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https://www.readbyqxmd.com/read/28221940/development-of-multifunctional-active-film-and-its-application-in-modified-atmosphere-packaging-of-shiitake-mushrooms
#1
Hong Jiang Wang, Duck Soon An, Dong Sun Lee
Agar-based films with multiple functions (CO2 absorption, water vapor absorption, and antimicrobial activity) were developed, tested for their properties, and then applied to the packaging of fresh shiitake mushrooms as an insert label. The films were cast from an agar-based aqueous solution containing a dissolving plasticizer (glycerol), a CO2 absorbent (sodium carbonate [SC] alone or a combination of SC and sodium glycinate [SC-SG]), and a volatile antimicrobial agent (carvacrol [CRV]). The agar of the film matrix is designed to serve as a water vapor absorbent...
September 2016: Journal of Food Protection
https://www.readbyqxmd.com/read/28219750/release-kinetics-of-highly-porous-floating-tablets-containing-cilostazol
#2
Kyu-Mok Hwang, Cheol-Hee Cho, Nguyen-Thach Tung, Ju-Young Kim, Yun-Seok Rhee, Eun-Seok Park
This study focuses on developing a highly porous floating tablet containing cilostazol. The underlying release mechanism of cilostazol from porous and floating tablets in dissolution media containing surfactants was investigated. The tablets were prepared by compressing granules and excipients with a sublimating agent, followed by sublimation under vacuum. The volatile material for the sublimating agent was chosen based on its flow properties using conventional methods as well as the twisted blade method. Resultant tablets could float immediately and had significantly higher tensile strengths than conventional tablets of similar porosities, holding a promising potential for increasing gastroretentive properties...
February 17, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28190546/sevoflurane-attenuates-ischemia-reperfusion-injury-in-a%C3%A2-rat%C3%A2-lung%C3%A2-transplantation-model
#3
Akihiro Ohsumi, Katherine Marseu, Peter Slinger, Karen McRae, Hyunhee Kim, Zehong Guan, David M Hwang, Mingyao Liu, Shaf Keshavjee, Marcelo Cypel
BACKGROUND: Sevoflurane is one of the most commonly used volatile anesthetic agents with the fastest onset and offset, replacing isoflurane in modern anesthesiology. Preconditioning and postconditioning using volatile anesthetics can attenuate ischemia-reperfusion injury (IRI). However, no previous studies have evaluated the effect of sevoflurane in lung transplantation after cold ischemic injury. We aimed to study the effects of donor and recipient treatment with sevoflurane in a rat lung transplantation model...
February 9, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28179194/rsdl-decontamination-of-human-skin-contaminated-with-the-nerve-agent-vx
#4
L Thors, S Lindberg, S Johansson, B Koch, M Koch, L Hägglund, A Bucht
Dermal exposure to low volatile organophosphorus compounds (OPC) may lead to penetration through the skin and uptake in the blood circulation. Skin decontamination of toxic OPCs, such as pesticides and chemical warfare nerve agents, might therefore be crucial for mitigating the systemic toxicity following dermal exposure. Reactive skin decontamination lotion (RSDL) has been shown to reduce toxic effects in animals dermally exposed to the nerve agent VX. In the present study, an in vitro flow-through diffusion cell was utilized to evaluate the efficacy of RSDL for decontamination of VX exposed to human epidermis...
February 6, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28168624/antimicrobial-activity-of-endophytic-fungi-from-olive-tree-leaves
#5
Cynthia Malhadas, Ricardo Malheiro, José Alberto Pereira, Paula Guedes de Pinho, Paula Baptista
In this study, the antimicrobial potential of three fungal endophytes from leaves of Olea europaea L. was evaluated and the host plant extract effect in the antimicrobial activity was examined. The volatile compounds produced by endophytes were identified by GC/MS and further correlated with the antimicrobial activity. In potato dextrose agar, both Penicillium commune and Penicillium canescens were the most effective inhibiting Gram-positive and -negative bacteria (up to 2.7-fold compared to 30 µg/mL chloramphenicol), whereas Alternaria alternata was most effective inhibiting yeasts (up to 8...
March 2017: World Journal of Microbiology & Biotechnology
https://www.readbyqxmd.com/read/28165381/electrospun-fibers-of-cyclodextrins-and-poly-cyclodextrins
#6
REVIEW
Alejandro Costoya, Angel Concheiro, Carmen Alvarez-Lorenzo
Cyclodextrins (CDs) can endow electrospun fibers with outstanding performance characteristics that rely on their ability to form inclusion complexes. The inclusion complexes can be blended with electrospinnable polymers or used themselves as main components of electrospun nanofibers. In general, the presence of CDs promotes drug release in aqueous media, but they may also play other roles such as protection of the drug against adverse agents during and after electrospinning, and retention of volatile fragrances or therapeutic agents to be slowly released to the environment...
February 3, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28147491/new-approach-of-financial-volatility-duration-dynamics-by-stochastic-finite-range-interacting-voter-system
#7
Guochao Wang, Jun Wang
We make an approach on investigating the fluctuation behaviors of financial volatility duration dynamics. A new concept of volatility two-component range intensity (VTRI) is developed, which constitutes the maximal variation range of volatility intensity and shortest passage time of duration, and can quantify the investment risk in financial markets. In an attempt to study and describe the nonlinear complex properties of VTRI, a random agent-based financial price model is developed by the finite-range interacting biased voter system...
January 2017: Chaos
https://www.readbyqxmd.com/read/28131994/ectopic-accumulation-of-linalool-confers-resistance-to-xanthomonas-citri-subsp-citri-in-transgenic-sweet-orange-plants
#8
Takehiko Shimada, Tomoko Endo, Ana Rodríguez, Hiroshi Fujii, Shingo Goto, Takakazu Matsuura, Yuko Hojo, Yoko Ikeda, Izumi C Mori, Takashi Fujikawa, Leandro Peña, Mitsuo Omura
In order to clarify whether high linalool content in citrus leaves alone induces strong field resistance to citrus canker caused by Xanthomonas citri subsp. citri (Xcc), and to assess whether this trait can be transferred to a citrus type highly sensitive to the bacterium, transgenic 'Hamlin' sweet orange (Citrus sinensis L. Osbeck) plants over-expressing a linalool synthase gene (CuSTS3-1) were generated. Transgenic lines (LIL) with the highest linalool content showed strong resistance to citrus canker when spray inoculated with the bacterium...
January 27, 2017: Tree Physiology
https://www.readbyqxmd.com/read/28101823/biological-activities-of-asteraceae-achillea-millefolium-and-calendula-officinalis-and-lamiaceae-melissa-officinalis-and-origanum-majorana-plant-extracts
#9
Mónica R García-Risco, Lamia Mouhid, Lilia Salas-Pérez, Alexis López-Padilla, Susana Santoyo, Laura Jaime, Ana Ramírez de Molina, Guillermo Reglero, Tiziana Fornari
Asteraceae (Achillea millefolium and Calendula officinalis) and Lamiaceae (Melissa officinalis and Origanum majorana) extracts were obtained by applying two sequential extraction processes: supercritical fluid extraction with carbon dioxide, followed by ultrasonic assisted extraction using green solvents (ethanol and ethanol:water 50:50). The extracts were analyzed in terms of the total content of phenolic compounds and the content of flavonoids; the volatile oil composition of supercritical extracts was analyzed by gas chromatography and the antioxidant capacity and cell toxicity was determined...
January 18, 2017: Plant Foods for Human Nutrition
https://www.readbyqxmd.com/read/28091587/bacillus-volatiles-adversely-affect-the-physiology-and-ultra-structure-of-ralstonia-solanacearum-and-induce-systemic-resistance-in-tobacco-against-bacterial-wilt
#10
Hafiz Abdul Samad Tahir, Qin Gu, Huijun Wu, Yuedi Niu, Rong Huo, Xuewen Gao
Volatile organic compounds (VOCs) produced by various bacteria have significant potential to enhance plant growth and to control phytopathogens. Six of the most effective antagonistic Bacillus spp. were used in this study against Ralstonia solanacearum (Rsc) TBBS1, the causal agent of bacterial wilt disease in tobacco. Bacillus amyloliquefaciens FZB42 and Bacillus artrophaeus LSSC22 had the strongest inhibitory effect against Rsc. Thirteen VOCs produced by FZB42 and 10 by LSSC22 were identified using gas chromatography-mass spectrometry analysis...
January 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28089402/aerobic-composting-of-digested-residue-eluted-from-dry-methane-fermentation-to-develop-a-zero-emission-process
#11
Yu-Lian Huang, Zhao-Yong Sun, Xiao-Zhong Zhong, Ting-Ting Wang, Li Tan, Yue-Qin Tang, Kenji Kida
Digested residue remained at the end of a process for the production of fuel ethanol and methane from kitchen garbage. To develop a zero-emission process, the compostability of the digested residue was assessed to obtain an added-value fertilizer. Composting of the digested residue by adding matured compost and a bulking agent was performed using a lab-scale composting reactor. The composting process showed that volatile total solid (VTS) degradation mainly occurred during the first 13days, and the highest VTS degradation efficiency was about 27% at the end...
January 12, 2017: Waste Management
https://www.readbyqxmd.com/read/28087784/interactions-between-zinc-and-allosteric-modulators-of-the-glycine-receptor
#12
Garrett L Cornelison, Anna W Daszkowski, Natasha C Pflanz, S John Mihic
The glycine receptor is a pentameric ligand-gated ion channel involved in fast inhibitory neurotransmission in the central nervous system. Zinc is an allosteric modulator of glycine receptor function, enhancing the effects of glycine at nM to low μM concentrations, and inhibiting its effects at higher concentrations. Low nM concentrations of contaminating zinc in electrophysiological buffers are capable of synergistically enhancing receptor modulation by other compounds such as ethanol. This suggests that, unless accounted for, previous studies of glycine receptor modulation were measuring the effects of modulator plus co-modulation by zinc on receptor function...
January 13, 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/28077760/effective-delivery-of-volatile-biocides-employing-mesoporous-silicates-for-treating-biofilms
#13
Andrea C Chan, Marimar Bravo Cadena, Helen E Townley, Mark D Fricker, Ian P Thompson
Nanoparticulate delivery of biocides has the potential to decrease levels of exposure to non-target organisms, and miminize long-term exposure that can promote the development of resistance. Silica nanoparticles are an ideal vehicle since they are inert, biocompatible, biodegradable, and thermally and chemically stable. Encapsulation of biocides within nanoparticulates can improve their stability and longevity and maximize the biocidal potential of hydrophobic volatile compounds. Herein, we have shown that the plant secondary metabolites allyl isothiocyanate and cinnamaldehyde demonstrated increased antimicrobial activity against Escherichia coli in planktonic form, when packaged into mesoporous silica nanoparticles...
January 2017: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/28048941/nematicidal-activity-of-trans-2-hexenal-against-southern-root-knot-nematode-meloidogyne-incognita-on-tomato-plants
#14
Hongbao Lu, Shuangyu Xu, Wenjuan Zhang, Chunmei Xu, Beixing Li, Daxia Zhang, Wei Mu, Feng Liu
Botanical nematicides have recently received increasing interest because of the high risks of some traditional nematicides to human health and the environment. This study evaluated the nematicidal activity of a plant volatile, trans-2-hexenal, against Meloidogyne incognita. This compound exhibited higher activity in a fumigation experiment than in the aqueous phase in vitro. Both in pot tests and in field trials, trans-2-hexenal showed significant efficacy against M. incognita while maintaining excellent plant growth, especially at doses of 1000 and 500 L ha(-1), which were superior to that of abamectin at 180 g ha(-1) via hole application treatment but not significantly different from fumigation with 400 kg ha(-1) of dazomet...
January 12, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28045451/cooperative-reinforcement-of-ionic-liquid-and-reactive-solvent-on-enzymatic-synthesis-of-caffeic-acid-phenethyl-ester-as-an-in-vitro-inhibitor-of-plant-pathogenic-bacteria
#15
Yan Xu, Sheng Sheng, Xi Liu, Chao Wang, Wei Xiao, Jun Wang, Fu-An Wu
It is widely believed that lipases in ionic liquids (ILs) possess higher enzyme activity, stability and selectivity; however, reaction equilibrium is always limited by product inhibition, and the product is difficult to separate from non-volatile ILs using distillation. To solve this problem, using trialkylphosphine oxide (TOPO) as a complexing agent, a novel biphase of reactive solvent and IL was firstly reported for caffeic acid phenethyl ester (CAPE) production from methyl caffeate (MC) and 2-phenylethanol (PE) catalyzed by lipase via transesterification...
January 2, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28024194/co-composting-of-vegetable-wastes-and-carton-effect-of-carton-composition-and-parameter-variations
#16
Soonita Anjeena Rawoteea, Ackmez Mudhoo, Sunil Kumar
The aim of the study was to investigate the effects of carton in the composting process of mixed vegetable wastes using an experimental composter of capacity 80L. Three different mixes were set-up (Mixes 1, 2 and 3) which consisted of vegetable wastes, 2.0kg paper and bulking agents, vegetable wastes, 1.5kg carton and bulking agents, vegetable wastes, 4.5kg carton and bulking agents, respectively. Temperature evolution, pH trends, moisture levels, respiration rates, percentage volatile solids and electrical conductivity were monitored for a period of 50days...
March 2017: Bioresource Technology
https://www.readbyqxmd.com/read/27997270/molecular-interactions-of-dioxins-and-dlcs-with-the-ketosteroid-receptors-an-in-silico-risk-assessment-approach
#17
Mohemmed Faraz Khan, M Mumtaz Alam, Garima Verma, Wasim Akhtar, Moshahid A Rizvi, Asif Ali, Mymoona Akhter, M Shaquiquzzaman
Dioxins and dioxin like compounds (DLCs) are the ones with poor water solubility and low volatility, resistant to physical, chemical and biological processes, persistent in the environment even under extreme conditions. Due to lipophilic nature, they get adhered to the fatty material and concentrate through biomagnification and bioaccumulation, thereby easily getting incorporated into food chains, paving the way to endocrine disruption via modulation of various human receptors. This in turn leads to certain adverse health effects...
December 20, 2016: Toxicology Mechanisms and Methods
https://www.readbyqxmd.com/read/27987785/electrophoretic-deposition-of-silica-and-its-composite-coatings-on-ti-6al-4v-and-its-in-vitro-corrosion-behaviour-for-biomedical-applications
#18
M Chellappa, U Vijayalakshmi
Novel bioceramics have an intriguing role in implants and prostheses as surface protecting agents. These bioceramics have promising features such as biocompatible, bioactive, and corrosion-resistant natures. Among bioceramics, silica glass and its composite unravel its better desirability against corrosion and wear with interfacial bone bonding capability in physiological systems by nucleating calcium phosphates over the surface, thereby enhancing the osteoinductive property. In the current study, SiO2 and ZnO were obtained by processing silica and zinc oxide precursors at low temperature using low thermal volatilization sol-gel method...
February 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/27982033/zinc-isotope-evidence-for-sulfate-rich-fluid-transfer-across-subduction-zones
#19
Marie-Laure Pons, Baptiste Debret, Pierre Bouilhol, Adélie Delacour, Helen Williams
Subduction zones modulate the chemical evolution of the Earth's mantle. Water and volatile elements in the slab are released as fluids into the mantle wedge and this process is widely considered to result in the oxidation of the sub-arc mantle. However, the chemical composition and speciation of these fluids, which is critical for the mobility of economically important elements, remain poorly constrained. Sulfur has the potential to act both as oxidizing agent and transport medium. Here we use zinc stable isotopes (δ(66)Zn) in subducted Alpine serpentinites to decipher the chemical properties of slab-derived fluids...
December 16, 2016: Nature Communications
https://www.readbyqxmd.com/read/27943550/chemical-composition-antimicrobial-activity-and-mode-of-action-of-essential-oils-against-paenibacillus-larvae-etiological-agent-of-american-foulbrood-on-apis-mellifera
#20
María Celeste Pellegrini, Rosa María Alonso-Salces, María Laura Umpierrez, Carmen Rossini, Sandra Rosa Fuselli
This study aimed to characterize the chemical composition of Aloysia polystachia, Acantholippia seriphioides, Schinus molle, Solidago chilensis, Lippia turbinata, Minthostachys mollis, Buddleja globosa and Baccharis latifolia essential oils (EOs), and evaluate their antibacterial activities and their capacity to provoke membrane disruption in Paenibacillus larvae, the bacteria that causes the American Foulbrood disease on honey bee larvae. The relationship between the composition of the EOs and these activities on P...
December 10, 2016: Chemistry & Biodiversity
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