Integrated multi-trophic aquaculture has been considered as an alternative for the sustainable development of mariculture. This study evaluated the use of a multi-trophic system in mariculture in ...order to improve economic viability indices and reduce environmental impacts, leading to a sustainable production. To do so, the economic indicators of two monotrophic crops were considered:
Perna perna
mussels and
Rachycentron canadum
cobias, along with a multi-trophic system involving both species. The indices for the evaluation of profitability were the internal rate of return (IRR), the payback period (PP) and the net present value (NPV). Investment analyses were realized through cash flow and determination of economic viability indicators for a period of 10 years. The systems were evaluated in different scenarios. Each scenario was estimated by means of 20% and 40% variations of the values adopted for the following parameters: unit price of cobia juveniles, average price of the feed, cobia commercial price, mussel commercial price, cobia productivity, and mussel productivity. The multi-trophic system showed greater economic viability in the different scenarios evaluated. This system demonstrated greater resilience, which is more economically attractive to an entrepreneur. Production diversification is an alternative option with a lower associated investment, which can favor economic return and mitigate the risks of small-scale systems dedicated to monocultures.
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EMUNI, FIS, FZAB, GEOZS, GIS, IJS, IMTLJ, KILJ, KISLJ, MFDPS, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, SBMB, SBNM, UKNU, UL, UM, UPUK, VKSCE, ZAGLJ
Euterpe edulis (Arecaceae) Mart has high ecological and economic importance providing food resources for more than 58 species of birds and 20 species of mammals, including humans. E. edulis is the ...second most exploited nontimber product from Brazilian Atlantic Forest. Due to overexploitation and destruction of habitats, E. edulis is threatened by extinction. Euterpe edulis populations have large morphological variations, with individuals having green, red, or yellow leaf sheath. However, no study has related phenotypic distinctions between populations and their levels of genetic structure. Thus, this study aimed to evaluate the diversity and genetic structure of different E. edulis morphotypes. We sampled 250 adult individuals in eight populations with the different morphotypes. Using 14 microsatellite markers, we access genetic diversity through population genetic parameters calculated in the GenAlex program and the diveRsity package in R. We used the Wilcoxon test to verify population bottlenecks and the genetic distance of Nei and Bayesian analysis for genetic clusters. The eight populations showed low allele richness, low observed heterozygosity, and high inbreeding values (f). In addition, six of the eight populations experienced genetic bottlenecks, which would partly explain the low genetic diversity in populations. Cluster analysis identified two clusters (K = 2), with green morphotype genetically distinguishing from yellow and red morphotypes. Thus, we show, for the first time, a strong genetic structure among E. edulis morphotypes even for geographically close populations.
We recorded low genetic variability and genetic bottleneck effect in Euterpe edulis populations, which also have unusual genetic structure for populations of this species. In addition, the evaluated populations formed two genetic clusters, separating typical populations (green morphotype) from populations with yellow or red morphotypes that have restricted occurrence within the Brazilian Atlantic Forest. Thus, we showed, for the first time, that morphologically distinct populations of E. edulis have a strong genetic structure, as a possible response to local environmental factors.
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FZAB, GIS, IJS, KILJ, NLZOH, NUK, OILJ, SAZU, SBCE, SBMB, UL, UM, UPUK
Six previously undescribed tropane alkaloids, designated as erythrobezerrines A-F, were isolated from the EtOH extract from the stem bark of Erythroxylum bezerrae Plowman. Their structures were ...elucidated based on the interpretation of the NMR and MS data and in some instances, confirmed by X-ray diffraction analysis. The cytotoxicity of the isolated compounds was evaluated against the cancer cell lines L929, PC-3, HCT-116, SNB-19 and NCI-H460, but only erythrobezerrine C showed moderate activity with IC50 values of 3.38 and 5.43 μM for HCT-116 and NCI-H460, respectively.
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•Eight tropane alkaloids, six undescribed, were isolated from Erythroxylum bezerrae.•The structures of three alkaloids were established by X-ray diffraction analysis.•One alkaloid was moderately active against HCT-116 and NCI-H460 cancer cell lines.
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GEOZS, IJS, IMTLJ, KILJ, KISLJ, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UILJ, UL, UM, UPUK, ZAGLJ, ZRSKP
Resumo: O objetivo deste trabalho foi estimar as associações entre as variáveis ambientais e a obesidade em população adulta de um município brasileiro de médio porte. Trata-se de estudo transversal ...com dados individuais de estudo de base populacional e dados ambientais obtidos por meio de observação direta, posteriormente georreferenciados com base nos endereços. A amostra incluiu 965 adultos de 20 a 59 anos. Utilizaram-se dados antropométricos, socioeconômicos, demográficos, comportamentais e de percepção de saúde. A variável desfecho foi a obesidade, definida por índice de massa corporal (IMC) ≥ 30kg/m2. Os estabelecimentos de venda de alimentos foram classificados em: supermercados, estabelecimentos com predominância de alimentos saudáveis, não saudáveis e mistos. O ambiente para a prática de atividade física foi categorizado em público e privado. Para a caracterização do ambiente social utilizou-se a renda per capita do setor censitário em terços e taxa de criminalidade. Realizou-se análise de regressão logística binária pelo modelo de equações de estimativa generalizadas. Foi verificada associação inversa entre a densidade dos locais públicos e privados para a prática de atividade física e obesidade (OR = 0,95, IC95%: 0,92-0,99; OR = 0,98, IC95%: 0,97-0,99), em modelos ajustados por variáveis individuais e ambientais. Em todos os modelos o terço de renda per capita mais alto associou-se inversamente à obesidade (p ≤ 0,05). O ambiente alimentar e as taxas de criminalidade não foram independentemente associados à obesidade. Tais achados sugerem que a renda do setor censitário e o ambiente de atividade física podem direcionar políticas públicas para a diminuição da obesidade no município.
Resumen: El objetivo de este estudio fue estimar las asociaciones entre las variables ambientales y la obesidad en una población adulta de un municipio brasileño de tamaño medio. Se trata de un estudio transversal, con datos individuales de un estudio de base poblacional, y datos ambientales obtenidos mediante la observación directa, posteriormente georreferenciados a partir de las direcciones. La muestra incluyó a 965 adultos de 20 a 59 años. Se utilizaron datos antropométricos, socioeconómicos, demográficos, comportamentales y de percepción de salud. La variable desenlace fue la obesidad, definida por índice de masa corporal (IMC) ≥ 30kg/m2. Los establecimientos de venta de alimentos se clasificaron en: supermercados, establecimientos con predominio de alimentos saludables, no saludables y mixtos. El ambiente para la práctica de actividad física se categorizó en público y privado. Para la caracterización del ambiente social se utilizó la renta per capita del censo en terciles y la tasa de criminalidad. Se realizó un análisis de regresión logística binaria por el modelo de ecuaciones de estimación generalizadas. Se verificó la asociación inversa entre la densidad de los lugares públicos y privados para la práctica de actividad física y obesidad (OR = 0,95, IC95%: 0,92-0,99; OR = 0,98, IC95%: 0,97-0,99), en modelos ajustados por variables individuales y ambientales. En todos los modelos el tercio de renta per capita más alto se asoció inversamente a la obesidad (p ≤ 0,05). El ambiente alimentario y las tasas de criminalidad no estuvieron asociados independientemente a la obesidad. Tales resultados sugieren que la renta procedente del censo y el ambiente de actividad física pueden dirigir políticas públicas, con el fin de disminuir la obesidad en el municipio.
Abstract: The aim of this study was to estimate associations between environmental variables and obesity in the adult population in a medium-sized Brazilian city. This was a cross-sectional study with individual data from a population-based study and environmental data obtained by direct observation, later georeferenced by the addresses. The sample included 965 adults 20 to 59 years of age, and the study used anthropometric, socioeconomic, demographic, behavioral, and self-rated health data. The outcome variable was obesity, defined as body mass index (BMI) ≥ 30kg/m2. Retail food outlets were classified as: supermarkets and establishments with a predominance of healthy, unhealthy, and mixed foods. Settings for physical activity were categorized as public and private. Characterization of the social environment used the census tracts’ per capita income in tertiles and the crime rate. Binary logistic regression analysis was performed according to the generalized estimating equations model. An inverse association was found between density of public and private locations for physical activity and obesity (OR = 0.95, 95%CI: 0.92-0.99; OR = 0.98, 95%CI: 0.97-0.99) in models adjusted by individual and environmental variables. In all the models, the highest per capita income tertile was inversely associated with obesity (p ≤ 0.05). The food environment and crime rates were not independently associated with obesity. These findings suggest that the census tract’s income and its environment for physical activity can orient public policies to decrease obesity in this city.
Tithonia diversifolia is a perennial bushy plant found in South America with significant ethnopharmacological importance as an antimalarial, antidiabetic, antibacterial, and anticancer agent. The aim ...of the present study was to determine the cytotoxicity of the ethanolic extract from leaves of T. diversifolia (TdE) on human cancer cell lines (HCT-116, SNB-19, NCIH-460 and MCF-7), as well as the mechanism of action involved in cell death and cellular modulation of oxidative stress. The TdE exhibited significant activity with IC
50
values ranging from 7.12 to 38.41 μg/ml, with HCT-116 being the most sensitive cell line. Subsequent experiments were conducted with HCT-116 cell line. TdE decreased the number of viable cells, followed by induction of apoptotic events, increase in mitochondrial membrane permeabilization, and enhanced G
2
/M phase of the cell cycle. Pro-oxidative effects including elevated acidic vesicular organelle formation, lipid peroxidation, and nitric oxide by-products, as well as reduced levels of intracellular glutathione and reactive oxygen species production were also observed following incubation with TdE, which may lead to DNA damage followed by apoptotic cell death. These results demonstrate the potential of TdE ethanolic leaf extraction for biological activity and enhance the importance of continuing to study natural sources of plants for the development of anticancer agents.
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BFBNIB, GIS, IJS, KISLJ, NUK, PNG, UL, UM, UPUK
This study aimed to assess the implications of Zn enrichment in wheat grains as a function of contrasting genotypes, edaphic conditions and foliar fertilizers.
L. varieties Roxo and Paiva were grown ...in four production fields, and sprayed with ZnSO
(0, 16.20 and 36.40 kg/ha) Zn-EDTA (0, 6.30 and 12.60 kg/ha) and Tecnifol Zinc (0, 3.90 and 7.80 kg/ha). The heterogeneous edaphic conditions of the wheat fields were chemically characterized, it being found that soil properties determine different Zn accumulation in the grains of both genotypes. Foliar spraying enhanced to different extents Zn content in the grains of both genotypes, but the average of enrichment indexes varied among the wheat fields. Zinc mostly accumulated in the embryo and vascular bundle and to a lesser extent in the endosperm. Grain yield and test weight sprayed by ZnSO
gave the highest values in both genotypes, but the opposite was found for Zn-EDTA. Considering the color parameters, lightness and red-green transitions were found to be a conjunction of genotype characteristics, fertilization types and edaphic conditions prevailing in each field. It is concluded that the index of Zn enrichment in wheat grains is a docket of edaphic conditions, genotype and type of fertilization.
The aim of this study was to estimate associations between environmental variables and obesity in the adult population in a medium-sized Brazilian city. This was a cross-sectional study with ...individual data from a population-based study and environmental data obtained by direct observation, later georeferenced by the addresses. The sample included 965 adults 20 to 59 years of age, and the study used anthropometric, socioeconomic, demographic, behavioral, and self-rated health data. The outcome variable was obesity, defined as body mass index (BMI) ≥ 30kg/m2. Retail food outlets were classified as: supermarkets and establishments with a predominance of healthy, unhealthy, and mixed foods. Settings for physical activity were categorized as public and private. Characterization of the social environment used the census tracts' per capita income in tertiles and the crime rate. Binary logistic regression analysis was performed according to the generalized estimating equations model. An inverse association was found between density of public and private locations for physical activity and obesity (OR = 0.95, 95%CI: 0.92-0.99; OR = 0.98, 95%CI: 0.97-0.99) in models adjusted by individual and environmental variables. In all the models, the highest per capita income tertile was inversely associated with obesity (p ≤ 0.05). The food environment and crime rates were not independently associated with obesity. These findings suggest that the census tract's income and its environment for physical activity can orient public policies to decrease obesity in this city.
Nowadays, there is a growing concern about micronutrient deficits in food products, with agronomic biofortification being considered a mitigation strategy. In this context, as Zn is essential for ...growth and maintenance of human health, a workflow for the biofortification of grapes from the Vitis vinifera variety Fernão Pires, which contains this nutrient, was carried out considering the soil properties of the vineyard. Additionally, Zn accumulation in the tissues of the grapes and the implications for some quality parameters and on winemaking were assessed. Vines were sprayed three times with ZnO and ZnSO4 at concentrations of 150, 450, and 900 g ha−1 during the production cycle. Physiological data were obtained through chlorophyll a fluorescence data, to access the potential symptoms of toxicity. At harvest, treated grapes revealed significant increases of Zn concentration relative to the control, being more pronounced for ZnO and ZnSO4 in the skin and seeds, respectively. After winemaking, an increase was also found regarding the control (i.e., 1.59-fold with ZnSO4-450 g ha−1). The contents of the sugars and fatty acids, as well as the colorimetric analyses, were also assessed, but significant variations were not found among treatments. In general, Zn biofortification increased with ZnO and ZnSO4, without significantly affecting the physicochemical characteristics of grapes.
Calcium is essential for plants, yet as its mobility is limited, the understanding of the rate of Ca2+ accumulation and deposition in tissues of tubers, as well as the interactions with other ...critical nutrients prompted this study. To assess the interactions and differential accumulation of micro and macronutrients in the tissues of tubers, Solanum tuberosum L. varieties Agria and Rossi were cultivated and, after the beginning of tuberization, four foliar sprayings (at 8–10 day intervals) with CaCl2 (3 and 6 kg ha−1) or Ca(NO3)2 (2 and 4 kg ha−1) solutions were performed. It was found that both fertilizers increased Ca accumulation in tubers (mostly in the parenchyma tissues located in the center of the equatorial region). The functioning of the photosynthetic apparatus was not affected until the 3rd application but was somewhat affected when approaching the end of the crop cycle (after the 4th application), although the lower dose of CaCl2 seemed to improve the photochemical use of energy, particularly when compared with the greater dose of Ca(NO3)2. Still, none of these impacts modified tuber height and diameter. Following the increased accumulation of Ca, in the tubers of both varieties, the mean contents of P, K, Na, Fe, and Zn revealed different accumulation patterns. Moreover, accumulation of K, Fe, Mn, and Zn prevailed in the epidermis, displaying a contrasting pattern relative to Ca. Therefore, Ca accumulation revealed a heterogeneous trend in the different regions analyzed, and Ca enrichment of tubers altered the accumulation of other nutrients.
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