133 research outputs found

    The importance of systemic risk assessment in a risk-based common European Union deposit insurance system: case of Lithuania

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    The financial crisis has shown that the deposit insurance system did not help to maintain depositors’ confidence and financial stability for the whole banking sector. In order to ensure equal protection to depositors in all European Union countries, the European Commission presented the common European Union risk-based deposit insurance system model in 2015. In this model, the individual risk of each bank should be measured. However, there are discussions in scientific literature that the amount of systemic risk of the banks should be measured. In the current economy it is very important to measure the arising amount of systemic risk in the banking sector, but even the new E.U. common deposit insurance system model of 2015 does not take systemic risk assessment into account. The aim of the research is to evaluate the risk-based common European deposit insurance system impact on deposit insurance premiums to Lithuanian banks: not only individual banks’ risks, but the systemic risk as well. The most appropriate systemic risk assessment method was selected according to different scientific researchers and strong Lithuanian banking sector concentration. The results showed that inclusion of the systemic risk assessment in risk-based deposit insurance system helps to have more accurate bank risk assessment

    Essential Oils As Additives In Active Food Packaging

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    Food packaging can be considered as a passive barrier that protects food from environmental factors such as ultraviolet light, oxygen, water vapour, pressure and heat. It also prolongs the shelf-life of food by protecting from chemical and microbiological contaminants and enables foods to be transported and stored safely. Active packaging (AP) provides the opportunity for interaction between the external environment and food, resulting in extended shelf-life of food. Chemoactive packaging has an impact on the chemical composition of the food product. The application of natural additive such as essential oils in active packaging can be used in the forms of films and coatings. It has been observed that, AP helps to maintain temperature, moisture level and microbial and quality control of the food. This review article provides an overview of the active packaging incorporated with essential oils, concerns and challenges in industry, and the effect of essential oil on the packaging microstructure, antioxidant and antimicrobial properties

    Characterization and Antimicrobial Activity of Biodegradable Active Packaging Enriched with Clove and Thyme Essential Oil for Food Packaging Application

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    Bioactive packaging contains natural antimicrobial agents, which inhibit the growth of microorganisms and increase the food shelf life. Solvent casting method was used to prepare the Poly (lactide)-Poly (butylene adipate-co-terephthalate) (PLA-PBAT) film incorporated with the thyme oil and clove oil in various concentrations (1 wt%, 5 wt% and 10 wt%). The clove oil composite films depicted less green and more yellow as compared to thyme oil composite films. Clove oil composite film has shown an 80% increase in the UV blocking efficiency. The tensile strength (TS) of thyme oil and clove oil composite film decreases from 1.35 MPs (control film) to 0.96 MPa and 0.79, respectively. A complete killing of S. aureus that is a reduction from 6.5 log CFU/mL to 0 log CFU/mL was observed on the 10 wt% clove oil incorporated composite film. Clove oil and thyme oil composite film had inhibited E. coli biofilm by 93.43% and 82.30%, respectively. Clove oil composite film had exhibited UV blocking properties, strong antimicrobial activity and has high potential to be used as an active food packagin

    Development of Essential Oil Incorporated Active Film Based on Biodegradable Blends of Poly (Lactide)/Poly (Butylene Adipate‑co‑Terephthalate) for Food Packaging Application

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    Active packaging improves food safety and quality with the incorporation of certain additives such as antimicrobial agents. The PLA/PBAT films were prepared with two essential oils—eucalyptus oil and cinnamon oil of various concentrations (1%, 5%, and 10% w/w) and characterized their optical and mechanical properties, surface hydrophobicity, chemical composition, and antimicrobial activity. Cinnamon oil composite films were observed as thicker films (88.88 µm) than the eucalyptus oil films (54.46 µm). The highest UV-blocking properties were observed in cinnamon oil films. However, transparency and tensile properties of the cinnamon oil films decreases as the concentration increases. The tensile strength of the eucalyptus oil film decreased by 17%, while for cinnamon by 42%. The cinnamon oil (10% w/w) film showed ≈ 5% higher biofilm inhibition than eucalyptus oil (10% w/w). The PLA/PBAT–cinnamon oil films with potent antimicrobial and UV-blocking properties can be used in food packaging to improve the quality and increase the shelf-life of foods

    Assessment of devices, diagnostics and digital technologies: a review of NICE medical technologies guidance

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    Background: The Medical Technologies Evaluation Programme (MTEP) of NICE in England aims to evaluate medical devices that are deemed to be cost-saving or cost-neutral and produce medical technology guidance (MTG) to encourage their adoption. Objective: To review the MTGs since MTEP’s inception in 2009 until February 2017. Methods: One researcher assessed all published MTGs and extracted data on the clinical and economic evidence supporting each technology. The NICE Committee’s decision outcome for each assessment was also recorded. A qualitative analysis was performed on technologies that were not supported for adoption to identify the main drivers of the decision. Results: 31 MTGs were reviewed. The committee fully supported the medical devices in 14 MTGs, 11 were partially supported and 6 not-supported. 58% of the MTGs had no RCT data available and the main source of evidence came from non-experimental studies. There was no statistically significant difference in the average number of RCTs and non-experimental studies between the fully supported, partially supported and not supported technologies. Whilst all the fully supported MTGs demonstrated cost-saving results only 50% of the not-supported MTGs did. The sponsor estimated a higher average cost-saving than the EAC in most of cases (20/31). The qualitative evaluation suggests that the main drivers for negative decisions were the quantity or quality of studies, and cost incurring results in the economic evaluation. Conclusions: The main drivers of the decision-making process are the quality and quantity of the submitted evidence supporting the technologies, as well as the economic evaluation results

    Structure and mechanism of a canonical poly(ADP-ribose) glycohydrolase

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    Poly(ADP-ribosyl)ation is a reversible post-translational protein modification involved in the regulation of a number of cellular processes including DNA repair, chromatin structure, mitosis, transcription, checkpoint activation, apoptosis and asexual development. The reversion of poly(ADP-ribosyl)ation is catalysed by poly(ADP-ribose) (PAR) glycohydrolase (PARG), which specifically targets the unique PAR (1''-2') ribose-ribose bonds. Here we report the structure and mechanism of the first canonical PARG from the protozoan Tetrahymena thermophila. In addition, we reveal the structure of T. thermophila PARG in a complex with a novel rhodanine-containing mammalian PARG inhibitor RBPI-3. Our data demonstrate that the protozoan PARG represents a good model for human PARG and is therefore likely to prove useful in guiding structure-based discovery of new classes of PARG inhibitors

    Visualization of poly(ADP-ribose) bound to PARG reveals inherent balance between exo- and endo-glycohydrolase activities

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    Poly-ADP-ribosylation is a post-translational modification that regulates processes involved in genome stability. Breakdown of the poly(ADP-ribose) (PAR) polymer is catalysed by poly(ADP-ribose) glycohydrolase (PARG), whose endo-glycohydrolase activity generates PAR fragments. Here we present the crystal structure of PARG incorporating the PAR substrate. The two terminal ADP-ribose units of the polymeric substrate are bound in exo-mode. Biochemical and modelling studies reveal that PARG acts predominantly as an exo-glycohydrolase. This preference is linked to Phe902 (human numbering), which is responsible for low-affinity binding of the substrate in endo-mode. Our data reveal the mechanism of poly-ADP-ribosylation reversal, with ADP-ribose as the dominant product, and suggest that the release of apoptotic PAR fragments occurs at unusual PAR/PARG ratios

    CCAP regulates feeding behavior via the NPF pathway in Drosophila adults

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    The intake of macronutrients is crucial for the fitness of any animal and is mainly regulated by peripheral signals to the brain. How the brain receives and translates these peripheral signals or how these interactions lead to changes in feeding behavior is not well-understood. We discovered that 2 crustacean cardioactive peptide (CCAP)-expressing neurons in Drosophila adults regulate feeding behavior and metabolism. Notably, loss of CCAP, or knocking down the CCAP receptor (CCAP-R) in 2 dorsal median neurons, inhibits the release of neuropeptide F (NPF), which regulates feeding behavior. Furthermore, under starvation conditions, flies normally have an increased sensitivity to sugar; however, loss of CCAP, or CCAP-R in 2 dorsal median NPF neurons, inhibited sugar sensitivity in satiated and starved flies. Separate from its regulation of NPF signaling, the CCAP peptide also regulates triglyceride levels. Additionally, genetic and optogenetic studies demonstrate that CCAP signaling is necessary and sufficient to stimulate a reflexive feeding behavior, the proboscis extension reflex (PER), elicited when external food cues are interpreted as palatable. Dopaminergic signaling was also sufficient to induce a PER. On the other hand, although necessary, NPF neurons were not able to induce a PER. These data illustrate that the CCAP peptide is a central regulator of feeding behavior and metabolism in adult flies, and that NPF neurons have an important regulatory role within this system
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