159 research outputs found
Effect of enzyme-aided juice production on the extractability and profile of berry anthocyanins
These experiments showed that the anthocyanin yield increased significantly in certain enzyme-aided treatments as compared to control
Researching the decline in adolescent drinking: The need for a global and generational approach
Adolescent alcohol consumption has been in decline across many high-income countries since the early to mid-2000s. This is a significant public health trend, with few documented examples from history where such a global downward shift in alcohol consumption has occurred primarily among the adolescent segment of the population. In this commentary we describe the nature and breadth of the trend; reflect on the environmental, social and policy factors that have been proffered; and argue that to adequately understand and support the maintenance of these trends, three important methodological considerations are needed for future research. Firstly, longitudinal panel and qualitative studies are needed to complement and inform continuing cross-sectional research. Secondly, a collaborative cross-cultural approach is needed to contextualise the international scale of the trend and thirdly, future research must be situated within a historical and generational perspective to understand declines in adolescent drinking in the context of a broader shift in adolescent behaviours
Assessing the costs and environmental benefits of IMO regulations of ship-originated SOx and NOx emissions in the Baltic Sea
To assess the value of the environmental benefits of the Sulphur Emission regulation (SECA) that came into force in 2015, changes in depositions of SOx and NOx from ship exhaust gas emissions were modelled and monetized for the Baltic Sea region for the years 2014 and 2016. During this period, the total deposition of SOx in the study area decreased by 7.3%. The decrease in ship-originated SOx deposition from 38 kt to 3.4 kt (by over 88%) was translated into a monetary value for the ecosystem impacts of nearly 130 million USD, according to the EcoValue08 model. This is less than the modelled health benefits, but it is not insignificant. For NOx, there was no decreasing trend. The exceedance of the critical loads of SOx and NOx was also estimated. The effect of Baltic shipping on the exceedance of critical loads of acidification after SECA is very small, but Baltic shipping still has a considerable effect on the exceedance of critical loads for eutrophication
‘90 per cent of the time when I have had a drink in my hand I’m on my phone as well’: a cross-national analysis of communications technologies and drinking practices among young people
Greater use of communication technologies among young people, including mobile phones, social media and communication apps, has coincided with declines in youth alcohol use in many high-income countries. However, little research has unpacked how drinking as a practice within interconnected routines and interactions may be changing alongside these technologies. Drawing on qualitative interviews about drinking with young people aged 16–23 across three similar studies in Australia, the United Kingdom and Sweden, we identify how communication technologies may afford reduced or increased drinking. They may reduce drinking by producing new online contexts, forms of intimacy and competing activities. They may increase drinking by re-organising drinking occasions, rituals and contexts. And they may increase or reduce drinking by enabling greater fluidity and interaction between diverse practices. These countervailing dynamics have likely contributed to shifting drinking patterns and practices for young people that may be obscured beneath the population-level decline in youth drinking
Radiation Embrittlement Understanding for PLIM Activities at EC-JRC-IE
Radiation embrittlement and aging mechanisms
for NPP reactor pressure vessels and vessel internals
have been studied within NPP Plant Life Management
(PLIM) for evaluation, prediction, and
monitoring of the critical components’ service life.
The main achievements of the SAFELIFE project,
integrating various networks on PLIM issues, are
given. Results of neutron embrittlement of model
alloys are presented, and surveillance and research
data on WWER reactor pressure vessel and other
steels have been analyzed. Projects for the development
of destructive and non-destructive testing of
irradiated materials have been outlined.В рамках программы PLIM исследовано радиационное охрупчивание и механизмы старения
конструкционных сталей внутрикорпусных устройств реакторов с целью оценки, прогнозирования
и мониторинга ресурса ответственных узлов АЭС. Изложены результаты проекта
SAFELIFE, объединяющего различные подходы к контролю ресурсом АЭС. Представлены
результаты радиационного охрупчивания модельных сплавов, проанализированы данные
испытаний с использованием образцов-свидетелей, а также исследована надежность
корпусных и других типов сталей. Предложены перспективы развития разрушающих и
неразрушающих методов радиационного охрупчивания материалов.У рамках програми PLIM досліджено радіаційне окрнхчування і механізми
старіння конструкційних сталей та реакторів із метою оцінки, прогнозування
і моніторинга ресурсу відповідальних вузлів АЕС. Підсумовуються результати
проекту SAFELIFE, що об’єднує різні підходи щодо контролю
ресурсом АЕС. Представлено результати радіаційного окрихчування модельних
сплавів, проаналізовано дані випробувань із використанням зразків-
свідків, а також досліджується надійність корпусних та інших типів сталей.
Запропоновано перспективи розвитку руйнівних і неруйнівних методів радіаційного
окрихчення матеріалів
Supranational changes in drinking patterns: factors in explanatory models of substantial and parallel social change
Background: That there have been ‘long waves’ of consumption in parallel in different societies has previously been noted. Now there is a sustained drop in drinking among youth in most of Europe, Australia and North America. Can such changes be understood in a common frame? In terms of inexorable historical phenomena or forces, like Kondratieff waves? In terms of generational shifts, with a younger generation reacting against the habits of an older?
Method: Such conceptual models for understanding the dynamics of social change are examined in terms of their potential contribution in explaining when and how substantial changes in levels of consumption occur roughly in concert in different societies, with particular reference to the decline in drinking and heavy drinking in current youth cohorts.
Results and Conclusion: Timing tends to rule out economic change as a factor in the current widespread decline in youth drinking. The technological revolution of the electronic web and the smart phone seems a primary explanation, with the widespread change in social presentation and interaction — in habitus — between parents and children also involved. Directions for further research are suggested
The Expression of a Xylanase Targeted to ER-Protein Bodies Provides a Simple Strategy to Produce Active Insoluble Enzyme Polymers in Tobacco Plants
Background
Xylanases deserve particular attention due to their potential application in the feed, pulp bleaching and paper industries. We have developed here an efficient system for the production of an active xylanase in tobacco plants fused to a proline-rich domain (Zera) of the maize storage protein γ-zein. Zera is a self-assembling domain able to form protein aggregates in vivo packed in newly formed endoplasmic reticulum-derived organelles known as protein bodies (PBs).
Methodology/Principal Findings
Tobacco leaves were transiently transformed with a binary vector containing the Zera-xylanase coding region, which was optimized for plant expression, under the control of the 35S CaMV promoter. The fusion protein was efficiently expressed and stored in dense PBs, resulting in yields of up to 9% of total protein. Zera-xylanase was post-translationally modified with high-mannose-type glycans. Xylanase fused to Zera was biologically active not only when solubilized from PBs but also in its insoluble form. The resistance of insoluble Zera-xylanase to trypsin digestion demonstrated that the correct folding of xylanase in PBs was not impaired by Zera oligomerization. The activity of insoluble Zera-xylanase was enhanced when substrate accessibility was facilitated by physical treatments such as ultrasound. Moreover, we found that the thermostability of the enzyme was improved when Zera was fused to the C-terminus of xylanase.
Conclusion/Significance
In the present work we have successfully produced an active insoluble aggregate of xylanase fused to Zera in plants. Zera-xylanase chimeric protein accumulates within ER-derived protein bodies as active aggregates that can easily be recovered by a simple density-based downstream process. The production of insoluble active Zera-xylanase protein in tobacco outlines the potential of Zera as a fusion partner for producing enzymes of biotechnological relevance. Zera-PBs could thus become efficient and low-cost bioreactors for industrial purposes.This work was mainly supported by ERA Biotech (www.erabiotech.com). Additional support was supplied by grant SGR 2009/703 funded by the Generalitat de Catalunya (www10.gencat.net) and grants CDS2007/00036 of Consolider Ingenio program and TRA 2009/0124 of TRACE program funded by Ministerio de Ciencia e Inovación (MICINN, www.micinn.es). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.Peer reviewe
Intake of food rich in saturated fat in relation to subclinical atherosclerosis and potential modulating effects from single genetic variants
The relationship between intake of saturated fats and subclinical atherosclerosis, as well as the possible influence of genetic variants, is poorly understood and investigated. We aimed to investigate this relationship, with a hypothesis that it would be positive, and to explore whether genetics may modulate it, using data from a European cohort including 3,407 participants aged 54–79 at high risk of cardiovascular disease. Subclinical atherosclerosis was assessed by carotid intima-media thickness (C-IMT), measured at baseline and after 30 months. Logistic regression (OR; 95% CI) was employed to assess the association between high intake of food rich in saturated fat (vs. low) and: (1) the mean and the maximum values of C-IMT in the whole carotid artery (C-IMTmean, C-IMTmax), in the bifurcation (Bif-), the common (CC-) and internal (ICA-) carotid arteries at baseline (binary, cut-point ≥ 75th), and (2) C-IMT progression (binary, cut-point > zero). For the genetic-diet interaction analyses, we considered 100,350 genetic variants. We defined interaction as departure from additivity of effects. After age- and sex-adjustment, high intake of saturated fat was associated with increased C-IMTmean (OR:1.27;1.06–1.47), CC-IMTmean (OR:1.22;1.04–1.44) and ICA-IMTmean (OR:1.26;1.07–1.48). However, in multivariate analysis results were no longer significant. No clear associations were observed between high intake of saturated fat and risk of atherosclerotic progression. There was no evidence of interactions between high intake of saturated fat and any of the genetic variants considered, after multiple testing corrections. High intake of saturated fats was not independently associated with subclinical atherosclerosis. Moreover, we did not identify any significant genetic-dietary fat interactions in relation to risk of subclinical atherosclerosis
BacHBerry: BACterial Hosts for production of Bioactive phenolics from bERRY fruits
BACterial Hosts for production of Bioactive phenolics from bERRY fruits (BacHBerry) was a 3-year project funded by the Seventh Framework Programme (FP7) of the European Union that ran between November 2013 and October 2016. The overall aim of the project was to establish a sustainable and economically-feasible strategy for the production of novel high-value phenolic compounds isolated from berry fruits using bacterial platforms. The project aimed at covering all stages of the discovery and pre-commercialization process, including berry collection, screening and characterization of their bioactive components, identification and functional characterization of the corresponding biosynthetic pathways, and construction of Gram-positive bacterial cell factories producing phenolic compounds. Further activities included optimization of polyphenol extraction methods from bacterial cultures, scale-up of production by fermentation up to pilot scale, as well as societal and economic analyses of the processes. This review article summarizes some of the key findings obtained throughout the duration of the project
- …