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https://www.readbyqxmd.com/read/29163441/antifungal-and-anti-biofilm-activity-of-essential-oil-active-components-against-cryptococcus-neoformans-and-cryptococcus-laurentii
#1
Poonam Kumari, Rutusmita Mishra, Neha Arora, Apurva Chatrath, Rashmi Gangwar, Partha Roy, Ramasare Prasad
Cryptococcosis is an emerging and recalcitrant systemic infection occurring in immunocompromised patients. This invasive fungal infection is difficult to treat due to the ability of Cryptococcus neoformans and Cryptococcus laurentii to form biofilms resistant to standard antifungal treatment. The toxicity concern of these drugs has stimulated the search for natural therapeutic alternatives. Essential oil and their active components (EO-ACs) have shown to possess the variety of biological and pharmacological properties...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29137776/effect-of-ultrasound-treatment-on-the-properties-of-nano-emulsion-films-obtained-from-hazelnut-meal-protein-and-clove-essential-oil
#2
Osman Gul, Furkan Turker Saricaoglu, Aysegul Besir, Ilyas Atalar, Fehmi Yazici
Hazelnut meal protein (4% (w/v)) and clove essential oil (CEO) (3% (v/v)) were homogenized with ultrasound (US) at different times (2, 4 and 6 min) and amplitudes (50, 75 and 100%) to obtain nano-emulsion films. Film forming nano-emulsions (FFNs) were analyzed for average particle size (Dz) and zeta potential, and edible film characterization were evaluated depending on US treatment, as well as antibacterial and antioxidant activities. Dz values and zeta potential of FFNs decreased with increasing acoustic energy delivered to nano-emulsion system...
March 2018: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/29127810/antimicrobial-activities-of-gaseous-essential-oils-against-listeria-monocytogenes-on-a-laboratory-medium-and-radish-sprouts
#3
Gyeongmin Lee, Yoonbin Kim, Hoikyung Kim, Larry R Beuchat, Jee-Hoon Ryu
The aim of this study was to evaluate the antimicrobial activities of gaseous essential oils (EO gases) against Listeria monocytogenes on the surfaces of a laboratory medium and radish sprouts. We determined the minimal inhibitory concentration (MIC) and minimal lethal concentration (MLC) values of EO gases from eight EOs extracted from basil leaves, carrot seed, cinnamon bark, cinnamon leaves, clove flower buds, oregano leaves, thyme flowers (linalool), and thyme leaves (thymol) against L. monocytogenes on a nutrient agar supplemented with 1% glucose and 0...
November 4, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/29125629/the-function-of-yeast-cap-family-proteins-in-lipid-export-mating-and-pathogen-defense
#4
REVIEW
Rabih Darwiche, Ola El Atab, Stéphanie Cottier, Roger Schneiter
In their natural habitat, yeast cells are constantly challenged by changing environmental conditions and a fierce competition for limiting resources. To thrive under such conditions, cells need to adapt and divide quickly, and be able to neutralize the toxic compounds secreted by their neighbors. Proteins like the pathogen-related yeast, Pry proteins, which belong to the large CAP/SCP/TAPS superfamily, may have an important role in this function. CAP proteins are conserved from yeast to man and are characterized by a unique αβα sandwich fold...
November 10, 2017: FEBS Letters
https://www.readbyqxmd.com/read/29125568/chemical-composition-of-herbal-macerates-and-corresponding-commercial-essential-oils-and-their-effect-on-bacteria-escherichia-coli
#5
Marietta Białoń, Teresa Krzyśko-Łupicka, Agnieszka Pik, Piotr P Wieczorek
This study addresses the chemical composition of some commercial essential oils (clove, juniper, oregano, and marjoram oils), as well as appropriate herbal extracts obtained in the process of cold maceration and their biological activity against selected Escherichia coli strains: E. coli ATTC 25922, E. coli ATTC 10536, and E. coli 127 isolated from poultry waste. On the basis of the gas chromatography-mass spectrometry (GCMS) analysis, it was found that the commercial essential oils revealed considerable differences in terms of the composition and diversity of terpenes, terpenoids and sesquiterpenes as compared with the extracts obtained from plant material...
November 10, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29117746/in-vitro-evaluation-of-the-amoebicidal-activity-of-rosemary-rosmarinus-officinalis-l-and-cloves-syzygium-aromaticum-l-merr-perry-essential-oils-against-acanthamoeba-polyphaga-trophozoites
#6
Immacolata Anacarso, Carla Sabia, Simona de Niederhäusern, Ramona Iseppi, Carla Condò, Moreno Bondi, Patrizia Messi
Several species of the genus Acanthamoeba cause human diseases. Treatment of infections involves various problems, emphasising the need to develop alternative antiprotozoal agents. We studied the anti-amoebic activity of Essential Oils (EOs), derived from rosemary (Rosmarinus officinalis L.) and cloves (Syzygium aromaticum L. Merr. & Perry), against Acanthamoeba polyphaga strain. The amoebicidal activity of cloves and rosemary EOs was preliminary demonstrated by the morphology change (modifications in the cell shape, the presence of precipitates in the cytoplasm, autophagic vesicles, membrane blends) of the treated trophozoites...
November 8, 2017: Natural Product Research
https://www.readbyqxmd.com/read/29104390/an-in-vitro-comparative-evaluation-of-efficacy-of-disinfecting-ability-of-garlic-oil-neem-oil-clove-oil-and-tulsi-oil-with-autoclaving-on-endodontic-k-files-tested-against-enterococcus-faecalis
#7
Shivayogi Hugar, Punit M Patel, Jyoti Nagmoti, Chaitanya Uppin, Laresh Mistry, Neha Dhariwal
Aim: To comparatively evaluate the efficacy of disinfecting ability of garlic oil, neem oil, clove oil, and tulsi oil with autoclaving on endodontic K files tested against Enterococcus faecalis. Materials and methods: Fifty endodontic K files were exposed to the test micro-organism and checked for its disinfecting ability using three different methods. Result: Garlic oil, clove oil, tulsi oil and autoclave showed considerable effectiveness against E...
July 2017: International Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/29101062/antibacterial-and-antibiofilm-activities-of-eugenol-from-essential-oil-of-syzygium-aromaticum-l-merr-l-m-perry-clove-leaf-against-periodontal-pathogen-porphyromonas-gingivalis
#8
Yi Zhang, Yue Wang, Xiaojing Zhu, Ping Cao, Shaomin Wei, Yanhua Lu
The antibacterial effect and mechanism of eugenol from Syzygium aromaticum (L.) Merr. & L. M. Perry (clove) leaf essential oil (CLEO) against oral anaerobe Porphyromonas gingivalis were investigated. The results showed that eugenol, with content of 90.84% in CLEO, exhibited antibacterial activity against P. gingivalis at a concentration of 31.25 μM. Cell shrink and lysis caused by eugenol were observed with Scanning Electron Microscopy (SEM). The release of macromolecules and uptake of fluorescent dye indicated that the antibacterial activity was due to the ability of eugenol to permeabilize the cell membrane and destroy the integrity of plasmatic membrane irreversibly...
October 31, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29098578/antifungal-activity-of-essential-oils-on-two-venturia-inaequalis-strains-with-different-sensitivities-to-tebuconazole
#9
Jérôme Muchembled, Caroline Deweer, Karin Sahmer, Patrice Halama
The antifungal activity of seven essential oils (eucalyptus, clove, mint, oregano, savory, tea tree, and thyme) was studied on Venturia inaequalis, the fungus responsible for apple scab. The composition of the essential oils was checked by gas chromatography-mass spectrometry. Each essential oil had its main compound. Liquid tests were performed to calculate the IC50 of essential oils as well as their majority compounds. The tests were made on two strains with different sensitivities to tebuconazole: S755, the sensitive strain, and rs552, the strain with reduced sensitivity...
November 2, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29077554/antifungal-properties-of-essential-oils-for-improvement-of-indoor-air-quality-a-review
#10
REVIEW
Harriet Whiley, Sharyn Gaskin, Tiffany Schroder, Kirstin Ross
Concerns regarding indoor air quality, particularly the presence of fungi and moulds, are increasing. The potential for essential oils to reduce, control or remove fungi, is gaining interest as they are seen as a "natural" alternative to synthetic chemical fungicides. This review examines published research on essential oils as a method of fungal control in indoor environments. It was difficult to compare the relative performances of essential oils due to differences in research methods and reporting languages...
October 27, 2017: Reviews on Environmental Health
https://www.readbyqxmd.com/read/29075628/selective-essential-oils-from-spice-or-culinary-herbs-have-high-activity-against-stationary-phase-and-biofilm-borrelia-burgdorferi
#11
Jie Feng, Shuo Zhang, Wanliang Shi, Nevena Zubcevik, Judith Miklossy, Ying Zhang
Although the majority of patients with acute Lyme disease can be cured with the standard 2-4 week antibiotic treatment, about 10-20% of patients continue suffering from chronic symptoms described as posttreatment Lyme disease syndrome. While the cause for this is debated, one possibility is that persister bacteria are not killed by the current Lyme antibiotics and remain active in the system. It has been reported that essential oils have antimicrobial activities and some have been used by patients with persisting Lyme disease symptoms...
2017: Frontiers in Medicine
https://www.readbyqxmd.com/read/29039041/evaluation-of-antioxidant-potential-of-essential-oils-of-some-commonly-used-indian-spices-in-in-vitro-models-and-in-food-supplements-enriched-with-omega-6-and-omega-3-fatty-acids
#12
Anwesa Bag, Rabi Ranjan Chattopadhyay
The aim of this study was to evaluate and compare the antioxidant potential of essential oils of some commonly used Indian spices (black pepper, cinnamon, clove, coriander and cumin) in various in vitro models and in food supplements enriched with omega-6 and omega-3 fatty acids. In vitro antioxidant potential was evaluated using 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical-scavenging and Fe(2+) ion-chelating methods and lipid oxidation stabilisation potential was evaluated in bulk soybean oil-fish oil mixture and their oil-in-water emulsions using peroxide value (PV), p-anisidine value (p-AV) and total oxidation value as indicators of oxidation...
October 17, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29037708/the-effects-of-edible-chitosan-based-coatings-on-flavor-quality-of-raw-grass-carp-ctenopharyngodon-idellus-fillets-during-refrigerated-storage
#13
Dawei Yu, Yanshun Xu, Joe M Regenstein, Wenshui Xia, Fang Yang, Qixing Jiang, Bin Wang
This study investigated the effects of chitosan-based coatings on flavor retention of refrigerated grass carp fillets by using various indicators: free amino acids (FAA), nucleotides, trimethylamine (TMA), volatile profile, sensory quality, and electronic nose analysis. The results indicated that chitosan-based coatings contributed to the significant reduction of off-flavor compounds, such as TMA, hypoxanthine (Hx) and histidine, and accumulation of inosine monophosphate (IMP) and umami-associated FAA. GC-MS analysis showed 23 volatile organic compounds, including many C5-C9 aldehydes and alcohols in the fresh fillets...
March 1, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29029151/combined-toxicity-of-three-essential-oils-against-aedes-aegypti-diptera-culicidae-larvae
#14
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...
November 7, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/29023481/phytochemical-residue-profiles-in-rice-grains-fumigated-with-essential-oils-for-the-control-of-rice-weevil
#15
S Ezhil Vendan, S Manivannan, Anila M Sunny, R Murugesan
In the present study, we investigated the fumigant potential of five edible essential oils (EOs) against Sitophilus oryzae and their phytochemical residues in treated grains. Among the tested EOs, peppermint oil proved significantly effective (P ≤ 0.05) on S.oryzae at 400 μl/L air concentration, inducing 83 and 100% mortalities in with-food and without-food conditions respectively over 72 h exposure. In addition, it was also observed that the binary mixtures of peppermint + lemon oil (1:1 ratio) produced an equivalent effect to that of peppermint oil alone treatments...
2017: PloS One
https://www.readbyqxmd.com/read/29022202/clove-oil-induces-anaesthesia-and-blunts-muscle-contraction-power-in-three-amazon-fish-species
#16
Rodrigo Yudi Fujimoto, Débora Martins Pereira, Jessica Cristina Souza Silva, Laís Cássia Araújo de Oliveira, Luis Antonio Kioshi Aoki Inoue, Moisés Hamoy, Vanessa Jóia de Mello, Marcelo Ferreira Torres, Luis André Luz Barbas
Clove oil is used as an anaesthetic for many species of fish worldwide; however, relatively few studies have assessed its effectiveness on Amazon fish species and no compelling evidence has ever been reported on the relaxant properties of this oil for skeletal muscle of fish. Thus, the objective of this study was to evaluate the latencies to deep anaesthesia and recovery, along with the myorelaxant effect of clove oil on three Amazon fish species: cardinal tetra, Paracheirodon axelrodi, banded cichlid, Heros severus and angelfish, Pterophyllum scalare, submitted to short-term anaesthetic baths...
October 12, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/29018241/eugenol-inhibits-oxidative-phosphorylation-and-fatty-acid-oxidation-via-downregulation-of-c-myc-pgc-1%C3%AE-err%C3%AE-signaling-pathway-in-mcf10a-ras-cells
#17
Xianxin Yan, Guijuan Zhang, Fengjie Bie, Yanhong Lv, Yi Ma, Min Ma, Yurong Wang, Xiaoqian Hao, Naijun Yuan, Xuefeng Jiang
Alteration in cellular energy metabolism plays a critical role in the development and progression of cancer. Targeting metabolic pathways for cancer treatment has been investigated as potential preventive or therapeutic methods. Eugenol (Eu), a major volatile constituent of clove essential oil mainly obtained from Syzygium, has been reported as a potential chemopreventive drug. However, the mechanism by which Eu regulates cellular energy metabolism is still not well defined. This study was designed to determine the effect of Eu on cellular energy metabolism during early cancer progression employing untransformed and H-ras oncogene transfected MCF10A human breast epithelial cells...
October 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28987365/anti-oxidant-activity-and-major-chemical-component-analyses-of-twenty-six-commercially-available-essential-oils
#18
Hsiao-Fen Wang, Kuang-Hway Yih, Chao-Hsun Yang, Keh-Feng Huang
This study analyzed 26 commercially available essential oils and their major chemical components to determine their antioxidant activity levels by measuring their total phenolic content (TPC), reducing power (RP), β-carotene bleaching (BCB) activity, trolox equivalent antioxidant capacity (TEAC), and 1,1-diphenyl-2-picrylhydrazyl free radical scavenging (DFRS) ability. The clove bud and thyme borneol essential oils had the highest RP, BCB activity levels, and TPC values among the 26 commercial essential oils...
October 2017: Journal of Food and Drug Analysis
https://www.readbyqxmd.com/read/28974790/innovative-production-of-fungal-pulp-from-trametes-versicolor-and-its-application-in-a-fungal-paper-box-containing-clove-oil
#19
Benyapa Srikaew, Narumol Matan, Tanong Aewsiri
The aims of this study were to develop fungal pulp from Trametes versicolor (white-rot fungi) and apply it with clove oil in a paper box to inhibit mold growth on the surface of peanuts. Broken rice media with different sugar solutions (2-10% w w(-1)) were prepared and then inoculated with T. versicolor mycelium at amounts from 0.5 to 1.5% w w(-1). Fungal pulp and commercial paper (50 g) at different ratios (100:0, 70:30, 50:50, 30:70 and 0:100) were mixed and prepared before being placed into a stainless box (5 cm long by 5 cm wide)...
September 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28946351/inhibitory-effects-of-cinnamon-and-clove-essential-oils-on-mold-growth-on-baked-foods
#20
Jian Ju, Xiaomiao Xu, Yunfei Xie, Yahui Guo, Yuliang Cheng, He Qian, Weirong Yao
This study evaluated the minimum inhibition concentration (MIC) and minimum lethal concentration (MLC) of cinnamon and clove essential oils against mold growth on green bean cake and finger citron crisp cake, and also examined the effects of these two essential oils and their application methods on the shelf life of the baked products in normal and vacuum packages by accelerated storage test. The results showed that the MIC of cinnamon and clove essential oils against molds were 0.21-0.83 and 0.21-1.67μL/mL, respectively and the MLC were 0...
February 1, 2018: Food Chemistry
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