87,060 research outputs found
Modello multicriteriale partecipato per la valutazione di opzioni di sviluppo strategico in Val di Non
No full textStable nitrogen isotopic composition of wine: a preliminary investigation
No full textThe 15N/14N ratio has been measured in several foods to trace geographical origin
and agricultural systems, but not yet in wine. In this work we developed a method for
measuring 15N/14N in bulk wine, following dealcoholisation and dehydration. The δ15N of
wine did not change after freeze-drying the sample or evaporating it under vacuum, obtaining adequate repeatability. The addition of nitrogen rich substances to must can affect the δ15N of wine. δ15N analysis of 170 wine samples from 17 Italian regions showed differences between red and white wines and between region
L’independance des juges et le droit de l?Union Europeenne du point de vue l’autonomie istitutionnelle (et procedurale) des etats membres
No full textPer comprendere appieno la giurisprudenza della Corte di giustizia dell'Unione europea (CGUE) relativa all'indipendenza dei giudici polacchi e per valutarne la piena portata, non è sufficiente discutere dellla costituzionalizzazione del diritto dell'Unione Europea, di cui l'art. 2 TEU relativo ai suoi valori è uno degli elementi più visibili; occorre ripercorrere un principio fondamentale e consolidato del diritto comunitario e dell'Unione, quello dell'autonomia procedurale e istituzionale degli Stati membri, diretta conseguenza del principio di attribuzione. Il principio di attribuzione, va sottolineato, era già centrale sia nel Trattato di Parigi del 18 aprile 1951 che istituisce la Comunità europea del carbone e dell'acciaio, sia nei Trattati di Roma del 25 marzo 1957 che istituivano la Comunità economica europea e Comunità europea dell'energia atomica. L'iscrizione formale di questo principio nel TUE da parte del Trattato di Lisbona ha solo reso esplicito un principio consolidato di diritto internazionale pubblico, al quale gli autori dei trattati istitutivi non hanno in alcun modo voluto derogare.Afin de bien comprendre la jurisprudence de la Cour de Justice de l’Union européenne (CJUE) relative à l’indépendance des juges polonais et d'en mesurer toute la portée, il ne suffit pas de disserter sur la constitutionnalisation du droit de l’Union européenne, dont l’art. 2 TUE relatif à ses valeurs est l’un des éléments les plus visibles ; il est nécessaire de faire un retour sur un principe fondamental et établi depuis longtemps du droit communautaire et de l’Union, celui de l’autonomie procédurale et institutionnelle des Etats membres, conséquence directe du principe d’attribution. Le principe d’attribution, il faut le souligner, était déjà central aussi bien dans le traité de Paris du 18 avril 1951 établissant la Communauté européenne du charbon et de l’acier, ainsi que dans les traités de Rome di 25 mars 1957 établissant la Communauté économique européenne et la Communauté européenne de l’énergie atomique. L’inscription formelle de ce principe dans le TUE par le traité de Lisbonne n’a fait que rendre explicite un principe bien établi du droit international public, auquel les auteurs des traités fondateurs n’avaient en rien voulu déroger
Characterization of L-theanine in tea extracts and synthetic products using Stable Isotope Ratio Analysis
No full textL-theanine involves a great number of health benefits and dietary supplements containing this molecule are becoming increasingly popular. There is, therefore, a growing need to find ways to discriminate between natural L-theanine extracted from tea leaves and the cheaper, synthetic one obtained using specific bacterial enzymes. A first attempt of stable isotope ratio analysis characterization of the possible synthetic adulterant L-theanine (δ13C of -14.3±1.5‰), obtained from vegetable substrates with C4 photosynthetic cycle, and of the more expensive natural L-theanine (δ13C of -24.4±1.3‰), extracted from Camellia sinensis plants with C3 photosynthetic cycle, is reported here
VALUTAZIONE DELLE OPZIONI DI SVILUPPO STRATEGICO DEL TERRITORIO DELLA VAL DI NON: UN APPROCCIO MULTICRITERIALE ED INCLUSIVO
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Isotopic and elemental characterisation of Italian white truffle: a first exploratory study
No full textWhite truffle (Tuber magnatum Pico) is a typical product of some Italian regions, and due to its organoleptic properties it is of high economic value. To date, there is no available information on the elemental and isotopic composition of this product. For the first time the characteristic value ranges of the stable isotope ratios of the bio-elements as a whole (δ13C, δ15N, δ18O and δ34S) and of the concentration of some macro- and micro-elements (Ag, Al, B, Ba, Ca, Cd, Cr, Cu, Fe, K, Li, Mg, Mn, Na, Ni, Pb, Sr, Zn) are now available, determined in white truffles produced in different areas of Italy (Toscana, Molise, Marche, Piemonte - Langhe, Monferrato-) and in Croatia. All the samples analysed showed values for the toxic, potentially toxic or allergenic elements lower than the legal limits. Furthermore, the ranges of variability of some elements or elements ratios (i.e. Na, B, Mg/Ca, Ba/Ca, Sr/Ca, Li/Fe, B/Al, Ba/Al) and stable isotope ratios (δ34S and δ18O) seem to be different according to the geographical origin. Therefore, the results of this first exploratory work highlight the possibility of characterising white truffles of different provenance, and suggest widening the scope of the survey throughout Italy and foreign region
Reference materials and calibration for stable isotope ratio analysis in food
No full textThe stable isotope ratios of the five bio elements carbon, nitrogen, hydrogen, oxygen and sulphur have frequently been used in the last few decades to determine the authenticity and traceability of many food commodities. In this paper, issues regarding calibration, suitable reference materials and correct methods to obtain reliable results with this potentially powerful technique are critically discussed and commente
Article I-50 - Transparence des travaux des insitutions, organes et organismes de l'Union
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