1,720,963 research outputs found
Influência do processamento sobre o perfil sensorial e a atividade antioxidante do suco de laranja
No full textO suco de laranja é um produto de grande importância para a economia nacional, tendo papel relevante na pauta de exportações brasileiras. A maior parte da produção brasileira de laranja é destinada à produção de suco concentrado congelado – FCOJ, que é predominantemente exportado para a Europa e América do Norte. O processamento do suco envolve as etapas de extração, filtração, concentração, mistura e de resfriamento. O tratamento térmico empregado na etapa de concentração para redução do volume de água, redução da carga microbiana e inativação enzimática, também é capaz de favorecer reações que alteram a composição do suco e promovem alterações sensoriais e degradação da vitamina C, além de arrastar e degradar compostos voláteis importantes para o sabor do suco. Os objetivos deste trabalho foram reunir informações referentes ao processamento do FCOJ e aos fatores relacionados às alterações de qualidade que podem ocorrer durante o processamento, avaliar o suco de laranja das principais etapas do processamento do FCOJ, de forma a avaliar as etapas mais críticas em relação às alterações no perfil sensorial e perda de qualidade e avaliar a atividade antioxidante total (AAT), os compostos fenólicos totais (TPC) e as características físico-químicas do suco de laranja das etapas do processamento do FCOJ. O suco de laranja das principais etapas do processamento do FCOJ foi avaliado por 12 julgadores selecionados e treinados utilizando a análise descritiva quantitativa (ADQ). Foram gerados 21 descritores para aparência (5), aroma (6), sabor (8) e textura (2). O suco das etapas de extração e filtração foram caracterizados por alta intensidade de sabor doce, aroma e sabor natural, aroma e sabor cítrico e aroma e sabor óleo, com perfil sensoriais semelhantes. O suco da etapa de extração também foi caracterizado por gomos, tanto...Orange juice is a important product to the national economy, with great relevance to the Brazilian exportations. The majority of Brazilian orange production is used in the frozen concentrated orange juice (FCOJ) production, which is mainly exported to North America and Europe. The FCOJ processing covers the extraction, filtration, concentration, blend and cooling steps. The heat treatment used in the concentration step to reduce the water activity, favors reactions that drastically changes the juice composition and promotes sensory changes, ascorbic acid degradation, and changes the volatile compounds important to the aroma and flavor of the juice. The aim of this work was to gather informations regarding the FCOJ processing and the factors related with the juice quality changes during the processing, to evaluate the orange juice from the main steps of the FCOJ processing, in order to identify the most critical steps regarding the sensory changes and loss of quality using QDA and to evaluate the total antioxidant activity (TAA), the total phenolic compounds (TPC) and the physicochemical characteristics of the orange juice from the steps of the FCOJ processing. The orange juice from the main steps of the FCOJ processing was evaluated by 12 selected and trained judges using QDA. 21 descriptors were generated for appearance (5), aroma (6), flavor (8) and texture (2). The juices from the extraction and filtration steps were characterized by high intensity of sweet aroma, natural aroma and flavor, citric aroma and flavor, and oil aroma and flavor, with similar profile. The juice from the extraction step was also characterized by vesicles from both appearance and texture. The juice from the concentration, blend and cooling steps were characterized by high intensity of cooked aroma and flavor, with similar profile. The sensory profile of the orange juice was noticeably affected... (Complete abstract click electronic access below
Influência do processamento sobre o perfil sensorial e a atividade antioxidante do suco de laranja
No full textO suco de laranja é um produto de grande importância para a economia nacional, tendo papel relevante na pauta de exportações brasileiras. A maior parte da produção brasileira de laranja é destinada à produção de suco concentrado congelado – FCOJ, que é predominantemente exportado para a Europa e América do Norte. O processamento do suco envolve as etapas de extração, filtração, concentração, mistura e de resfriamento. O tratamento térmico empregado na etapa de concentração para redução do volume de água, redução da carga microbiana e inativação enzimática, também é capaz de favorecer reações que alteram a composição do suco e promovem alterações sensoriais e degradação da vitamina C, além de arrastar e degradar compostos voláteis importantes para o sabor do suco. Os objetivos deste trabalho foram reunir informações referentes ao processamento do FCOJ e aos fatores relacionados às alterações de qualidade que podem ocorrer durante o processamento, avaliar o suco de laranja das principais etapas do processamento do FCOJ, de forma a avaliar as etapas mais críticas em relação às alterações no perfil sensorial e perda de qualidade e avaliar a atividade antioxidante total (AAT), os compostos fenólicos totais (TPC) e as características físico-químicas do suco de laranja das etapas do processamento do FCOJ. O suco de laranja das principais etapas do processamento do FCOJ foi avaliado por 12 julgadores selecionados e treinados utilizando a análise descritiva quantitativa (ADQ). Foram gerados 21 descritores para aparência (5), aroma (6), sabor (8) e textura (2). O suco das etapas de extração e filtração foram caracterizados por alta intensidade de sabor doce, aroma e sabor natural, aroma e sabor cítrico e aroma e sabor óleo, com perfil sensoriais semelhantes. O suco da etapa de extração também foi caracterizado por gomos, tanto...Orange juice is a important product to the national economy, with great relevance to the Brazilian exportations. The majority of Brazilian orange production is used in the frozen concentrated orange juice (FCOJ) production, which is mainly exported to North America and Europe. The FCOJ processing covers the extraction, filtration, concentration, blend and cooling steps. The heat treatment used in the concentration step to reduce the water activity, favors reactions that drastically changes the juice composition and promotes sensory changes, ascorbic acid degradation, and changes the volatile compounds important to the aroma and flavor of the juice. The aim of this work was to gather informations regarding the FCOJ processing and the factors related with the juice quality changes during the processing, to evaluate the orange juice from the main steps of the FCOJ processing, in order to identify the most critical steps regarding the sensory changes and loss of quality using QDA and to evaluate the total antioxidant activity (TAA), the total phenolic compounds (TPC) and the physicochemical characteristics of the orange juice from the steps of the FCOJ processing. The orange juice from the main steps of the FCOJ processing was evaluated by 12 selected and trained judges using QDA. 21 descriptors were generated for appearance (5), aroma (6), flavor (8) and texture (2). The juices from the extraction and filtration steps were characterized by high intensity of sweet aroma, natural aroma and flavor, citric aroma and flavor, and oil aroma and flavor, with similar profile. The juice from the extraction step was also characterized by vesicles from both appearance and texture. The juice from the concentration, blend and cooling steps were characterized by high intensity of cooked aroma and flavor, with similar profile. The sensory profile of the orange juice was noticeably affected... (Complete abstract click electronic access below
Influência do processamento sobre o perfil sensorial e a atividade antioxidante do suco de laranja
No full textO suco de laranja é um produto de grande importância para a economia nacional, tendo papel relevante na pauta de exportações brasileiras. A maior parte da produção brasileira de laranja é destinada à produção de suco concentrado congelado – FCOJ, que é predominantemente exportado para a Europa e América do Norte. O processamento do suco envolve as etapas de extração, filtração, concentração, mistura e de resfriamento. O tratamento térmico empregado na etapa de concentração para redução do volume de água, redução da carga microbiana e inativação enzimática, também é capaz de favorecer reações que alteram a composição do suco e promovem alterações sensoriais e degradação da vitamina C, além de arrastar e degradar compostos voláteis importantes para o sabor do suco. Os objetivos deste trabalho foram reunir informações referentes ao processamento do FCOJ e aos fatores relacionados às alterações de qualidade que podem ocorrer durante o processamento, avaliar o suco de laranja das principais etapas do processamento do FCOJ, de forma a avaliar as etapas mais críticas em relação às alterações no perfil sensorial e perda de qualidade e avaliar a atividade antioxidante total (AAT), os compostos fenólicos totais (TPC) e as características físico-químicas do suco de laranja das etapas do processamento do FCOJ. O suco de laranja das principais etapas do processamento do FCOJ foi avaliado por 12 julgadores selecionados e treinados utilizando a análise descritiva quantitativa (ADQ). Foram gerados 21 descritores para aparência (5), aroma (6), sabor (8) e textura (2). O suco das etapas de extração e filtração foram caracterizados por alta intensidade de sabor doce, aroma e sabor natural, aroma e sabor cítrico e aroma e sabor óleo, com perfil sensoriais semelhantes. O suco da etapa de extração também foi caracterizado por gomos, tanto...Orange juice is a important product to the national economy, with great relevance to the Brazilian exportations. The majority of Brazilian orange production is used in the frozen concentrated orange juice (FCOJ) production, which is mainly exported to North America and Europe. The FCOJ processing covers the extraction, filtration, concentration, blend and cooling steps. The heat treatment used in the concentration step to reduce the water activity, favors reactions that drastically changes the juice composition and promotes sensory changes, ascorbic acid degradation, and changes the volatile compounds important to the aroma and flavor of the juice. The aim of this work was to gather informations regarding the FCOJ processing and the factors related with the juice quality changes during the processing, to evaluate the orange juice from the main steps of the FCOJ processing, in order to identify the most critical steps regarding the sensory changes and loss of quality using QDA and to evaluate the total antioxidant activity (TAA), the total phenolic compounds (TPC) and the physicochemical characteristics of the orange juice from the steps of the FCOJ processing. The orange juice from the main steps of the FCOJ processing was evaluated by 12 selected and trained judges using QDA. 21 descriptors were generated for appearance (5), aroma (6), flavor (8) and texture (2). The juices from the extraction and filtration steps were characterized by high intensity of sweet aroma, natural aroma and flavor, citric aroma and flavor, and oil aroma and flavor, with similar profile. The juice from the extraction step was also characterized by vesicles from both appearance and texture. The juice from the concentration, blend and cooling steps were characterized by high intensity of cooked aroma and flavor, with similar profile. The sensory profile of the orange juice was noticeably affected... (Complete abstract click electronic access below
Síndrome de Noonan: Uma Revisão sobre Etiologia Genética, Diagnóstico e Abordagens Clínicas
No full textNoonan Syndrome (NS) is a heterogeneous genetic disorder that affects multiple organ systems and is one of the most prevalent among RASopathies. This study reviews the genetic etiology, diagnosis, and clinical approaches to NS, highlighting the main genetic mutations involved, especially in the RAS/MAPK pathway, and the phenotypic variability observed. The importance of genetic testing for diagnostic confirmation and appropriate patient management is also discussed, as well as the impact of clinical manifestations throughout life, including cardiovascular complications, cognitive difficulties, and mental health. It is concluded that, despite the lack of curative treatments, early interventions and multidisciplinary follow-up can significantly improve patients' quality of life.A Síndrome de Noonan (SN) é uma desordem genética heterogênea que afeta múltiplos sistemas orgânicos, sendo uma das mais prevalentes entre as rasopatias. Este estudo revisa a etiologia genética, diagnóstico e abordagens clínicas da SN, destacando as principais mutações genéticas responsáveis, especialmente nos genes da via RAS/MAPK, e a variabilidade fenotípica observada. Também discute a importância do teste genético para a confirmação diagnóstica e manejo adequado dos pacientes, bem como o impacto das manifestações clínicas ao longo da vida, incluindo complicações cardiovasculares, dificuldades cognitivas e saúde mental. Conclui-se que, apesar da ausência de tratamentos curativos, intervenções precoces e acompanhamento multidisciplinar podem melhorar significativamente a qualidade de vida dos pacientes
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
Noonan Syndrome: A Review on Genetic Etiology, Diagnosis and Clinical Approaches
No full textA Síndrome de Noonan (SN) é uma desordem genética heterogênea que afeta múltiplos sistemas orgânicos, sendo uma das mais prevalentes entre as rasopatias. Este estudo revisa a etiologia genética, diagnóstico e abordagens clínicas da SN, destacando as principais mutações genéticas responsáveis, especialmente nos genes da via RAS/MAPK, e a variabilidade fenotípica observada. Também discute a importância do teste genético para a confirmação diagnóstica e manejo adequado dos pacientes, bem como o impacto das manifestações clínicas ao longo da vida, incluindo complicações cardiovasculares, dificuldades cognitivas e saúde mental. Conclui-se que, apesar da ausência de tratamentos curativos, intervenções precoces e acompanhamento multidisciplinar podem melhorar significativamente a qualidade de vida dos pacientes.Noonan Syndrome (NS) is a heterogeneous genetic disorder that affects multiple organ systems and is one of the most prevalent among RASopathies. This study reviews the genetic etiology, diagnosis, and clinical approaches to NS, highlighting the main genetic mutations involved, especially in the RAS/MAPK pathway, and the phenotypic variability observed. The importance of genetic testing for diagnostic confirmation and appropriate patient management is also discussed, as well as the impact of clinical manifestations throughout life, including cardiovascular complications, cognitive difficulties, and mental health. It is concluded that, despite the lack of curative treatments, early interventions and multidisciplinary follow-up can significantly improve patients' quality of life
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
- …
