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https://www.readbyqxmd.com/read/29751895/inhibitory-effects-of-chitosan-based-coatings-on-endogenous-enzyme-activities-proteolytic-degradation-and-texture-softening-of-grass-carp-ctenopharyngodon-idellus-fillets-stored-at-4-%C3%A2-c
#1
Dawei Yu, Joe M Regenstein, Jinhong Zang, Wenshui Xia, Yanshun Xu, Qixing Jiang, Fang Yang
The study evaluated the inhibitory effects of chitosan-based coatings on endogenous enzyme activities, proteolytic degradation and texture softening of grass carp (Ctenopharyngodon idellus) fillets stored at 4 °C for 15 days. In general, the inhibitory effects of chitosan coating were worse than that of chitosan composite coatings, which significantly inhibited cathepsin B, B + L and calpain activities of fillets, with the most reductions of 58%, 65% and 41%, respectively when compared to the corresponding values of control fillets...
October 1, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29738503/investigation-of-the-antifungal-activity-and-mode-of-action-of-thymus-vulgaris-citrus-limonum-pelargonium-graveolens-cinnamomum-cassia-ocimum-basilicum-and-eugenia-caryophyllus-essential-oils
#2
Katarzyna Gucwa, Sławomir Milewski, Tomasz Dymerski, Piotr Szweda
The antimicrobial activity of plant oils and extracts has been recognized for many years. In this study the activity of Thymus vulgaris , Citrus limonum , Pelargonium graveolens , Cinnamomum cassia , Ocimum basilicum , and Eugenia caryophyllus essential oils (EOs) distributed by Pollena Aroma (Nowy Dwór Mazowiecki, Poland) was investigated against a group of 183 clinical isolates of C. albicans and 76 isolates of C. glabrata . All of the oils exhibited both fungistatic and fungicidal activity toward C. albicans and C...
May 8, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29713695/influence-of-oil-phase-composition-on-the-antifungal-and-mycotoxin-inhibitory-activity-of-clove-oil-nanoemulsions
#3
Jing Wan, Shaobin Zhong, Paul Schwarz, Bingcan Chen, Jiajia Rao
The influence of oil composition on the physical properties and antifungal and mycotoxin inhibitory activity of clove oil-in-water nanoemulsions was investigated. Physically stable clove oil-in-water nanoemulsions could be fabricated by incorporating either ≥75 wt% of corn oil or ≥50 wt% of medium chain triacylglycerol (MCT) into clove oil before homogenization to prevent Ostwald ripening. The clove oil-in-water nanoemulsions with mean diameters of <150 nm showed high physical stability over 30 days storage...
May 1, 2018: Food & Function
https://www.readbyqxmd.com/read/29708847/preliminary-study-on-the-antibacterial-activity-of-essential-oils-alone-and-in-combination-with-gentamicin-against-extended-spectrum-%C3%AE-lactamase-producing-and-new-delhi-metallo-%C3%AE-lactamase-1-producing-klebsiella-pneumoniae-isolates
#4
Paweł Kwiatkowski, Agata Pruss, Bartłomiej Grygorcewicz, Bartosz Wojciuk, Barbara Dołęgowska, Stefania Giedrys-Kalemba, Ewa Kochan, Monika Sienkiewicz
AIM: The aim of the study was to investigate possible synergistic effects between several selected, commercially available essential oils and gentamicin against extended-spectrum β-lactamase (ESBL)-producing and New Delhi metallo-β-lactamase-1 (NDM-1)-producing Klebsiella pneumoniae isolates. MATERIALS AND METHODS: ESBLs production was confirmed by double-disk synergy test. Isolates positive for blaNDM-1 gene were found among the tested strains. K. pneumoniae ATCC® BAA-1705™ strain was used as a control...
April 30, 2018: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/29708476/antileishmanial-activity-of-sulphonamide-nanoemulsions-targeting-the-%C3%AE-carbonic-anhydrase-from-leishmania-species
#5
Verônica da Silva Cardoso, Alane Beatriz Vermelho, Eduardo Ricci Junior, Igor Almeida Rodrigues, Ana Maria Mazotto, Claudiu T Supuran
The β-carbonic anhydrase (CA, EC 4.2.1.1) from Leishmania spp. (LdcCA) is effectively inhibited by aromatic/heterocyclic sulphonamides, in the low nanomolar range, but no in vitro antileishmanial activity was detected for such compounds. We formulated some of these sulphonamides as nanoemulsions (NEs) in clove oil, and tested them in vitro against Leishmania infantum MHOM/BR/1974/PP75 and Leishmania amazonensis IFLA/BR/1967/PH8 strains. Interesting inhibitory concentrations IC50 were observed for some of the sulphonamides NEs, with IC50 as low as 3...
December 2018: Journal of Enzyme Inhibition and Medicinal Chemistry
https://www.readbyqxmd.com/read/29704553/changes-in-natural-haemolytic-complement-activity-induced-by-stress-in-gilthead-seabream-sparus-aurata-l
#6
Francisco A Guardiola, Miguel Saraiva-Fraga, Alberto Cuesta, M Angeles Esteban
In aquaculture, animals can be continually exposed to environmental stress factors that put their health and even survival at risk. Two experiments were performed to evaluate the impact of different stress conditions (acute crowding and anaesthetic) on the natural haemolytic complement activity in serum and skin mucus of gilthead seabream (Sparus aurata L.). In the first experiment, fish were subjected to 10 kg m-3 (low density, control group) and 50 kg m-3 (high density, crowding group) during 2, 24 and 48 h...
April 25, 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29691007/antimicrobial-antioxidant-and-waterproof-rtv-silicone-ethyl-cellulose-composites-containing-clove-essential-oil
#7
José A Heredia-Guerrero, Luca Ceseracciu, Susana Guzman-Puyol, Uttam C Paul, Alejandro Alfaro-Pulido, Chiara Grande, Luigi Vezzulli, Tiziano Bandiera, Rosalia Bertorelli, Debora Russo, Athanassia Athanassiou, Ilker S Bayer
Ethyl cellulose (EC)/polydimethylsiloxane (PDMS) composite films were prepared at various concentrations of PDMS in the films (0, 5, 10, 15, and 20 wt.%). Morphological and chemical analysis by EDX-SEM and ATR-FTIR showed that EC-rich matrices and PDMS-rich particles were formed, with the two polymers interacting through Hbonds. The number and diameter of particles in the composite depended on the PDMS content and allowed a fine tuning of several properties such as opacity, hydrophobicity, water uptake, and water permeability...
July 15, 2018: Carbohydrate Polymers
https://www.readbyqxmd.com/read/29688798/susceptibility-distribution-to-essential-oils-of-salmonella-enterica-strains-involved-in-animal-and-public-health-and-comparison-of-the-typhimurium-and-enteritidis-serotypes
#8
Ana Lucía Solarte, Rafael Jesús Astorga, Fabiana Carolina de Aguiar, Cristina De Frutos, Belén Barrero-Domínguez, Belén Huerta
To determine the distribution of the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of essential oils (EOs) of cinnamon (Cinnamomum zeylanicum), clove (Eugenia caryophyllata), oregano (Origanum vulgare), common thyme (Thymus vulgaris), and red thyme (Thymus zygis) against Salmonella enterica, double serial dilutions of each EO were challenged with 85 Salmonella strains belonging to 23 serotypes of animal origin. The results showed the bactericidal character of the EOs tested against S...
April 24, 2018: Journal of Medicinal Food
https://www.readbyqxmd.com/read/29683648/fabrication-and-release-behavior-of-microcapsules-with-double-layered-shell-containing-clove-oil-for-antibacterial-applications
#9
Yong Bing Chong, He Zhang, Chee Yoon Yue, Jinglei Yang
In this study, double layer polyurethane/polyurea-formaldehyde (PU/PUF) shell microcapsules containing clove oil with antibacterial properties were successfully synthesized via in situ and interfacial polymerization reactions in an oil-in-water emulsion. The morphology, core-shell structure and composition of the microcapsules were investigated systematically. Additionally, the release behaviors of microcapsules synthesized under different reaction parameters were studied. It was found that the release rate of clove oil can be controlled by tuning the amount of PU reactants and the length of PUF deposition time...
April 23, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29611004/eugenol-derivatives-synthesis-characterization-and-evaluation-of-antibacterial-and-antioxidant-activities
#10
Francisco Felipe Maia da Silva, Francisco José Queiroz Monte, Telma Leda Gomes de Lemos, Patrícia Georgina Garcia do Nascimento, Alana Kelly de Medeiros Costa, Luanda Misley Mota de Paiva
Eugenol is the major component of clove essential oil and has demonstrated relevant biological potential with well-known antimicrobial and antioxidant action. Therefore, this work carried out the synthesis, purification, characterization, and evaluation of the antioxidant and antibacterial potential of 19 eugenol derivatives. The derivatives were produced by esterification reactions in the hydroxyl group (-OH) of eugenol with different carboxylic acids and also by addition reactions in the double bond of the allyl group...
April 3, 2018: Chemistry Central Journal
https://www.readbyqxmd.com/read/29609029/a-time-course-study-of-glucose-levels-and-innate-immune-response-in-gilthead-seabream-sparus-aurata-l-after-exposure-to-clove-oil-eugenol-derived-anaesthetic
#11
A Bahi, F A Guardiola, M A Esteban
Clove oil is used as an anaesthetic for many species of fish worldwide; however, relatively few studies have assessed its effects on the innate immune response on these species. The present work aimed to investigate the effects of clove oil-eugenol derived anaesthetic on some humoral and cellular immune response in gilthead seabream (Sparus aurata L.). To compare with an unexposed control group, fish were exposed to 55 ppm clove oil for 5 min, before being sampled at 1, 24 and 48 h post-exposure. Serum glucose level was also measured to obtain information on the fish physiological response after clove oil anaesthesia...
March 30, 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29601442/early-administration-of-n-acetylcysteine-in-the-treatment-of-clove-oil-ingestion
#12
Aram Kim, Andrew N Farkas, Stephanie B Dewar, Michael G Abesamis
No abstract text is available yet for this article.
March 29, 2018: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/29575822/antimicrobial-activity-of-selected-essential-oils-against-streptococcus-suis-isolated-from-pigs
#13
Fabiana C de Aguiar, Ana Lucía Solarte, Carmen Tarradas, Inmaculada Luque, Alfonso Maldonado, Ángela Galán-Relaño, Belén Huerta
The inhibitory potential by contact and vapor of basil, cinnamon, clove, peppermint, oregano, rosemary, common thyme, and red thyme essential oils (EOs) against 20 strains of Streptococcus suis was determined by the disk diffusion test. The broth microdilution method was used to determine the minimal inhibitory and minimal bactericidal concentration (MIC and MBC) of the four selected oils. Furthermore, the bactericidal power (ratio MBC/MIC) was calculated. The EOs with the major potential in the disk diffusion method were red thyme, common thyme, oregano, and cinnamon (∅ mean 16...
March 24, 2018: MicrobiologyOpen
https://www.readbyqxmd.com/read/29573796/evaluation-of-alternatives-to-cautery-disbudding-of-dairy-goat-kids-using-physiological-measures-of-immediate-and-longer-term-pain
#14
Melissa N Hempstead, Joseph R Waas, Mairi Stewart, Vanessa M Cave, Mhairi A Sutherland
We evaluated alternatives to cautery disbudding of goat kids using physiological measures of immediate and longer-term pain. Fifty Saanen doe kids were randomly assigned to 1 of 5 treatments (n = 10/treatment): (1) cautery disbudding (CAUT), (2) caustic paste disbudding (CASP), (3) liquid nitrogen disbudding (CRYO), (4) clove oil injected into the horn bud (CLOV), or (5) sham disbudding (SHAM). Serum cortisol and haptoglobin concentrations were measured from blood samples collected immediately before treatment (baseline) and at 15, 30, 60, and 120 min and then again at 6 and 24 h post-treatment...
March 21, 2018: Journal of Dairy Science
https://www.readbyqxmd.com/read/29564098/the-inhibitory-potential-of-zataria-multiflora-and-syzygium-aromaticum-essential-oil-on-growth-and-aflatoxin-production-by-aspergillus-flavus-in-culture-media-and-iranian-white-cheese
#15
Marzieh Moosavi-Nasab, Jalal Jamalian, Hana Heshmati, Soroush Haghighi-Manesh
Antifungal activity of essential oils (EOs) of Zataria multiflora (thyme) and Syzygium aromaticum (clove) against Aspergillus flavus growth and aflatoxin B1 production was studied in potato dextrose agar (PDA) and potato dextrose broth (PDB), as well as in Iranian white cheese as a food model. The results showed that the inhibitory potential of EOs in the PDB medium is more than PDA medium. Clove EO on PDB medium prevented fungal growth and aflatoxin B1 production at 300 and 100 ppm, respectively. However, the thyme EO was not able to inhibit fungal growth completely and showed the strongest inhibition effect at 400 ppm...
March 2018: Food Science & Nutrition
https://www.readbyqxmd.com/read/29564096/preservative-effects-of-some-selected-spice-oleoresins-to-stabilize-the-sunflower-oil-in-comparison-to-tertiary-butylhydroquinone
#16
Mahalaxmi Pradhananga, Pratibha Manandhar
DPPH (1, 1-Diphenyl-2-Picrylhydrazyl) radical scavenging activity was performed to find out the antioxidant activity (AA) of all the antioxidants used at a concentration of 5, 10, and 15 μl/ml. Effect of spice oleoresins (clove, black pepper, and ginger) (200 ppm) and TBHQ (200 ppm) were incorporated in stabilizing refined, bleached, and deodorized (RBD) sunflower oil heating at frying temperature (170°C) and during accelerated oxidation storage (70°C) was studied in comparison to Tert-Butylhydroquinone (TBHQ)...
March 2018: Food Science & Nutrition
https://www.readbyqxmd.com/read/29554611/terpenoid-constituents-of-cinnamon-and-clove-essential-oils-cause-toxic-effects-and-behavior-repellency-response-on-granary-weevil-sitophilus-granarius
#17
Angelica Plata-Rueda, Juliana Mendonça Campos, Gabriela da Silva Rolim, Luis Carlos Martínez, Marcelo Henrique Dos Santos, Flávio Lemes Fernandes, José Eduardo Serrão, José Cola Zanuncio
This study evaluated toxic effects, repellency and respiration rate caused by terpenoid constituents of cinnamon and clove essential oils and against Sitophilus granarius L. (Coleoptera: Curculionidae). The lethal concentrations (LC50 and LC90 ), repellent effect, and behavior repellency response on adults of S. granarius after exposure to six concentrations of each essential oil and terpenoids were evaluated. The chemical composition of the cinnamon oil was also determined and primary compounds were eugenol (10...
July 30, 2018: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29516785/antifungal-activity-of-essential-oils-against-fungi-isolated-from-air
#18
Tiffany Schroder, Sharyn Gaskin, Kirstin Ross, Harriet Whiley
Fungal contamination of indoor air is an issue of increasing public health concern. Essential oils have been demonstrated to have antifungal capabilities, but there are limited studies investigating the efficacy of essential oils against fungi relevant to air quality. This study provides a preliminary screening of the antifungal properties of clove, lavender and eucalyptus essential oils against a range of fungal species isolated from environmental air samples. The ability of the essential oils to inhibit fungal growth was examined using the disk diffusion assay on malt extract agar and was compared with vinegar, bleach and limonene, with phenol as a positive control...
July 2017: International Journal of Occupational and Environmental Health
https://www.readbyqxmd.com/read/29484994/antifungal-activity-of-eugenol-loaded-electrospun-pan-nanofiber-mats-against-candida-albicans
#19
Koroush Semnani, Masoomeh Shams-Ghahfarokhi, Mehran Afrashi, Aref Fakhrali, Dariush Semnani
Eugenol, as the major phenolic component of clove essential oil due to its desired properties in medical field, was loaded into polyacrylonitrile (PAN) nanofibers with various percentages. Our main purpose in this study was to determine the in vitro antifungal activity of eugenol loaded on PAN nanofibers against Candida albicans as the most common causative agent for candidiasis. Also, the surface morphology and the mechanical properties of nanofibers were studied by scanning electron microscope (SEM) and a tensile tester, respectively...
February 26, 2018: Current Drug Delivery
https://www.readbyqxmd.com/read/29467483/clove-bud-oil-modulates-pathogenicity-phenotypes-of-the-opportunistic-human-pathogen-pseudomonas-aeruginosa
#20
Jayalekshmi Haripriyan, Athira Omanakuttan, Nitasha D Menon, Muralidharan Vanuopadath, Sudarslal Sadasivan Nair, Ross Corriden, Bipin G Nair, Victor Nizet, Geetha B Kumar
Earlier studies from our laboratory have demonstrated that clove bud oil (CBO) attenuates expression of certain virulence factors of Pseudomonas aeruginosa PAO1. Here, we probe more deeply into the effect of CBO on four pseudomonal proteases - elastase A, elastase B, protease IV and alkaline protease - each known to play key roles in disease pathogenesis. CBO inhibited the activity of these proteases present in the bacterial culture supernatant. Zymography studies indicated that these proteases can activate host matrix metalloproteases (MMPs) to establish infection, through conversion of pro-MMP-2 to active MMP-2...
February 21, 2018: Scientific Reports
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