1,720,971 research outputs found
Study of innovative PET (polyethylene terephthalate) packaging for mayonnaise and evaluation of product shelf-life
No full textThe aim of this study was to assess the effects of various plastic-based packagings on quality changes in mayonnaise
during storage. The plastic packaging materials examined were PET, PET with an oxygen scavenger incorporated during extrusion (PET with Amosorb®), and PET coated with an oxygen barrier. Packaged mayonnaise was stored at 20°C and removed monthly for chemical, microbiological, sensory and rheological analysis over six months of storage. The ranking of oxidative stability in mayonnaise was glass = PET-Amosorb > PET-coating > PET. A sensory panel was unable to distinguish samples stored in glass from samples stored in PET-Amosorb or PET-coating. There was no significant difference in the linear viscoelastic properties of mayonnaise packaged in glass or plastic materials during storage
Use of Active Packaging for Increasing Ascorbic Acid Retention in a Beverage-Like System
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Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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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