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Agri-food by-products and lactic acid bacteria as a strategy to improve the quality and functionality of “Primo Sale” cheese.
No full textIn Europe alone, 22.4 million tonnes of food by-products (BPs) are generated each year. However, they still contain valuable compounds, which can be valorised by the food industry. For this reason, some BPs have been selected to be used as ingredients for the production of “Primo Sale” cheese.
Orange peels (Citrus) and Equisetum arvense (Eq), a weed plant, were chemically and functionally characterised and used for the formulation (2 % and 1 % w/w, respectively) of “Primo Sale” cheese. Three functional Lactic Acid Bacteria (LAB) were also used in addition to the starters. The cheese samples were monitored over 29 days at 4 °C for the indigenous microbiota, starters’ viability, volatile compounds and antioxidant activity. Results showed that the addition of the BPs did not
affect the starters’ viability, which was higher than 8 Log units, while growth of spoilage microbiota was inhibited. Inhibition of Pseudomonas sp. was observed in the cheeses added with the LAB. Moreover, Citrus and Eq had a synergic effect resulting in 2 Log units lower than the control with LAB. Antioxidant activity of the cheeses increased with the addition of both BPs compared to the controls, with the best results observed for the Citrus-added cheeses. Furthermore, all the matrices showed a significant increase of the antioxidant activity over time (p<0.05),
doubling at the end of storage. The analysis of volatile compounds showed that the content of the organic acids increased overtime for the samples with the presence of residues, and particularly for short-chain fatty acids. In conclusion, the addition of BPs to the cheeses positively impacted the shelf-life without affecting the growth of the LAB strains. In addition, they improved certain properties such as the antioxidant one and allowed differentiation in the volatile profile. Finally, the use of these substances can increase the prebiotic effect and fibre content
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
Hydrophobicity of the cell wall in the cell-cell interaction of Saccharomyces cerevisiae
No full text
Ruolo dell'idrofobicità della superficie cellulare in lieviti flocculanti del genere Saccharomyces
No full textCombined effects of thermal treatments and composition on Listeria monocytogenes survival in meat products
No full textVariations 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
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