking and storage...
December 28, 2016: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/27976178/essential-oils-from-caraway-oregano-and-thyme-as-phytogenic-substances-to-enhance-gut-health-in-a-porcine-epithelial-cell-culture-model
#12
E Mayer, A Springler, J Stelzer, B Novak, G Schatzmayr
No abstract text is available yet for this article.
December 2016: Planta Medica
https://www.readbyqxmd.com/read/27937075/evaluation-of-different-mediterranean-essential-oils-as-prophylactic-agents-in-anisakidosis
#13
Magdalena Gómez-Mateos Pérez, Concepción Navarro Moll, Gema Merino Espinosa, Adela Valero López
CONTEXT: Anisakis Dujardin 1845 (Anisakidae) nematodes can cause gastrointestinal and allergic diseases when humans eat raw or undercooked seafood containing larvae. There is currently no drug available in the market against this parasitic disease, and the study of plant-derived molecules could be useful in the discovery of effective compounds. OBJECTIVE: This research assesses the biocidal activity of a range of essential oils (EOs) from some Mediterranean plants against larvae found in the musculature of fresh fish...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/27916788/effects-of-dietary-oregano-essential-oil-and-vitamin-e-supplementation-on-meat-quality-stress-response-and-intestinal-morphology-in-pigs-following-transport-stress
#14
Yi Zou, Xiao Ming Hu, Ting Zhang, Hong Kui Wei, Yuan Fei Zhou, Zhong Xin Zhou, Jian Peng
This study investigates the effects of dietary oregano essential oil (OEO) and vitamin E (Vit E) supplementation on meat quality, stress response and intestinal morphology in pigs following transport stress. A total of 288 finishing pigs were randomly assigned to three groups: a basal diet or a basal diet supplemented either with 200 mg/kg Vit E or 25 mg/kg OEO. After a 28-day feeding trial, total of 132 finishing pigs according diet and transport stress were assigned to one of four treatment groups: 1) control treatment without transport stress (Control group), 2) control treatment with 5-hr transport stress (Negative group), 3) Vit E treatment with 5-hr transport stress and 4) OEO treatment with 5-hr transport stress...
December 2, 2016: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/27915173/effect-of-prolonged-water-stress-on-essential-oil-content-compositions-and-gene-expression-patterns-of-mono-and-sesquiterpene-synthesis-in-two-oregano-origanum-vulgare-l-subspecies
#15
Mohammad Reza Morshedloo, Lyle E Craker, Alireza Salami, Vahideh Nazeri, Hyunkyu Sang, Filippo Maggi
Origanum vulgare L., recognized throughout the world as a popular medicinal and flavoring herb, contains a wide array of medicinally active components, including phenolic glucosides, flavonoids, tannins, sterols and high amounts of terpenoids. Especially the latter are often extracted by hydrodistillation resulting in the so-called essential oil that is rich in monoterpenes (e.g. carvacrol, thymol, linalyl acetate) and/or sesquiterpenes (e.g. (E)-β-caryophyllene, germacrene D, bicyclogermacrene, β-caryophyllene oxide)...
November 28, 2016: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/27909913/plant-extracts-as-phytogenic-additives-considering-intake-digestibility-and-feeding-behavior-of-sheep
#16
Camila Sousa da Silva, Evaristo Jorge Oliveira de Souza, Gerfesson Felipe Cavalcanti Pereira, Edwilka Oliveira Cavalcante, Ewerton Ivo Martins de Lima, Thaysa Rodrigues Torres, José Ricardo Coelho da Silva, Daniel Cézar da Silva
The objective was to evaluate the intake, digestibility, and ingestive sheep behavior with feeding phytogenic additives derived from plant extracts. Five non-emasculated sheep without defined breed at 28 ± 1.81 kg initial body weight and 6 months age were used. Treatments consisted of administering four phytogenic additives from the garlic extracts, coriander seed, oregano, and pods of mesquite, plus a control treatment (without additive). The ration was composed of Tifton 85 hay grass, corn, soybean meal, and mineral salt...
December 1, 2016: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/27901504/evaluation-of-medicinal-plants-and-colloidal-silver-efficiency-against-vibrio-parahaemolyticus-infection-in-litopenaeus-vannamei-cultured-at-low-salinity
#17
María Soledad Morales-Covarrubias, Noemí García-Aguilar, María Del Bolan-Mejía, Ana Carmela Puello-Cruz
In shrimp aquaculture, reduction in the use of synthetic antibiotics is a priority due to the high incidence of resistant bacteria (Vibrio) in the white shrimp Litopenaeus vannamei. An increasing number of studies show bactericidal activity of natural treatments in aquaculture. The effectiveness of neem (Azadirachta indica) and oregano (Lippia berlandieri) aqueous extracts and colloidal silver against V. parahaemolyticus were evaluated in low salinity shrimp culture. Results show that aqueous extracts of oregano and neem each present a minimum inhibitory concentration (MIC) of 62...
November 22, 2016: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/27884762/pleasantness-familiarity-and-identification-of-spice-odors-are-interrelated-and-enhanced-by-consumption-of-herbs-and-food-neophilia
#18
Antti Knaapila, Oskar Laaksonen, Markus Virtanen, Baoru Yang, Hanna Lagström, Mari Sandell
The primary dimension of odor is pleasantness, which is associated with a multitude of factors. We investigated how the pleasantness, familiarity, and identification of spice odors were associated with each other and with the use of the respective spice, overall use of herbs, and level of food neophobia. A total of 126 adults (93 women, 33 men; age 25-61 years, mean 39 years) rated the odors from 12 spices (oregano, anise, rosemary, mint, caraway, sage, thyme, cinnamon, fennel, marjoram, garlic, and clove) for pleasantness and familiarity, and completed a multiple-choice odor identification...
February 1, 2017: Appetite
https://www.readbyqxmd.com/read/27875075/chamomile-and-oregano-extracts-synergistically-exhibit-antihyperglycemic-antihyperlipidemic-and-renal-protective-effects-in-alloxan-induced-diabetic-rats
#19
Rajagopalan Prasanna, Elbessoumy A Ashraf, Mahmoud A Essam
The bio-activities of separate Matricaria chamomilla (chamomile) and Origanum vulgare (oregano) are well studied; however, the combined effects of both natural products in animal diabetic models are not well characterized. In this study, alloxan-induced male albino rats were treated with single dose aqueous suspension of chamomile or oregano at dose level of either 150 or 300 mg/kg body mass or as equal parts as combination by stomach tube for 6 weeks. After treatment, blood samples were assessed for diabetic, renal, and lipid profiles...
January 2017: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/27783121/raman-spectroscopy-electronic-microscopy-and-spme-gc-ms-to-elucidate-the-mode-of-action-of-a-new-antimicrobial-food-packaging-material
#20
Isabel Clemente, Margarita Aznar, Jesús Salafranca, Cristina Nerín
One critical challenge when developing a new antimicrobial packaging material is to demonstrate the mode of action of the antimicrobials incorporated into the packaging. For this task, several analytical techniques as well as microbiology are required. In this work, the antimicrobial properties of benzyl isothiocyanate, allyl isothiocyanate and essential oils of cinnamon and oregano against several moulds and bacteria have been evaluated. Benzyl isothiocyanate showed the highest antimicrobial activity and it was selected for developing the new active packaging material...
October 25, 2016: Analytical and Bioanalytical Chemistry
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