1,720,958 research outputs found
Assessment of production efficiency, physicochemical properties and storage stability of spray dried chlorophyllide, a natural food colourant, using Gum Arabic, maltodextrin and soy protein isolate based carrier systems.
No full textThe aim of this research was to study spray drying as potential action to protect chlorophyllide fromenvironmental conditions for shelf-life extension and characterisation of the powders. Six formulations wereprepared with 7.5 and 10 g of carrier agents [gum Arabic (GA), maltodextrin (MA) and soybean proteinisolate (SPI)] . 100 mL of chlorophyllide solutions. The powders were evaluated for morphologicalcharacteristics (SEM), particle size, water activity, moisture, density, hygroscopicity, cold water solubility,sorption isotherms, colour and stability, during 90 days. All the powders were highly soluble, with solubilityvalues around 97%. A significant lower hygroscopicity was observed for GA powders, whilst the lower Xmvalues obtained by GAB equation fitting of the sorption isotherms was observed for the 7.5 g MA. 100 mLsamples. All formulations, but the 1 (7.5 g SPI . 100 mL of chlorophyllide), provided excellent stability to thechlorophyllide during 90 days of storage even at room temperature.[...
Assessment of production efficiency, physicochemical properties and storage stability of spray-dried propolis, a natural food additive, using gum Arabic and OSA starch-based carrier systems.
No full textGeographical Indication (GI) in Sri Lanka: A scientometric study of scholarly output
No full textThe Sri Lanka's research on Geographical Indication were examined in this study (GI). Between 1989 and 2021, research articles were indexed in the Web of Science (WoS) database. During this time, the researchers produced a total of 100 articles in the field of geographic indication. Each year, an average of 4.3 publications are published. With 16 papers published in 2021, it was the year with the most papers, but it received only 18 citations in 2016. There were only 6 articles with 225 citations in 2016. With 12 papers and 210 citations, Germany came out on top in the collaborative, followed by Italy (08 articles and 208 citations), which were the most collaborative countries according to citations. The USA contributed 7 articles and received 467 citations. India and Sri Lanka collaborated on two articles. Bandaranayake PCG, Favaro-Trindade CS, Katulanda P, and Ranasinghe P are the most prolific authors, with four articles each, but these two authors, Katulanda P, and Ranasinghe P, received 183 citations. India and Sri Lanka collaborated on two articles. Bandaranayake PCG, Favaro-Trindade CS, Katulanda P, and Ranasinghe P are the most prolific authors, with four articles each, but these two authors, Katulanda P, and Ranasinghe P, received 183 citations. The article that received the highest citations is "The cupric ion reducing antioxidant capacity and polyphenolic content of some herbal teas" and it received 294 citation
Stability of free and immobilized Lactobacillus acidophilus and Bifidobacterium lactis in acidified milk and of immobilized B-lactis in yoghurt
Get PDFThis study evaluated the stability of Bifidobacterium lactis (Bb-12) and of Lactobacillus acidophilus (La05) both free and immobilized in calcium alginate, in milk and in acidified milk (pH 5.0,4.4 and 3.8). The stability of immobilized B. lactis in yoghurt (fermented to pH 4.2), during 28 days of refrigerated storage was also evaluated. The efficiency Of two Culture media (modified MRS agar and Reinforced Clostridial Agar plus Prussian Blue) for counting of B. lactis ill yoghurt was determined. Lee's agar was used to count Streptococcus thermophilus and Lactobacillus delbrueckii ssp. bulgaricus when B. lactis were counted in the MRS medium. B. lactis and L. acidophilus in both free and immobilized forms presented satisfactory rates of survival ill milk and acidified milk because the average reduction of the Population was only one log cycle after 21 days of storage. The number of viable cells of immobilized B. lactis in yoghurt presented a gradual decline throughout the storage period, passing from 10(8) cfu/ml to no Count after 28 days of storage. When the Cultures were not in equilibrium just the selective medium was efficient in counting B. lactis ill yoghurt. The results showed that both microorganisms call be added to milk and acidified milk, because their population was only slightly affected during storage. The presence of traditional culture of yoghurt seems to be harmful for Survival of immobilized B. lactis and the immobilization in calcium alginate failed as an effective barrier to protect the cells in all analysed treatments.354167115115
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
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe 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
Get PDFWe 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
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