1,721,022 research outputs found
Influenza delle caratteristiche enologiche sulla successione di Saccharomyces bayanus e S. cerevisiae nei vini Recioto e Amarone della Valpolicella.
No full textUn totale 25 di ceppi di S. bayanus e S. cerevisiae isolati da vini Amarone e Recioto in fermentazione spontanea sono stati studiati riguardo ai caratteri enologici e qualitativi. Le due specie sono state confrontate analizzando la loro capacità di resistere a differenti concentrazioni di SO2 ed etanolo, la produzione di H2S e per il fenotipo killer. Nel corso di microvinificazioni effettuate in laboratorio è stata valutata la capacità di crescere a basse temperature, per il potere alcoligeno assoluto e sono stati confrontati i valori di alcuni prodotti della fermentazione tra i vini ottenuti da Saccharomyces bayanus e S. cerevisiae. I ceppi di S. cerevisiae hanno mostrato maggiore resistenza all'SO2, all'etanolo e un più alto potere alcoligeno assoluto, mentre quelli di S. bayanus hanno evidenziato una migliore capacità di crescita a 6°C. E' stata osservata una prevalenza di fenotipi sensibili alla tossina killer K2 nella specie S. bayanus e una frequenza maggiore di medio e alto produttori di H2S in S. cerevisiae. Dalle analisi chimiche effettuate sui vini fermentati, la concentrazione degli zuccheri residui, dell'etanolo, del glicerolo e il valore di pH sono risultati significativamente differente. I differenti tratti enologici che caratterizzano S. bayanus e S. cerevisiae influenzano la loro evoluzione durante i processi spontanei di fermentazione dei vini Amarone e Recioto
Volatiles metabolites produced in wine by mixed and sequential of Hanseniaspora guilliermondii or Kloeckera apiculata or Saccharomyces cerevisiae
No full textNS-LAB microbiota during ripening of Caciotta cheeses obtained from raw, homogenized and pasteurized milk
No full text
Influenza del grado di infezione da Botrytis cinerea sulle attività tirosinasi e laccasi dei mosti.
No full textInfluenza del grado di infezione da Botrytis cinerea sulle attività tirosinasi e laccasi dei mosti
BIOMETRIC STUDY OF ACETOIN PRODUCTION IN HANSENIASPORA GUILLIERMONDII AND KLOECKERA APICULATA
No full textCharacterization of Mediterranean mussels (Mytilus galloprovincialis) harvested in Adriatic Sea (Italy)
No full textThe aim of this work was to analyse some quality parameters of Mytilus galloprovicialis harvested monthly in the period ranging from
April 2002 and February 2003 in a longline oV-shore mussel farm, located in the Adriatic Sea, near Cattolica (Emilia Romagna Region,
Italy). After harvesting, the samples were analysed in order to determine the counts of fecal coliforms (FC) and Escherichia coli, the presence
of Salmonella, as prescribed by Italian and European Community regulations, and other pathogens (Vibrio parahaemolyticus, Listeria
monocytogenes), as well as the meat yield and its proximate composition, its Fe, Cr, Cd, Zn, Pb and Cu content, the total lipids of the
meat and their speciWc composition. The results obtained evidenced that many of the parameters studied, i.e. the meat proximate composition,
the lipid fatty acid composition and the microbiological indices, were subjected to seasonal Xuctuations. In particular, the microbiological
data showed that 4 mussel samples (June, December, January and February) out of 12 did not match the limit imposed by Italian
law and Emilia Romagna protocol concerning the FC and E. coli counts. While L. monocytogenes and Salmonella spp. were never
detected in all the samples analysed, three samples (April, January and February) were positive for the presence of V. parahaemolyticus.
No seasonal Xuctuations were evidenced for Fe, Cr, Cd, Zn, Pb and Cu contents, always under the limits imposed by Italian law
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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