6,874 research outputs found

    ISO 9001 European Scoreboard: an instrument to measure macroquality

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    Purpose: ISO 9001 certification is nowadays considered to be one of the most effective tools that can be adopted for guiding the management of Quality Systems. The stunning growth observed by these standards all over the world confirms a strong polarisation of enterprises’ interest in this practice. Owing to the wide incidence of this phenomenon, a deep investigation of ISO 9001 diffusion over time is mandatory and of importance. In line with our previous publications, this paper derives from a research project that we are conducting in Portugal in order to develop the ‘ISO 9001 European Scoreboard’, aimed at studying and ranking European Union (EU) countries based on the diffusion of quality management systems. Methodology/approach: In order to achieve such a goal, the authors have performed a set of statistical analyses over public data sets. Findings: Based on the model developed and the analyses performed, we were able to identify clusters of countries with different ISO 9001 evolution stages, derived from the ISO 9001 per 1000 inhabitants’ scores and countries’ growth indexes. Originality: With this scoreboard, we are able to categorise and rank countries based on the quality management systems evolution (growth rates) over the past few years. Ultimately, such an ‘ISO 9001 European Scoreboard’ will be an instrument to provide a comparative assessment of quality management practices over the EU states, leading to the dynamic evaluation of their ‘macroquality’ levels achieved, according to such a standard. We believe that such results provide an additional important contribution to the study of management systems diffusion/evolution, aimed at providing more fact-based insights and understandings

    Lipidomic signature of the green macroalgae Ulva rigida farmed in a sustainable integrated multi-trophic aquaculture

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    Ulva species, green macroalgae, are widely distributed across the globe, being one of the most heavily traded edible seaweeds. Nonetheless, although this genus has been largely used in scientific studies, its lipidome remains rather unexplored. The present study sheds light over the lipid profile of Ulva rigida produced in a land-based integrated multi-trophic aquaculture (IMTA) system using liquid chromatography coupled to high-resolution mass spectrometry for molecular lipid species identification. The lipidome of U. rigida revealed the presence of distinct beneficial n-3 fatty acids for human health, namely alpha-linoleic acid (ALA) and docosapentaenoic acid (DPA). A total of 87 molecular species of glycolipids, 58 molecular species of betaine lipids, and 57 molecular species of phospholipids were identified in the lipidome of U. rigida including some species bearing PUFA and with described bioactive properties. Overall, the present study contributes to the valorization and quality validation of sustainably farmed U. rigida.publishe

    Polar lipids of commercial Ulva spp. of different origins: profiling and relevance for seaweed valorization

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    Macroalgae of the genus Ulva have long been used as human food. Local environmental conditions, among other factors, can have an impact on their nutrient and phytochemical composition, as well as on the value of the seaweed for food and non-food applications. This study is the first to initiate a comparison between commercial Ulva spp. from different European origins, France (FR, wild-harvested Ulva spp.), and Portugal (PT, farm-raised Ulva rigida), in terms of proximate composition, esterified fatty acids (FA), and polar lipids. The ash content was higher in PT samples, while FR samples had higher levels of proteins, lipids, and carbohydrates and other compounds. The profile of esterified FA, as well as FA-containing polar lipids at the class and species levels were also significantly different. The FR samples showed about three-fold higher amount of n-3 polyunsaturated FA, while PT samples showed two-fold higher content of monounsaturated FA. Quantification of glycolipids and phospholipids revealed, respectively, two-fold and three-fold higher levels in PT samples. Despite the differences found, the polar lipids identified in both batches included some lipid species with recognized bioactivity, valuing Ulva biomass with functional properties, increasing their added value, and promoting new applications, namely in nutraceutical and food markets.UIDB/50011/2020+UIDP/50011/2020, UID/QUI/00062/2019, UIDB/50006/2020, UIDB/50017/2020+UIDP/50017/2020, LISBOA-01-0145-FEDER-402-022125, POCI-01-0145-FEDER-030962, BPD/UI51/5041/2017, BPD/UI51/5042/2018; EC/H2020/727892/EUinfo:eu-repo/semantics/publishedVersio

    Impact of deficit irrigation on grapevine cv. ‘Touriga Nacional’ during three seasons in Douro region: an agronomical and metabolomics approach

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    The introduction of irrigation in vineyards of the Mediterranean basin is a matter of debate, in particular in those of the Douro Demarcated Region (DDR), due to the limited number of available studies. Here, we aimed to perform a robust analysis in three consecutive vintages (2018, 2019, and 2020) on the impact of deficit irrigation on the yield, berry quality traits, and metabolome of cv. ‘Touriga Nacional’. Results showed that in the peaks of extreme drought, irrigation at 30% crop evapotranspiration (ETc) (R30) was able to prevent a decay of up to 0.4 MPa of leaf predawn water potential (ΚPd), but irrigation at 70% ETc (R70) did not translate into additional protection against drought stress. Following three seasons of irrigation, the yield was significantly improved in vines irrigated at R30, whereas irrigation at R70 positively affected the yield only in the 2020 season. Berry quality traits at harvest were not significantly changed by irrigation, except for Total Soluble Solids (TSS) in 2018. A UPLC–MS-based targeted metabolomic analysis identified eight classes of compounds, amino acids, phenolic acids, stilbenoid DP1, stilbenoid DP2, flavonols, flavan-3-ols, di-OH- and tri-OH anthocyanins, and showed that anthocyanins and phenolic acids did not change significantly with irrigation. The present study showed that deficit irrigation partially mitigated the severe summer water deficit conditions in the DDR but did not significantly change key metabolites.This research was funded by the VISCA project (Vineyards’ Integrated Smart Climate Application), funded by European Union’s Horizon 2020 research and innovation programme under grant agreement no. 730253. The RĂ©gion-Centre Val de Loire (France) supported this work under the grant agreement to Project VITI’ACTIF. The work was also supported by the “Contrato-Programa” UIDB/04050/2020 funded by Portuguese national funds through the FCT I.P. The work was also supported by FCT, CCDR-N (Norte Portugal Regional Coordination and Development Commission) and European Funds (FEDER/POCI/COMPETE2020) through the project AgriFoodXXI (NORTE01-0145-FEDER-000041) and the research projects BerryPlastid (PTDC/BIA-FBT/28165/2017 and POCI-01-0145-FEDER-028165), MitiVineDrought (PTDC/BIA-FBT/30341/2017 and POCI-01-0145- FEDER-030341), and GrapeInfectomics (PTDC/ASPHOR/28485/2017). A.T. was supported by a post-doctoral researcher contract/position within the project “BerryPlastid”. This work also benefited from the networking activities within the European COST Action CA 17111 INTEGRAPE, the CoLAB VINES & WINES, and the CoLAB 4FOOD—Collaborative Laboratory for Innovation in the Food Industry

    Mancha-foliar-de-Phaeosphaeria (mancha-branca-do-milho): fungo ou bactéria?

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    Diferentes espĂ©cies de fungos e a bactĂ©ria Pantoea ananatis (Pa) foram relatados como agentes etiolĂłgicos da doença mancha-de-Phaeosphaeria (MF) do milho. Este trabalho teve como objetivo a identificação molecular de fungos e bactĂ©rias que ocorrem em MF e sua etiologia. Os DNAs genĂŽmicos de 1) amostras de cada um dos quatro estĂĄgios das lesĂ”es MF; 2 ) bactĂ©rias e fungos isolados de lesĂ”es naturais (NPLS) e lesĂ”es artificial (AI), e 3) fungos isolados de lesĂ”es obtidas a partir de plantas inoculadas com Pa em casa de vegetação (GH) foram utilizados em reaçÔes de PCR com primers universais para genes rRNA de bactĂ©rias e fungos, e primers espĂ©cie especĂ­ficos para Pa. Amplicons bacterianos foram observados em todas as fases das lesĂ”es e amplicons fĂșngicos foram observados nos estĂĄdios 3 e 4. Amplicons bacterianos de amostras NPLS eram de Pa enquanto amplicons fĂșngicos foram de Phaeosphaeria sp. e Phoma sp. BactĂ©rias nas NPLS, GH e lesĂ”es AI foram identificadas como Pa, Pa e Bacillus subtilis, respectivamente, enquanto os fungos foram Epicoccum nigrum, Leptosphaeria sacchari, Cochliobolus geniculatus, Pithomyces chartarum, Alternaria alternata, A. ricini, Gibberella intricans, G. fujikuroi, Phaeosphaeria sp. , P. avenaria, Phoma sp., Phyllosticta sp., Sarocladium strictum, Glomerella graminicola e Cochliobolus heterostrophus. Os resultados indicam fortemente que Pa Ă© o agente causador da doença PLS do milho e que diferentes espĂ©cies de fungos oportunistas sĂł aparecem no final das fases de necrose de lesĂ”es causadas por Pa.bitstream/item/97961/1/bol-79.pd

    The role of climate, marine influence and sedimentation rates in late-Holocene estuarine evolution (SW Portugal)

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    Estuaries are sensitive to changes in global to regional sea level, to climate-driven variation in rainfall and to fluvial discharge. In this study, we use source and environmentally sensitive proxies together with radiocarbon dating to examine a 7-m-thick sedimentary record from the Sado estuary accumulated throughout the last 3.6 kyr. The lithofacies, geochemistry and diatom assemblages in the sediments accumulated between 3570 and 3240 cal. BP indicate a mixture between terrestrial and marine sources. The relative contribution of each source varied through time as sedimentation progressed in a low intertidal to high subtidal and low-energy accreting tidal flat. The sedimentation proceeded under a general pattern of drier and higher aridity conditions, punctuated by century-long changes of the rainfall regime that mirror an increase in storminess that affected SW Portugal and Europe. The sediment sequence contains evidence of two periods characterized by downstream displacement of the estuarine/freshwater transitional boundary, dated to 3570-3400 cal. BP and 3300-3240 cal. BP. These are intercalated by one episode where marine influence shifted upstream. All sedimentation episodes developed under high terrestrial sediment delivery to this transitional region, leading to exceptionally high sedimentation rates, independently of the relative expression of terrestrial/marine influences in sediment facies. Our data show that these disturbances are mainly climate-driven and related to variations in rainfall and only secondarily with regional sea-level oscillations. From 3240 cal. BP onwards, an abrupt change in sediment facies is noted, in which the silting estuarine bottom reaches mean sea level and continued accreting until present under prevailing freshwater conditions, the tidal flat changing to an alluvial plain. The environmental modification is accompanied by a pronounced change in sedimentation rate that decreased by two orders of magnitude, reflecting the loss of accommodation space rather than the influence of climate or regional sea-level drivers.FCT by Spanish Ministry of Science and Innovation [SFRH/BD/110270/2015, HAR2014-51830-P, HAR2011-29907-C03-00]FCTPortuguese Foundation for Science and Technology [PTDC/HISARQ/121592/2010]Instituto Dom Luiz-IDL [UID/GEO/50019/2013]info:eu-repo/semantics/publishedVersio
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