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https://www.readbyqxmd.com/read/28813148/chitosan-coated-cinnamon-oregano-loaded-solid-lipid-nanoparticles-to-augment-5-fluorouracil-cytotoxicity-for-colorectal-cancer-extracts-standardization-nanoparticles-optimization-and-cytotoxicity-evaluation
#1
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 WHO. Qualitative-analysis using LC-HRMS/MS investigated the active-constituents especially reported cytotoxic-agents. Cinnamaldehyde and rosmarinic acid was selected to be quantified using HPLC. Phase-two was aimed to encapsulate both extracts in solid lipid nanoparticles (core) and chitosan (shell) to gain the advantages of both materials properties...
August 16, 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
#2
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
#3
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
#4
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
#5
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 26, 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
#6
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
#7
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...
July 5, 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
#8
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
#9
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
#10
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
#11
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
#12
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
https://www.readbyqxmd.com/read/28621716/antibacterial-and-antifungal-activities-of-spices
#13
REVIEW
Qing Liu, Xiao Meng, Ya Li, Cai-Ning Zhao, Guo-Yi Tang, Hua-Bin Li
Infectious diseases caused by pathogens and food poisoning caused by spoilage microorganisms are threatening human health all over the world. The efficacies of some antimicrobial agents, which are currently used to extend shelf-life and increase the safety of food products in food industry and to inhibit disease-causing microorganisms in medicine, have been weakened by microbial resistance. Therefore, new antimicrobial agents that could overcome this resistance need to be discovered. Many spices-such as clove, oregano, thyme, cinnamon, and cumin-possessed significant antibacterial and antifungal activities against food spoilage bacteria like Bacillus subtilis and Pseudomonas fluorescens, pathogens like Staphylococcus aureus and Vibrio parahaemolyticus, harmful fungi like Aspergillus flavus, even antibiotic resistant microorganisms such as methicillin resistant Staphylococcus aureus...
June 16, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28613267/essential-oils-of-oregano-biological-activity-beyond-their-antimicrobial-properties
#14
REVIEW
Nayely Leyva-López, Erick P Gutiérrez-Grijalva, Gabriela Vazquez-Olivo, J Basilio Heredia
Essential oils of oregano are widely recognized for their antimicrobial activity, as well as their antiviral and antifungal properties. Nevertheless, recent investigations have demonstrated that these compounds are also potent antioxidant, anti-inflammatory, antidiabetic and cancer suppressor agents. These properties of oregano essential oils are of potential interest to the food, cosmetic and pharmaceutical industries. The aim of this manuscript is to review the latest evidence regarding essential oils of oregano and their beneficial effects on health...
June 14, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28604598/influence-of-food-characteristics-and-food-additives-on-the-antimicrobial-effect-of-garlic-and-oregano-essential-oils
#15
Juan García-Díez, Joana Alheiro, Ana Luisa Pinto, Luciana Soares, Virgilio Falco, Maria João Fraqueza, Luis Patarata
Utilization of essential oils (EOs) as antimicrobial agents against foodborne disease has gained importance, for their use as natural preservatives. Since potential interactions between EOs and food characteristics may affect their antimicrobial properties, the present work studies the influence of fat, protein, pH, aw and food additives on the antimicrobial effect of oregano and garlic EOs against Salmonella spp. and Listeria monocytogenes. Results showed that protein, pH, aw, presence of beef extract, sodium lactate and nitrates did not influence their antimicrobial effect...
June 10, 2017: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28595460/sub-inhibitory-stress-with-essential-oil-affects-enterotoxins-production-and-essential-oil-susceptibility-in-staphylococcus-aureus
#16
Barbara Turchi, Simone Mancini, Luisa Pistelli, Basma Najar, Domenico Cerri, Filippo Fratini
Fourteen wild strains of Staphylococcus aureus positive for gene sea were tested for enterotoxins production and the minimum inhibitory concentration of Leptospermum scoparium, Origanum majorana, Origanum vulgare, Satureja montana and Thymus vulgaris essential oils (EOs) were determined. After this trial, bacteria stressed with sub-inhibitory concentration of each EO were tested for enterotoxins production by an immunoenzymatic assay and resistance to the same EO. Oregano oil exhibited the highest antibacterial activity followed by manuka and thyme oils...
June 8, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28554612/essential-oil-diversity-of-origanum-vulgare-l-populations-from-southern-italy
#17
Giuseppe De Mastro, Waed Tarraf, Leonardo Verdini, Gianluca Brunetti, Claudia Ruta
Essential oils (EOs) belonging to 25 wild populations of Origanum vulgare L. samples, growing wild in different locations of Calabria Region (Southern Italy), were analyzed using gas chromatography-mass spectrometry. The quantitative and qualitative data showed EO concentrations ranging from 0.96 to 5.10% and 37 compounds detected, representing more than 80% of the total composition of the oils. By applying hierarchical cluster analysis on the basis of the EO constituents, two main groups and three subgroups were found, reflecting the variation in the chemical composition of EOs from wild oregano populations...
November 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28530553/evaluation-of-oxidative-stability-of-lamb-burger-with-origanum-vulgare-extract
#18
R P P Fernandes, M A Trindade, F G Tonin, S M P Pugine, C G Lima, J M Lorenzo, M P de Melo
The objective was to evaluate replacement of sodium erythorbate with a natural antioxidant (oregano extract) on physicochemical and sensory stability of lamb burgers, and determine the appropriate amount. Five treatments were prepared, including control (without antioxidant), sodium erythorbate, and three concentrations of oregano extract (13.32, 17.79 and 24.01mL/kg), based on antioxidant capacity determined using the Folin-Ciocalteu, 2,2-diphenyl-1-picrylhydrazyl (DPPH) and ferric reducing antioxidant power (FRAP) methods, respectively...
October 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28498489/application-of-edible-films-containing-oregano-origanum-vulgare-essential-oil-on-queso-blanco-cheese-prepared-with-flaxseed-linum-usitatissimum-oil
#19
Cristhiam Gurdian, Alexander Chouljenko, Kevin Mis Solval, Charles Boeneke, Joan M King, Subramaniam Sathivel
Fortification of queso blanco (QB) with flaxseed oil (FO) containing omega-3 polyunsaturated fatty acids may provide a functional food with health benefits such as improved cell, brain, and retina functionality, and protection against cardiovascular and immune-inflammatory diseases. However, QB experiences a short shelf life because of the early development of yeasts and molds and addition of FO may increase susceptibility to lipid oxidation. Oregano essential oil (OEO) is known for its antimicrobial and antioxidant properties, but due to its intense flavor compounds it may not be suitable for direct incorporation into QB...
June 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28493309/effect-of-nanoemulsified-and-microencapsulated-mexican-oregano-lippia-graveolens-kunth-essential-oil-coatings-on-quality-of-fresh-pork-meat
#20
Elvia Hernández-Hernández, César Y Lira-Moreno, Isabel Guerrero-Legarreta, Graciela Wild-Padua, Prospero Di Pierro, Blanca E García-Almendárez, Carlos Regalado-González
Fresh meat is a highly perishable food. This work aimed to evaluate the influence of Mexican oregano (Lippia graveolens Kunth) incorporated into active coatings (ACs) spread on fresh pork meat as free (FEO), nanoemulsified (NEO), and microencapsulated (MEO) essential oil (EO), on its microbiological, physicochemical and sensory properties during 15 d at 4 ± 1 °C. Thymol and γ-terpinene were identified in the EO. In vitro effect of 2.85 mg EO/cm(2) was tested against Brochothrix thermosphacta, Micrococcus luteus, Lactobacillus plantarum, Pseudomonas fragi, and Salmonella Infantis...
June 2017: Journal of Food Science
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