1,720,954 research outputs found
Influence of familiarity on consumer acceptance of value-added products from Justicia heterocarpa leaves
No full textJournal ArticleThis study investigated the sensory perception and consumer acceptability of value-added products derived from Justicia heterocarpa, an underutilized indigenous leafy vegetable with potential nutritional benefits. A total of 110 participants, comprising 80 semi-trained students unfamiliar with J. heterocarpa and 30 untrained university workers familiar with J. heterocarpa in term of consumption and utilization. Four samples (freshly harvested, blanched dried, unblanched dried, and fermented) were tested for consumer acceptability using a 9-point hedonic scale. The results revealed a significant influence of the panelists on flavor (p < 0.001) and overall acceptability (p = 0.003) among familiar and unfamiliar panelists. Unfamiliar panelists rated the flavor and general acceptability of the fermented vegetables higher. There were significant differences in color (p < 0.0001), flavor (p = 0.0002), and general acceptability (p = 0.0235) between the familiar and unfamiliar groups. Correlation analysis revealed a positive correlation between general acceptability of flavor (r = 0.81) and texture (r = 0.65). Principal component analysis identified flavor and texture as the primary drivers of overall acceptance. These findings offer valuable insights into the development of palatable processed J. heterocarpa. These findings underscore the importance of carefully considering the effects of different processing methods when formulating product development strategies to enhance consumer acceptance
Effect of processing methods on the micronutrient profile, colour, and anti- nutritive components of justicia heterocarpa (mwidu)
No full textJournal ArticleJusticia heterocarpa (mwidu) is a popular indigenous leafy vegetable picked wild in rural regions of
Morogoro, Tanzania, during the wet seasons. This research examined the impact of processing on
micronutrients, total phenols, and anti-nutrient content. The fresh leaves (FL) underwent direct
shade drying (UBLDDR), blanched shade drying (BLDR), blanched oven drying (BLDO),
fermentation (FFL), and gas and microwave cooking (FLCO5, FLCO10, and FLMCO2). Vitamins,
chlorophyll, minerals, phenolic compounds, and anti-nutrients were analyzed. All laboratory
experiments adhered to procedures and guidelines. The pH dropped more significantly to <3.5 in a 3% salt-3% sugar brine solution with 1.328 ± 0.006 mg/100 g of lactic acid compared to its
counterpart. Blanched leaves dried in 5 days, but unblanched leaves took 15 days. Fermented
samples demonstrated a notable reduction in total chlorophyll concentration (0.0964 ± 0.075 mg/g)
compared to other processing techniques. The nutritional and anti-nutritional composition of
Justicia heterocarpa showed significant change (P < 0.05) depending on processing methods. The
results indicated a significant loss of vitamin C in the fermented and ten-minute cooked samples, at
74.57% and 61.64%, respectively.Cooked FLMCO2 (107.4%, 11.29 ± 0.03 mg/100g) and FLCO5
(86.26%, 10.51 ± 0.02 mg/100g) exhibited more than a two-fold increase in beta-carotene
compared to fresh leaves (3.67 mg/100g). In comparison to alternative processing procedures,
samples cooked for 10 minutes exhibited significant mineral leaching, whereas unblanched direct
shade drying preserved the highest mineral concentration. Fermented samples (532.83 ± 14.91
GAE/100 g) exhibited a 64.19% increase in total Phenolic compounds compared to fresh leaves
(190.83 ± 14.91 GAE/100 g). Nonetheless, tannins increased by 68.1% (254.44 ± 7.45 GAE/100g)
in the fermented samples. Samples exposed to extended cooking (17.8 ± 3.17 mg/100 g) and
fermentation (40.28 ± 3.34 mg/100 g) exhibited the lowest levels of phytates. The oxalate
concentration was significantly decreased in the cooked samples. Justicia heterocarpa may serve
as a sustainable food supply in areas of Tanzania experiencing nutritional deficits
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
- …
