cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.9900167.v1
title: Concentrated beta-galactosidase and cell permeabilization from Saccharomyces fragilis IZ 275 for beta-galactosidase activity in the hydrolysis of lactose

description: Abstract The cheese whey shows an organic nutrient charge that can be used to obtain metabolites of interest by biotechnology of microorganisms. Thus, fermentative processes for enzyme production, in particular beta-galactosidase becomes feasible. The enzyme plays an important role in the biotech food industry to obtain milk and dairy products with low lactose content for consumption by intolerant individuals. The objective of this work was to determine the enzyme activity of the concentrated beta-galactosidase (CBG) and the permeabilized cells (PC) both obtained from Saccharomyces fragilis IZ 275. The enzyme beta-galactosidase obtained from the fermentation of Saccharomyces fragilis IZ 275 in cheese whey was used to determine the optimal conditions for the hydrolysis of lactose solution at 1% (w/v). Response Surface Methodology (RSM) by Box-Behnken Design (BBD) was employed to determine beta-galactosidase activity for such factors pH, temperature and enzyme concentration suitable for the lactose hydrolysis. Based on the statistical analysis, the optimum operational conditions for maximizing lactose hydrolysis thus optimizing the enzyme activity for CBG were, temperature 30 °C, pH 6.0 and enzyme concentration 3% (v/v) and for PC was temperature 44 °C, pH 7.0 and enzyme concentration 4% (v/v).
DOI: 10.6084/m9.figshare.9900158.v1
title: Preparation of beta-carotene nanoemulsion and evaluation of stability at a long storage period

description: Abstract Carotenoids have a low solubility in water, and therefore their incorporation in foods is impaired. The nanoemulsions are able to protect these compounds and enhance bioavailability. The objective of this study was to develop nanoemulsions with added beta-carotene, evaluating the influence of process variables and the stability at a long storage period. To assess the effects of these variables a Box-Behnken design was performed. The best condition to form a stable emulsion was 7% (w.w-1) of surfactant and 40 °C. All formulations subjected to a thermal stress test remained stable after the test. The use of a higher concentration of soy lecithin (7%, w.w-1) in the development of emulsions conferred greater stability after a freeze-defrost cycle. Furthermore, with this concentration of surfactant, and using a high-speed homogenizer under conditions of 10,000 rpm, 30 °C, and 20 min of shaking time, it was possible to develop stable nanoemulsion with an average diameter of 429 nm. Moreover, the zeta potential indicated system stability. Thus, it was possible to obtain stable nanoemulsion without the use of subsequent equipment, which makes the process less expensive.
DOI: 10.6084/m9.figshare.9900161.v1
title: Case study: influence of performance levels of ABNT NBR 15575 without consumption of materials used in reinforced concrete structures

description: Abstract The Brazilian construction industry still discusses the consequence of the Performance Standard on housing developments. According to ABNT NBR 15575 [1], the systems that compose residential buildings need to meet minimum performance requirements. Among the systems, the structural must reach a minimum Service Life (SL) of 50 years, or intermediate or higher that corresponds to 63 and 75 years, respectively. The industry also debates the impact and viability of increasing the SL of reinforced concrete structures. Therefore, this article aimed to analyze a single reinforced concrete building designed for the 3 SL specified by ABNT NBR 15575 [1]. The study focused on the total consumption of steel and concrete. The structure’s designed conditions of exposure were varied for each performance level, based on the 4 environmental exposure classes (EEC) of ABNT NBR 6118 [3] and ABNT NBR 12655 [11], totalizing 12 situations. It was noted that the increased performance level increases consumption of materials, and the designs made for EEC IV consumed 12.3% and 16.2% more steel and concrete at the intermediate and superior performance levels respectively, when compared to the minimum performance level.
DOI: 10.6084/m9.figshare.9900155
title: Assessment of the use of the hydrolyzed liquid fraction of the kiwicha grain in the fermentation process of probiotic drinks from tarwi juice: microbiological, chemical and sensorial analysis

description: Abstract Non-diary probiotic drinks are of interest to the consumers who suffer from lactose intolerance and allergenicity when consuming milk and its derivatives. Its production requires substrates that favor the viability of probiotics in the process and storage. This research assessed the use of the liquid fraction obtained from the enzymatic hydrolysis of kiwicha grain including the microbiological, chemical and sensory characteristics of probiotic drinks of tarwi juice during fermentation and storage using: Lactobacillus paracasei , B. bacterium longum and a culture of both microorganisms. The viability of probiotics in drinks improved with the increase of hydrolyzed kiwicha in the composition of the drink during fermentation and post fermentation, and showed good tolerance to pH. The viability of the Bifid bacterium longum was reduced with the decrease in the pH, but improved in the co-culture with lactobacillus paracasei . The sensory characteristics of the obtained drinks were favorable.
DOI: 10.6084/m9.figshare.9900143
title: Appliance of a high pressure semi-batch reactor: supercritical transesterification of soybean oil using methanol

description: Abstract This work presents the results of a supercritical transesterification process of soybean oil using methanol, performed in a laboratory high pressure semi-batch reactor. A full description of the equipment and a standard operating procedure are also provided. Since fossil fuels are not renewable, biofuels such biodiesel, have gained attention over the past decades. Biodiesel is the result of the transesterification of triacylglycerols in vegetable oils or animal fats and it works as an alternative fuel for compression-ignition engines. Methanol was chosen to perform the reaction, at molar ratios of 1:24 (oil: alcohol) and 0.1 (CO 2:methanol), temperature of 280 °C and pressure of 130 bar. In order to decrease the reaction time, CO2 in the supercritical state was used as cosolvent. The yield of biodiesel produced was equal to 95.19% in only ten minutes of reaction. A high yield of methyl esters (84.41%) was detected by gas chromatography-mass spectrometry. In general, 10 compounds were identified. The component in higher concentration was linoleate, followed by methyl hexadecanoate, oleic acid methyl ester and methyl stearate. The ester conversion rate means that the process with supercritical methanol can be successfully applied to produce biodiesel.
DOI: 10.6084/m9.figshare.9900146
title: Color assessment by different techniques of gilthead seabream (Sparus aurata) during cold storage

description: Abstract Overall objective of the study was assessment for freshness parameters of gilthead seabream (Sparus aurata). The freshness was determined by two conventional method (i.e. Minolta color measurement method) was compared with a novel machine vision technology (i.e image color analysis method). The quality characteristics related to the freshness of the fresh fish are traditionally based on the color measurements of the whole fish by using Minolta color measurement method. This study aimed to compare the use of the image analysis method to see whether the freshness of seafood can be measured more accurately. Our analysis proved more exact and reliable results in the freshness evaluation of the Sparus aurata based on the color changes in the eyes, gill and skin of the fish. This study revealed that image analysis can be successfully used for the assessment of fish freshness by measuring the color parameters of images captured from skin, gill and eye of the fish during cold storage. It is easy and practical to use image color analysis method in the quality control evaluation of fish freshness measurement. This analysis method can be suitable for use in continuous process at the seafood processing factories (e.g. before packaging to sort out fresh vs old fish automatically).
DOI: 10.6084/m9.figshare.9900155.v1
title: Assessment of the use of the hydrolyzed liquid fraction of the kiwicha grain in the fermentation process of probiotic drinks from tarwi juice: microbiological, chemical and sensorial analysis

description: Abstract Non-diary probiotic drinks are of interest to the consumers who suffer from lactose intolerance and allergenicity when consuming milk and its derivatives. Its production requires substrates that favor the viability of probiotics in the process and storage. This research assessed the use of the liquid fraction obtained from the enzymatic hydrolysis of kiwicha grain including the microbiological, chemical and sensory characteristics of probiotic drinks of tarwi juice during fermentation and storage using: Lactobacillus paracasei , B. bacterium longum and a culture of both microorganisms. The viability of probiotics in drinks improved with the increase of hydrolyzed kiwicha in the composition of the drink during fermentation and post fermentation, and showed good tolerance to pH. The viability of the Bifid bacterium longum was reduced with the decrease in the pH, but improved in the co-culture with lactobacillus paracasei . The sensory characteristics of the obtained drinks were favorable.
DOI: 10.6084/m9.figshare.9900140
title: Effects of ethanol and ultraviolet-c treatments on inactivation of Rhizopus oryzae spores which cause postharvest rot

description: Abstract Rhizopus oryzae is a filamentous fungi reported as a postharvest pathogen in recent years. Ethanol treatment (0, 10, 20, and 30%) and UVC irradiation (0, 1, 2, 5, 10 minutes) were used both individually and in combination for the inactivation of Rhizopus oryzae spores. Survival ratio of the spores and LD50 values for ethanol and UVC irradiation were determined to quantify the germicidal effect. UVC exposure is found to be significantly more effective than ethanol treatment on the reduction of R. oryzae spore survivability. The combination of UVC exposure and ethanol treatment enhanced the lethality of applying each treatment separately and the enhancement increased as the UVC exposure time and ethanol concentrations increased. The lowest spore survival ratio was 0.015%, obtained after 30% ethanol treatment followed by 10 minute of UVC exposure. These observations suggest that ethanol treatment and UVC exposure can effectively be used as a possible strategy to inactivate R. oryzae spores.
DOI: 10.6084/m9.figshare.9900143.v1
title: Appliance of a high pressure semi-batch reactor: supercritical transesterification of soybean oil using methanol

description: Abstract This work presents the results of a supercritical transesterification process of soybean oil using methanol, performed in a laboratory high pressure semi-batch reactor. A full description of the equipment and a standard operating procedure are also provided. Since fossil fuels are not renewable, biofuels such biodiesel, have gained attention over the past decades. Biodiesel is the result of the transesterification of triacylglycerols in vegetable oils or animal fats and it works as an alternative fuel for compression-ignition engines. Methanol was chosen to perform the reaction, at molar ratios of 1:24 (oil: alcohol) and 0.1 (CO 2:methanol), temperature of 280 °C and pressure of 130 bar. In order to decrease the reaction time, CO2 in the supercritical state was used as cosolvent. The yield of biodiesel produced was equal to 95.19% in only ten minutes of reaction. A high yield of methyl esters (84.41%) was detected by gas chromatography-mass spectrometry. In general, 10 compounds were identified. The component in higher concentration was linoleate, followed by methyl hexadecanoate, oleic acid methyl ester and methyl stearate. The ester conversion rate means that the process with supercritical methanol can be successfully applied to produce biodiesel.
DOI: 10.6084/m9.figshare.9900140.v1
title: Effects of ethanol and ultraviolet-c treatments on inactivation of Rhizopus oryzae spores which cause postharvest rot

description: Abstract Rhizopus oryzae is a filamentous fungi reported as a postharvest pathogen in recent years. Ethanol treatment (0, 10, 20, and 30%) and UVC irradiation (0, 1, 2, 5, 10 minutes) were used both individually and in combination for the inactivation of Rhizopus oryzae spores. Survival ratio of the spores and LD50 values for ethanol and UVC irradiation were determined to quantify the germicidal effect. UVC exposure is found to be significantly more effective than ethanol treatment on the reduction of R. oryzae spore survivability. The combination of UVC exposure and ethanol treatment enhanced the lethality of applying each treatment separately and the enhancement increased as the UVC exposure time and ethanol concentrations increased. The lowest spore survival ratio was 0.015%, obtained after 30% ethanol treatment followed by 10 minute of UVC exposure. These observations suggest that ethanol treatment and UVC exposure can effectively be used as a possible strategy to inactivate R. oryzae spores.
DOI: 10.6084/m9.figshare.9900146.v1
title: Color assessment by different techniques of gilthead seabream (Sparus aurata) during cold storage

description: Abstract Overall objective of the study was assessment for freshness parameters of gilthead seabream (Sparus aurata). The freshness was determined by two conventional method (i.e. Minolta color measurement method) was compared with a novel machine vision technology (i.e image color analysis method). The quality characteristics related to the freshness of the fresh fish are traditionally based on the color measurements of the whole fish by using Minolta color measurement method. This study aimed to compare the use of the image analysis method to see whether the freshness of seafood can be measured more accurately. Our analysis proved more exact and reliable results in the freshness evaluation of the Sparus aurata based on the color changes in the eyes, gill and skin of the fish. This study revealed that image analysis can be successfully used for the assessment of fish freshness by measuring the color parameters of images captured from skin, gill and eye of the fish during cold storage. It is easy and practical to use image color analysis method in the quality control evaluation of fish freshness measurement. This analysis method can be suitable for use in continuous process at the seafood processing factories (e.g. before packaging to sort out fresh vs old fish automatically).
DOI: 10.6084/m9.figshare.9900125
title: Migraine in 746 patients with multiple sclerosis

description: ABSTRACT Migraine adds to the burden of patients suffering from multiple sclerosis (MS). The ID-migraine is a useful tool for screening migraine, and the Migraine Disability Assessment questionnaire can evaluate disease burden. The aim of the present study was to assess the presence and burden of migraine in patients with MS. Methods: Patients diagnosed with MS attending specialized MS units were invited to answer an online survey if they also experienced headache. Results: The study included 746 complete responses from patients with MS and headache. There were 625 women and 121 men, and 69% of all the patients were aged between 20 and 40 years. Migraine was identified in 404 patients (54.1%) and a moderate-to-high burden of disease was observed in 68.3% of the patients. Conclusion: Migraine is a frequent and disabling type of primary headache reported by patients with MS.
DOI: 10.6084/m9.figshare.9900122
title: SPANISH AS A FOREIGN LANGUAGE (E/LE), POÉTIC ACTION AND XENOPHOBIA: A PEDAGOGICAL EXPERIENCE WITH AN OPEN EDUCATIONAL RESOURCE IN THE PERSPECTIVE OF CRITICAL LITERACY

description: ABSTRACT The present study is about the production of Open Educational Resources (OER) in the perspective of Critical Literacy. The overall objective of the study is to investigate to what extent an Open Educational Resource (OER) from the perspective of Critical Literacy can provide (or not) affordances for the production of discursive events sensitive to social problems such as xenophobia. The specific objectives of the research are three, namely: a) Present the developed OER (materials objectives, theoretical and methodological principles that guided its development, materials and tools used during its production, etc.); b) Analyze two samples of the discursive events from this OER, in order to identify indications of Critical Literacy; c) Discuss theoretical and methodological possibilities for the redesign of this material. The study was developed in the course “Textual Production Workshop”, in the online bachelor’s degree in Spanish at the Federal University of Santa Maria, in partnership with the Open University of Brazil (FUSM/OUB). In this sense, it presents characteristics of a qualitative research of a phenomenological nature (BOGDAN and BIKLEN, 1996). The results indicate that OER in the perspective of Critical Literacy can provide affordances for the production of socially sensitive discursive events such as xenophobia, since, despite the small sample analyzed, it was possible to identify traces of Critical Literacy. We hope, in the future, to increase the number of samples, also pointing out cases that had less success, as well as possible motivations for this.
DOI: 10.6084/m9.figshare.9900125.v1
title: Migraine in 746 patients with multiple sclerosis

description: ABSTRACT Migraine adds to the burden of patients suffering from multiple sclerosis (MS). The ID-migraine is a useful tool for screening migraine, and the Migraine Disability Assessment questionnaire can evaluate disease burden. The aim of the present study was to assess the presence and burden of migraine in patients with MS. Methods: Patients diagnosed with MS attending specialized MS units were invited to answer an online survey if they also experienced headache. Results: The study included 746 complete responses from patients with MS and headache. There were 625 women and 121 men, and 69% of all the patients were aged between 20 and 40 years. Migraine was identified in 404 patients (54.1%) and a moderate-to-high burden of disease was observed in 68.3% of the patients. Conclusion: Migraine is a frequent and disabling type of primary headache reported by patients with MS.
DOI: 10.6084/m9.figshare.9900116
title: Global stability of buildings’ structural systems considering beam-wall connections

description: Abstract Several factors influence the stability of concrete structures, such as building height, structural components’ rigidity, bracing system, beam-wall connection rigidity, among others. Global structural stability is evaluated according to NBR 6118/2014 by the α e γz parameters. This article aims to evaluate the global structural stability concrete structures considering the eccentricity of the beam-wall connections. With the aid of software Abaqus© and TQS©, reticulated models were analyzed to evaluate the contribution of the eccentricity of the beam-wall connections on the global stability and the rigidity of the connections. The geometric nonlinear effects were disregarded in these analyses. The stability parameters from NBR6118/2014 were evaluated in the frame models, as well as the flexibilization criteria from the TQS© software, LEPMOL e REDMOL. The results of the displacement analysis show an increase of 26.45%, comparing the centered connection to the more eccentric connection.
DOI: 10.6084/m9.figshare.9900122.v1
title: SPANISH AS A FOREIGN LANGUAGE (E/LE), POÉTIC ACTION AND XENOPHOBIA: A PEDAGOGICAL EXPERIENCE WITH AN OPEN EDUCATIONAL RESOURCE IN THE PERSPECTIVE OF CRITICAL LITERACY

description: ABSTRACT The present study is about the production of Open Educational Resources (OER) in the perspective of Critical Literacy. The overall objective of the study is to investigate to what extent an Open Educational Resource (OER) from the perspective of Critical Literacy can provide (or not) affordances for the production of discursive events sensitive to social problems such as xenophobia. The specific objectives of the research are three, namely: a) Present the developed OER (materials objectives, theoretical and methodological principles that guided its development, materials and tools used during its production, etc.); b) Analyze two samples of the discursive events from this OER, in order to identify indications of Critical Literacy; c) Discuss theoretical and methodological possibilities for the redesign of this material. The study was developed in the course “Textual Production Workshop”, in the online bachelor’s degree in Spanish at the Federal University of Santa Maria, in partnership with the Open University of Brazil (FUSM/OUB). In this sense, it presents characteristics of a qualitative research of a phenomenological nature (BOGDAN and BIKLEN, 1996). The results indicate that OER in the perspective of Critical Literacy can provide affordances for the production of socially sensitive discursive events such as xenophobia, since, despite the small sample analyzed, it was possible to identify traces of Critical Literacy. We hope, in the future, to increase the number of samples, also pointing out cases that had less success, as well as possible motivations for this.
DOI: 10.6084/m9.figshare.9900116.v1
title: Global stability of buildings’ structural systems considering beam-wall connections

description: Abstract Several factors influence the stability of concrete structures, such as building height, structural components’ rigidity, bracing system, beam-wall connection rigidity, among others. Global structural stability is evaluated according to NBR 6118/2014 by the α e γz parameters. This article aims to evaluate the global structural stability concrete structures considering the eccentricity of the beam-wall connections. With the aid of software Abaqus© and TQS©, reticulated models were analyzed to evaluate the contribution of the eccentricity of the beam-wall connections on the global stability and the rigidity of the connections. The geometric nonlinear effects were disregarded in these analyses. The stability parameters from NBR6118/2014 were evaluated in the frame models, as well as the flexibilization criteria from the TQS© software, LEPMOL e REDMOL. The results of the displacement analysis show an increase of 26.45%, comparing the centered connection to the more eccentric connection.
DOI: 10.6084/m9.figshare.9900092
title: Optimization of reinforced concrete beams using Solver tool

description: Abstract Due to the development in structural analysis studies, optimization techniques have become part in the design of reinforced concrete structures. Making it possible to design structures with optimized cross-sections. Thus, the present study aims to implement optimization techniques, using the Solver tool, to design procedure of reinforced concrete beams following the precepts of Brazilian Standard ABNT NBR 6118:2014. Focusing to minimize the cost of reinforced concrete beams, where the design variables are the height and width of the beam cross-section and the constraints are imposed by the relevant technical standards and design variables limitations.