cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.11930298
title: Preharvest nitrogen application affects quality and antioxidant status of two tomato cultivars

description: ABSTRACT Intensive horticultural crop production usually involves challenges from excessive application of fertilizer, mainly nitrogen (N). The effect of N fertilizer on the fruit quality and antioxidant status of two cherry tomato cultivars (Caballero and Victoria) under greenhouse conditions was performed. Nitrogen treatments were applied ranging from conditions comprising deficiency to toxicity (0, 15, 30, 45 and 60 mmol∙L-1). Yield, weight, diameter, fruit quality, phenols, flavonoids, lycopene, ascorbic acid and antioxidant capacity were measured at physiological maturity of the fresh tomato fruits. N treatment with 30 mmol∙L-1 produced the highest yield, fruit weight, firmness and diameter in both cultivars. However, increasing N from 30 to 60 mmol∙L-1 increased the concentration of phenolics, flavonoids, and antioxidant capacity by 50, 125 and 33% in ‘Caballero’ tomatoes and by 60, 95 and 24% in ‘Victoria’ tomatoes, respectively. Lycopene content increased with increasing N doses (45 and 60 mmol∙L-1) for ‘Caballero’ tomatoes, while vitamin C decreased as N concentration increased, suggesting that ascorbic acid acts by protecting against oxidative stress in tomato. The present work shows how N fertilization considerably influences yield and quality of tomatoes, as well as nutritional and healthy values.
DOI: 10.6084/m9.figshare.11930301.v1
title: The APOB rs693 polymorphism impacts the lipid profile of Brazilian older adults

description: The apolipoprotein B (APOB) gene contains several polymorphic sites described as risk modifiers for cardiovascular events. The objective of this study was to verify the association of the classic APOB Xba I polymorphism (rs693) with atherosclerotic risk factors in a segment of the Brazilian elderly population considering their usual dietary intake. Clinical and biochemical characteristics as well as total caloric and fat intake data were determined from 644 elderly individuals. Polymorphism analysis was performed by conventional polymerase chain reaction followed by enzyme restriction. Statistical analyses compared measures and proportions according to different APOB genotypic combinations. Statistically significant association was found between Xba I polymorphism and serum LDL, total cholesterol, and total lipid levels, with important elevations among T homozygotes compared to the other genotypes. There was homogeneity in all other parameters analyzed (including intake pattern), with a tendency for reduced levels of circulating apolipoprotein B among TT individuals. Our results pointed out that genetic variation in APOB affected the lipemic profile of elderly individuals in a context not biased by diet, generating a pattern suggestive of secretory disorder of lipoprotein particles, with possible implication in atherosclerotic risk.
DOI: 10.6084/m9.figshare.11930292
title: Development of a beverage based on citric juice with the addition of whey

description: Abstract Faced with new trends in healthy eating, there is a need to expand this market. The Argentine Society of Nutrition, based on local and international studies, has suggested that an adequate intake of dairy products not only provides calcium but also provides compounds associated with a decrease in the risk of chronic inflammatory diseases. The objectives of this work were to formulate and develop beverages based on orange juice with the addition of liquid and powdered whey, sweetened naturally, and study the physicochemical, nutritional and sensory characteristics. The samples were homogenized and pasteurized at 85 °C for 30 minutes and the pH value, acidity, solids content and colour were analyzed. A just-about-right (JAR) scale was used to evaluate the intensities of the acid taste, bitter taste and flavour, and also the colour attributes, and a 5-point hedonic scale was used to evaluate the global acceptability of the samples. The intensity analyses showed that the taste and colour were “ideal”. With respect to global acceptability, the pleasant categories scored more than 60% and only 10% considered it unpleasant. The beverage presented a pH value, colour and solids content similar to those of other citrus beverages, and was rated as pleasant by the consumers.
DOI: 10.6084/m9.figshare.11930295
title: Effect of Temperature Treatment on Electrical Property, Crystal Structures and Lattice Strains of Precipitated CaCO3 Nanoparticles

description: In this study, the effect of temperature treatment during the preparation process of calcium carbonate (CaCO3) nanoparticles was systematically examined for a drug delivery carrier. The CaCO3 powder was prepared by the precipitation method at different annealing temperatures. The morphologies, elemental compositions and crystal structures of the synthesized CaCO3 powder were analyzed by Scanning Electron Microscope/Energy-Dispersive Spectroscopy and X-ray Diffractometry (XRD), respectively. The result shows that the particle size increased with an increase in annealing temperature. Based on the crystal structure analyzed from XRD, the sample was perfectly matched with the calcite/vaterite polymorphs phases. The crystallite size and lattice strains of the CaCO3 powder were calculated from the full width at half maximum parameter. The results show that the increase in annealing temperature leads to an increase in crystallite size and a decrease in lattice strain. The CaCO3 powder has a dielectric constant of 6.0-6.8 that reduced with the increase in applied frequency. The crystal structure, crystallite size, lattice strain, and dielectric properties of CaCO3 powder are dependent of the annealing temperature. Such properties confirm that CaCO3 powder is suitable for drug delivery carrier application.
DOI: 10.6084/m9.figshare.11930295.v1
title: Effect of Temperature Treatment on Electrical Property, Crystal Structures and Lattice Strains of Precipitated CaCO3 Nanoparticles

description: In this study, the effect of temperature treatment during the preparation process of calcium carbonate (CaCO3) nanoparticles was systematically examined for a drug delivery carrier. The CaCO3 powder was prepared by the precipitation method at different annealing temperatures. The morphologies, elemental compositions and crystal structures of the synthesized CaCO3 powder were analyzed by Scanning Electron Microscope/Energy-Dispersive Spectroscopy and X-ray Diffractometry (XRD), respectively. The result shows that the particle size increased with an increase in annealing temperature. Based on the crystal structure analyzed from XRD, the sample was perfectly matched with the calcite/vaterite polymorphs phases. The crystallite size and lattice strains of the CaCO3 powder were calculated from the full width at half maximum parameter. The results show that the increase in annealing temperature leads to an increase in crystallite size and a decrease in lattice strain. The CaCO3 powder has a dielectric constant of 6.0-6.8 that reduced with the increase in applied frequency. The crystal structure, crystallite size, lattice strain, and dielectric properties of CaCO3 powder are dependent of the annealing temperature. Such properties confirm that CaCO3 powder is suitable for drug delivery carrier application.
DOI: 10.6084/m9.figshare.11930298.v1
title: Preharvest nitrogen application affects quality and antioxidant status of two tomato cultivars

description: ABSTRACT Intensive horticultural crop production usually involves challenges from excessive application of fertilizer, mainly nitrogen (N). The effect of N fertilizer on the fruit quality and antioxidant status of two cherry tomato cultivars (Caballero and Victoria) under greenhouse conditions was performed. Nitrogen treatments were applied ranging from conditions comprising deficiency to toxicity (0, 15, 30, 45 and 60 mmol∙L-1). Yield, weight, diameter, fruit quality, phenols, flavonoids, lycopene, ascorbic acid and antioxidant capacity were measured at physiological maturity of the fresh tomato fruits. N treatment with 30 mmol∙L-1 produced the highest yield, fruit weight, firmness and diameter in both cultivars. However, increasing N from 30 to 60 mmol∙L-1 increased the concentration of phenolics, flavonoids, and antioxidant capacity by 50, 125 and 33% in ‘Caballero’ tomatoes and by 60, 95 and 24% in ‘Victoria’ tomatoes, respectively. Lycopene content increased with increasing N doses (45 and 60 mmol∙L-1) for ‘Caballero’ tomatoes, while vitamin C decreased as N concentration increased, suggesting that ascorbic acid acts by protecting against oxidative stress in tomato. The present work shows how N fertilization considerably influences yield and quality of tomatoes, as well as nutritional and healthy values.
DOI: 10.6084/m9.figshare.11930286
title: Photo-selective nets and potassium concentrations on Costus lasius crop

description: ABSTRACT The practice of using different photo-selective nets, associated with the technique of fertigation, represents a new agrotechnological concept that aims to promote specific physiological responses for growth and production, which are regulated by light. The aims of the study were to evaluate the effect of photo-selective nets and potassium concentrations in the fertigation solution on the horticultural performance of Costus lasius. The study was conducted at the Universidade de São Paulo, ESALQ, Piracicaba, SP, Brazil. Three experiments were carried out separately to evaluate five potassium concentrations in the fertigation solution (40, 80, 120, 160 and 200 mg L-1) under three colours of photo-selective nets (red, blue and black) in a randomized block design, with five repetitions. The variables plant height and numbers of leaves, stems and flower buds were evaluated. The data were submitted to the joint analysis of experiments. The association between the K+ concentration of 200 mg L-1 and the black photo-selective net results in higher stem and inflorescence production.
DOI: 10.6084/m9.figshare.11930289
title: Profit distribution and regulation: the impact of mandatory dividend in corporate internal funding

description: ABSTRACT The purpose of our research is to verify the impact of mandatory dividends on Brazilian publicly traded companies, focusing on both the value of cash holdings and the impact on corporate investment. Our work aims to reach the research objective making significant improvements over the previous works on the subject. First, we separate firms according to their dividend status. Second, in addition to investment regressions, we use the value of cash approach to test the impact of mandatory dividend on corporate financial decisions. Finally, our manual data collection makes it possible to allocate the dividend distributed to its reference period. Considering our context, where sources of financing are expensive and scarce, evidences obtained by the present research has great relevance. The law aims to protect the minority investor against the expropriation of resources. However, in dealing with all cases equally, legislation ends up harming companies that rely on these resources for their financing, thereby damaging their shareholders. This article brings new evidences, from an innovative approach, on factors affecting the availability of resources and its impact on the value of cash and on corporate investment in Brazil. We analyzed a sample of 1,654 dividend distributions from 2008 to 2015, using investment and firm value regressions. Our results indicate that companies paying just the minimum dividend have higher value attached to an extra unit of cash, corroborating our view that those companies will likely use these resources to fund future profitable investments. We also find that mandatory dividend has a negative impact on investment, but only for companies paying dividends above the minimum, contrary to our expectations. We argue that the marginal value of cash approach is a more effective way to test the impact of regulation on corporate financial decisions and this last evidence may be the result of endogeneity problems in investment regressions.
DOI: 10.6084/m9.figshare.11930286.v1
title: Photo-selective nets and potassium concentrations on Costus lasius crop

description: ABSTRACT The practice of using different photo-selective nets, associated with the technique of fertigation, represents a new agrotechnological concept that aims to promote specific physiological responses for growth and production, which are regulated by light. The aims of the study were to evaluate the effect of photo-selective nets and potassium concentrations in the fertigation solution on the horticultural performance of Costus lasius. The study was conducted at the Universidade de São Paulo, ESALQ, Piracicaba, SP, Brazil. Three experiments were carried out separately to evaluate five potassium concentrations in the fertigation solution (40, 80, 120, 160 and 200 mg L-1) under three colours of photo-selective nets (red, blue and black) in a randomized block design, with five repetitions. The variables plant height and numbers of leaves, stems and flower buds were evaluated. The data were submitted to the joint analysis of experiments. The association between the K+ concentration of 200 mg L-1 and the black photo-selective net results in higher stem and inflorescence production.
DOI: 10.6084/m9.figshare.11930289.v1
title: Profit distribution and regulation: the impact of mandatory dividend in corporate internal funding

description: ABSTRACT The purpose of our research is to verify the impact of mandatory dividends on Brazilian publicly traded companies, focusing on both the value of cash holdings and the impact on corporate investment. Our work aims to reach the research objective making significant improvements over the previous works on the subject. First, we separate firms according to their dividend status. Second, in addition to investment regressions, we use the value of cash approach to test the impact of mandatory dividend on corporate financial decisions. Finally, our manual data collection makes it possible to allocate the dividend distributed to its reference period. Considering our context, where sources of financing are expensive and scarce, evidences obtained by the present research has great relevance. The law aims to protect the minority investor against the expropriation of resources. However, in dealing with all cases equally, legislation ends up harming companies that rely on these resources for their financing, thereby damaging their shareholders. This article brings new evidences, from an innovative approach, on factors affecting the availability of resources and its impact on the value of cash and on corporate investment in Brazil. We analyzed a sample of 1,654 dividend distributions from 2008 to 2015, using investment and firm value regressions. Our results indicate that companies paying just the minimum dividend have higher value attached to an extra unit of cash, corroborating our view that those companies will likely use these resources to fund future profitable investments. We also find that mandatory dividend has a negative impact on investment, but only for companies paying dividends above the minimum, contrary to our expectations. We argue that the marginal value of cash approach is a more effective way to test the impact of regulation on corporate financial decisions and this last evidence may be the result of endogeneity problems in investment regressions.
DOI: 10.6084/m9.figshare.11930292.v1
title: Development of a beverage based on citric juice with the addition of whey

description: Abstract Faced with new trends in healthy eating, there is a need to expand this market. The Argentine Society of Nutrition, based on local and international studies, has suggested that an adequate intake of dairy products not only provides calcium but also provides compounds associated with a decrease in the risk of chronic inflammatory diseases. The objectives of this work were to formulate and develop beverages based on orange juice with the addition of liquid and powdered whey, sweetened naturally, and study the physicochemical, nutritional and sensory characteristics. The samples were homogenized and pasteurized at 85 °C for 30 minutes and the pH value, acidity, solids content and colour were analyzed. A just-about-right (JAR) scale was used to evaluate the intensities of the acid taste, bitter taste and flavour, and also the colour attributes, and a 5-point hedonic scale was used to evaluate the global acceptability of the samples. The intensity analyses showed that the taste and colour were “ideal”. With respect to global acceptability, the pleasant categories scored more than 60% and only 10% considered it unpleasant. The beverage presented a pH value, colour and solids content similar to those of other citrus beverages, and was rated as pleasant by the consumers.
DOI: 10.6084/m9.figshare.11930280
title: Development and characterization of corn starch bioplastics containing dry sprout by-product flour

description: Abstract This study aimed to develop and characterize cornstarch bioplastics containing sprouts by-product flour. Thus, we performed the technological characterization of the sprouts by-product flour of different types of sprouts (beans, alfalfa, amaranth, broccoli, radish and, predominantly, clover). Firstly, we produced sprout by-products flour with forced air circulation at 50 °C. The physicochemical analyses showed that the elaborated flour had high water retention capacity, low water solubility, and high lipid content. After that, we elaborated film-forming solutions with cornstarch (4%), glycerol (30% on corn starch content) and distilled water (sufficient quantity to 100%). The dry sprout by-product flour was added at proportions of 0 (control); 2.5%; 5%; 7.5% and 10% on corn starch base. The results of the films analyzes showed that adding flour of sprouts by-product resulted in changes of the color parameters, water solubility index and melting temperature when comparing the control film to the films with different proportions of the sprouts by-product flour. The acid and oil solubility did not show differences between the analyzed formulations. Our results show that the sprouts by-product proved to be a possible ingredient for improvement of bioplastics, aiming at the improvement of technological properties and the reuse of agroindustrial residues.
DOI: 10.6084/m9.figshare.11930280.v1
title: Development and characterization of corn starch bioplastics containing dry sprout by-product flour

description: Abstract This study aimed to develop and characterize cornstarch bioplastics containing sprouts by-product flour. Thus, we performed the technological characterization of the sprouts by-product flour of different types of sprouts (beans, alfalfa, amaranth, broccoli, radish and, predominantly, clover). Firstly, we produced sprout by-products flour with forced air circulation at 50 °C. The physicochemical analyses showed that the elaborated flour had high water retention capacity, low water solubility, and high lipid content. After that, we elaborated film-forming solutions with cornstarch (4%), glycerol (30% on corn starch content) and distilled water (sufficient quantity to 100%). The dry sprout by-product flour was added at proportions of 0 (control); 2.5%; 5%; 7.5% and 10% on corn starch base. The results of the films analyzes showed that adding flour of sprouts by-product resulted in changes of the color parameters, water solubility index and melting temperature when comparing the control film to the films with different proportions of the sprouts by-product flour. The acid and oil solubility did not show differences between the analyzed formulations. Our results show that the sprouts by-product proved to be a possible ingredient for improvement of bioplastics, aiming at the improvement of technological properties and the reuse of agroindustrial residues.
DOI: 10.6084/m9.figshare.11930283
title: Evaluation of phenolic and antioxidant properties of strawberry as a function of extraction conditions

description: Abstract We studied the extraction of antioxidant phenolic compounds, anthocyanins and the evaluation of antioxidant activity of strawberries in different extraction conditions, varying the type of solvent (ethanol:water (50%) and acetone:water (60%), the extraction time (15 and 60 min) and the solvent volume to sample mass ratio (5 mL/g and 20 mL/g). In addition, we performed principal component analysis and cluster analysis. The results showed that, although the two solvents tested had similar influence on total phenolic compounds extraction and antioxidant activity, the 60 minutes of extraction and the use of the solvent volume/sample mass ratio of 20 mL/g were the best extraction conditions, both for the 1st and 2nd recovered extracts. However, the solvent had a marked effect on anthocyanins’ extraction, so that acetone/water extracted almost the double as compared to ethanol/water, for the same extraction conditions. Finally, factor analysis allowed identifying a grouping structure of two components, which was confirmed by the dendogram obtained from cluster analysis.
DOI: 10.6084/m9.figshare.11930283.v1
title: Evaluation of phenolic and antioxidant properties of strawberry as a function of extraction conditions

description: Abstract We studied the extraction of antioxidant phenolic compounds, anthocyanins and the evaluation of antioxidant activity of strawberries in different extraction conditions, varying the type of solvent (ethanol:water (50%) and acetone:water (60%), the extraction time (15 and 60 min) and the solvent volume to sample mass ratio (5 mL/g and 20 mL/g). In addition, we performed principal component analysis and cluster analysis. The results showed that, although the two solvents tested had similar influence on total phenolic compounds extraction and antioxidant activity, the 60 minutes of extraction and the use of the solvent volume/sample mass ratio of 20 mL/g were the best extraction conditions, both for the 1st and 2nd recovered extracts. However, the solvent had a marked effect on anthocyanins’ extraction, so that acetone/water extracted almost the double as compared to ethanol/water, for the same extraction conditions. Finally, factor analysis allowed identifying a grouping structure of two components, which was confirmed by the dendogram obtained from cluster analysis.
DOI: 10.6084/m9.figshare.11930268
title: Synthesis of New Phenolic-Schiff Base and Its Application as Antioxidant in Soybean Biodiesel and Corrosion Inhibitor in AISI 1020 Carbon Steel

description: New Schiff base compound N, N’-bis-(4-hexadecanate)-salicylethylenediamine (named IM) was synthesized, and characterized via infrared and nuclear magnetic ressonance spectroscopies. IM was tested as corrosion inhibitor and antioxidant in soybean biodiesel. Corrosion studies were developed with AISI 1020 carbon steel in a three-step accelerated corrosion assay and IM inhibitory activity was evaluated using microscopic techiniques: optical microscopy (OM), scanning electron microscopy (SEM) and atomic force microscopy (AFM). In 750 ppm concentration, IM showed better inhibitory activity compared to commercial compounds tert-butylhydroquinone and pyrogallol, reducing root-mean-square roughness (Rq) from 37.8 to 11.7 nm and peak-peak height (PP) from 454.1 to 120.2 nm after 8 days of immersion. Antioxidant studies were conducted using the PetroOXY equipment. In 250 ppm concentration, IM showed better antioxidant activity as metal chelator, reducing biodiesel oxidation induced by copper on biodiesel. In this concentration, IM increased the induction period from 3.0 to 5.8 h. Furthermore, the new Schiff base acts as an oxygen scavanger. This is a great property because it reduces oxygen concentration in biodiesel, reducing metal corrosion reactions.