1,721,096 research outputs found
L’eroe = ἥρως
No full textNel primo volume scopriremo la figura dell’ eroe – incarnata da figure esemplari quali Achille, Odisseo, Alcesti, Alessandro –, che è caratterizzata da eccezionali virtù, come il coraggio, l’ intelligenza, la generosità, la magnanimità, ma anche da un lato oscuro che colloca questi personaggi al centro di un vortice di energie tra loro contradditorie. Getteremo inoltre le basi per lo studio della lingua partendo dai fondamenti del greco antico: l’alfabeto, i suoni e la pronuncia
Metschnikowia pulcherrima selected strain for ethanol reduction in wine: Influence of cell immobilization and aeration condition
Full text linkOne of the most important problems in the winemaking field is the increase of ethanol content in wine. Wines with high ethanol level negatively affect wine flavor and human health. In this study, we evaluated the use of a selected strain of Metschnikowia pulcherrima in immobilized form and under different aeration conditions, to reduce the ethanol content evaluating the volatile profile of the resulting wines. In a preliminary screening the best conditions regarding free/immobilized cells, static/aerated fermentation and inoculation level were identified. Bench-Top fermentation trials with different aeration conditions showed that the use of M. pulcherrima selected strain with aeration flow of 20 mL/L/min during the first 72 h of fermentation, led an ethanol reduction of 1.38% (v/v) in comparison with Saccharomyces cerevisiae control strain. The analytical profile of the resulting wines did not show any negative feature. Indeed, the concentration of ethyl acetate, that above its sensory threshold impacts negatively the wine sensory profile, was found at an acceptable level. On the other hand, an increase in the concentration of significant fruity and flower compounds was found
Impact of mother sediment on yeast growth, biodiversity, and ethanol production during fermentation of Vinsanto wine
No full textThe aim of this study was to determine the impact of Vinsanto mother sediment both on the growth and
biodiversity of the yeast microflora and on the production of ethanol under natural and inoculated
fermentation of Vinsanto wines. To achieve this ten fermentation trials were carried out in 50-L barrels, five
without added mother sediment and five with. Moreover, eight of the ten barrels were inoculated with four
Saccharomyces cerevisiae wine strains, while the remaining two barrels were not inoculated and were used as
controls to study the behaviour of the natural yeast microflora in the absence and presence of mother
sediment. The counts of viable yeasts at three different sampling times indicated that the mother sediment
had a positive influence on yeast growth and persistence during fermentation. Molecular characterization of
the Saccharomyces type colonies isolated after three months of fermentation showed that the addition of
mother sediment had no effects on the dominance of the wine starters. In contrast, the mother sediment had
a positive influence on the biodiversity of the spontaneous S. cerevisiae yeasts. Moreover, possibly due to its
content of fatty acids and sterols and other nutrients, the addition of mother sediment also showed a positive
effect on the fermentative activities of wine yeasts as measured by their ethanol production
Microbiota of fermented beverages
No full textThis special issue collected recent developments on the microbiota of fermented beverages, from raw materials to the finished product, as well as the use of specific starter cultures. In particular, several studies investigated the occurrence and use of conventional and non-conventional yeasts in distilled alcoholic beverages, wine, and beer production, while other papers investigated probiotic and health-promoting compounds. Results indicated that the management of microbiota greatly improves the analytical, sensorial, and healthy characteristics of fermented beverages
Craft Beer: New Frontiers in Brewing Science
No full textRecently, both researchers and consumers have shown strong and growing interest in craft beer, which is characterized by its small batches, local breweries, and unique varieties. Craft Beer: New Frontiers in Brewing Science provides a comprehensive picture of the craft beer market, history and legal definition, brewing processes, and the qualities and styles of the end product. It emphasizes traditional and innovative microbial resources involved in the fermentation process, as well as safety, nutrition, and emerging problems, such as the sustainability of the production process. Craft Beer: New Frontiers in Brewing Science is the first and only scientific text to comprehensively summarize this exciting field. Researchers and students in interested brewing science, as well as industry specialists from beer companies will all benefit from this unique resource
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
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
- …
