1,720,955 research outputs found
Agro-Food By-Products as Sustainable Resources: Exploring Analytical Approaches for the Characterization and Development of Functional Foods and Active Packaging in a Circular Economy Perspective
No full textI sottoprodotti industriali agroalimentari come bucce, semi e fibre sono ricchi di composti bioattivi, tra cui antiossidanti, composti fenolici, carotenoidi e fibre alimentari. Molti di questi composti sono già conosciuti, e presentano proprietà antiossidanti, antinfiammatorie e antimicrobiche, che li rendono validi per nuove applicazioni, tra cui nell'industria alimentare, farmaceutica e cosmetica. Questa ricerca ha evidenziato il potenziale dei sottoprodotti di carciofo e pomodoro come fonti alternative di composti bioattivi ad alto valore aggiunto, per applicazioni industriali.
Lo studio sui sottoprodotti del carciofo ha previsto l'utilizzo tecniche analitiche come la spettroscopia infrarossa a trasformata di Fourier (FTIR-ATR), saggi spettrofotometrici e cromatografia liquida (HPLC) per indagare la loro composizione chimica, in particolare i profili dei carboidrati, per applicazioni come la produzione di pasta nutraceutica arricchita con queste matrici. Sono stati analizzati anche gli effetti dei trattamenti industriali sulle proprietà dei sottoprodotti del carciofo, per capire come la lavorazione influisca sulla sua composizione chimica di queste matrici. I sottoprodotti del pomodoro, compresi bucce e semi, sono stati valutati per il loro potenziale nutrizionale e funzionale, evidenziando l'importanza delle condizioni di conservazione per la gestione stagionale dei sottoprodotti. I componenti bioattivi come licopene, β-carotene e composti fenolici sono stati caratterizzati utilizzando saggi spettrofotometrici e tecniche avanzate come l'estrazione con fluido supercritico e la cromatografia con fluido supercritico accoppiata alla spettrometria di massa (SFE-SFC-QqQ/MS). La ricerca ha dimostrato che le formulazioni di imballaggi a base biologica possono eguagliare o superare le prestazioni di conservazione delle plastiche tradizionali, con eccellenti capacità di conservazione a breve termine nel caso della bioplastica.
Un altro lavoro ha riguardato l'ottimizzazione delle condizioni di estrazione di Pressurized Liquid Extraction (PLE) mediante Response Surface Methodology (RSM) per migliorare l'efficienza, massimizzando il recupero di composti bioattivi con forti proprietà antiossidanti. La caratterizzazione di questi estratti ha rivelato un'inibizione enzimatica contro gli enzimi correlati alla malattia di Alzheimer e ha mostrato un potenziale antinfiammatorio e neuroprotettivo. Il profilo metabolomico e gli studi di docking molecolare in silico hanno identificato interazioni tra enzimi chiave e flavonoidi abbondanti, evidenziando il potenziale di questi estratti nello sviluppo di agenti neuroprotettivi.
Sono state esplorate anche applicazioni innovative, tra cui tecniche di incapsulamento come l'essiccazione spray e la nanoemulsione, per stabilizzare gli estratti ricchi di carotenoidi e migliorarne la biodisponibilità in sistemi alimentari e nutraceutici. È stato sviluppato uno spray antiossidante a base biologica, ricco di composti fenolici e carotenoidi, come alternativa naturale e sostenibile ai conservanti sintetici, che riduce efficacemente l'ossidazione dei lipidi negli alimenti deperibili. Sono stati sviluppati rivestimenti biodegradabili arricchiti con polifenoli e flavonoidi derivati dal pomodoro per migliorare le proprietà idrofobiche e di barriera dei materiali a base di cellulosa, offrendo soluzioni sostenibili per l'imballaggio funzionale. Questi progressi sottolineano il potenziale dei sottoprodotti agroalimentari come risorse sostenibili per ridurre i rifiuti, migliorare la qualità degli alimenti e sostenere pratiche industriali rispettose dell'ambiente. Questo lavoro ha contribuito in modo significativo allo sviluppo di alternative alla plastica in un contesto di economia circolare e si allinea con gli obiettivi globali di sostenibilità.Agro-food industrial by-products such as peels, seeds and fibres are rich in bioactive compounds including antioxidants, phenolic compounds, carotenoids and dietary fibres. These compounds have antioxidant, anti-inflammatory and antimicrobial properties, making them valualble for other applications includin in food indusrty , pharmaceutical and cosmetic industries. This research highlighted the potential of artichoke and tomato by-products as alternative sources of high value compounds for industrial applications.
The study on artichoke by-products used analytical techniques such as Fourier transform infrared spectroscopy (FTIR-ATR), spectrophotometric assays and ultra-high performance liquid chromatography (HPLC) to investigate their biochemical composition, particularly carbohydrate profiles, for applications such as nutraceutical pasta production. The effects of industrial treatments on the properties of artichoke by-products were also analysed to understand how processing affects their functional suitability.
Tomato by-products, including peels and seeds, were evaluated for their nutritional and functional potential, highlighting the importance of storage conditions for seasonal by-product management. Bioactive components such as lycopene, β-carotene and phenolic compounds were characterised using spectrophotometric assays and advanced techniques such as supercritical fluid extraction-supercritical fluid chromatography coupled with mass spectrometry (SFE-SFC-QqQ/MS). The research showed that bio-based packaging formulations could simulate the storage performance of traditional plastics, with excellent short-term preservation capabilities in case of bioplastic. Green extraction processes were optimized using Response Surface Methodology (RSM) to enhance Pressurized Liquid Extraction (PLE) efficiency, maximizing the recovery of bioactive compounds with strong antioxidant properties. Characterizations of these extracts revealed enzymatic inhibition against Alzheimer’s disease-related enzymes and showed anti-inflammatory and neuroprotective potential. Metabolomic profiling and in silico molecular docking studies identified interactions between key enzymes and abundant flavonoids, highlighting the potential of these extracts in developing neuroprotective agents.
Innovative applications were also explored, including encapsulation techniques like spray drying and nanoemulsion, to stabilize carotenoid-rich extracts for improved bioavailability in food and nutraceutical systems. A bio-based antioxidant spray, rich in phenolic compounds and carotenoids, was developed as a natural, sustainable alternative to synthetic preservatives, effectively reducing lipid oxidation in perishable foods. Biodegradable coatings enriched with tomato-derived polyphenols and flavonoids were developed to enhance the hydrophobic and barrier properties of cellulose-based materials, offering sustainable solutions for functional packaging. These advancements underscore the potential of agro-food by-products as sustainable resources for reducing waste, improving food quality, and supporting environmentally friendly industrial practices. This work contributed significantly to the development of alternative to plastics in a context of circular economy and aligns with global sustainability goals
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
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
Author Under Sail The Imagination of Jack London, 1893-1902
No full textIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Intro -- Title Page -- Copyright Page -- Dedication -- Contents -- Acknowledgments -- Introduction -- 1. Spirit Truth -- 2. From Absorption to Theatricality and Back Again -- 3. "I Will Build a New Present" -- 4. Sons as Authors -- 5. Fathers as Publishers -- 6. The Daughter as Author -- 7. Lovers as Authors -- 8. At Sea with the Family -- 9. Yellow News, Yellow Stories -- 10. The Return Home -- Notes -- Bibliography -- Index -- About Jay WilliamsIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Description based on publisher supplied metadata and other sources.Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, YYYY. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries
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