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La qualità nutrizionale dei vegetali: effetto della frigoconservazione sul contenuto in acido ascorbico del finocchio
No full textIn this work the nutritional quality of fennel stored under controlled conditions (90% R.H. and 6 °C) was investigated over a period of 32 days. The ascorbic acid content was chosen as "quality marker" considering also the influence of the sample size. In order to minimize the ascorbic acid losses during the analyses, a rapid extraction methodology was set up. The analytical data showed that the ascorbic acid content in the product had a sharp linear decrease after 4 days, with a total loss of about 50% of the initial content. Increasing the storage time did not further affect the ascorbic acid content of the vegetables that, afterwards, remained constant for about 2 weeks. Furthermore the ascorbic acid content was no influenced by the size of the vegetables
Nutritional quality of vegetables: effect of chilling on the ascorbic acid content of fennel.
No full textA fundamental part of the human diet should be represented by fruits and vegetables because of their content in fiber, vitamins and antioxidants that can play an important role in reducing the risks of developing several diseases, among which cancer represents one of the most important. The shelf-life of vegetables can last from a few days to several weeks and refrigeration is a preservation technique often utilized to extend the shelf-life of these products; however, also with refrigeration the final content in vitamins and antioxidants can be significantly reduced during the storage.
Fennel is a vegetable harvested in the period November-June and finds a wide utilization in the Italian diet, especially in the Southern regions of Italy. Its shelf-life normally spans over a period of 2-7 days and in order to extend its commercialization period the product is often refrigerated for several days before arriving on the tables of the consumers. However, it should be pointed out that the scientific papers dealing with the evaluation of fennel quality during storage are limited.
In this work we have studied the nutritional quality of fennels stored under controlled conditions of humidity and temperature (90% R.H. and 6°C respectively) over a period of days and weeks, and the ascorbic acid content was chosen as "quality marker". In order to minimize the ascorbic acid losses during the analyses, a rapid extraction methodology has been set up. The analytical data have shown that the ascorbic acid content in the product had a sharp linear decrease in the first 4 days, with a total loss of about 50% of the initial content. Increasing the storage time did not further affect the ascorbic acid content of the vegetables, that, afterwards, remained constant for more than 2 weeks
Nutritional quality of vegetables: effects of chilling on the ascorbic acid content of fennel.
No full text
Nutritional quality of vegetables: effect of chilling on the ascorbic acid content of fennel
No full textEffect of chilling on the ascorbic acid content of fennel during storage
No full textThe ascorbic acid content in fennel during storage at 6 °C and 90% R.H. was monitored over a 32 days period and a rapid extraction method was developed to quickly analyze the samples. The concentration of the acid showed a marked decrease during the first 4 days of storage, with a reduction of about 50%. In the following two weeks the ascorbic acid content remained almost unchanged, but extending the storage up to 32 days caused further substantial losses and the final ascorbic acid concentration reached 25% of the initial one. This phenomenon was found to be independent from the sample size
Studio di sistemi di conservazione per il prolungamento della shelf-life di finocchi freschi
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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
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