Acta Brasiliensis

Journal Information
ISSN / EISSN : 2526-432X / 2526-4338
Published by: Acta Brasiliensis (10.22571)
Total articles ≅ 103
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José Lucas Dos Santos Oliveira, Joel Silva Santos
Published: 30 September 2021
Acta Brasiliensis, Volume 5, pp 116-122; https://doi.org/10.22571/2526-4338549

Abstract:
O objetivo deste artigo foi realizar um resgate histórico do surgimento, definições, e abordagens da Ecologia Urbana. Para a realização da pesquisa, utilizou-se principalmente artigos publicados em periódicos acadêmicos nacionais e internacionais. A Ecologia Urbana foi criada em 1920 pela Escola de Chicago, emergindo da necessidade de se compreender as dinâmicas de funcionamento das cidades, abordando alterações antrópicas em áreas urbanas e sua interação com os ecossistemas naturais e o ambiente construído. As pesquisas em Ecologia Urbana podem ser estritamente biológicas (Ecologia na Cidade), ou possuir enfoque interdisciplinar com a interação das ciências naturais e sociais (Ecologia da Cidade). A abordagem interdisciplinar da Ecologia Urbana é imprescindível para a promoção da sustentabilidade ecológica e socioeconômica em áreas urbanas, servindo de base para o estabelecimento de estratégias e Políticas Públicas de planejamento e gestão sustentável das cidades.
Thiago Augusto Araujo Correia Lima (In Memorian), Leonardo Pinto Cunha, José Eduardo Lahoz Da Silva Ribeiro, , Maria Da Paz Lima
Published: 30 September 2021
Acta Brasiliensis, Volume 5, pp 88-91; https://doi.org/10.22571/2526-4338559

Abstract:
Protium aracouchini (Aubl.) Marchand [sin Icica aracouchini Aubl.], which occurs in the Adolpho Ducke Forest Reserve, in the Brazilian Amazon, was evaluated for the presence of galls, for resin exudation and the composition of the essential oils from the aerial parts and the resin. The experiment to stimulate the exudation of resin from the trunk was conducted using a 2-chloroethylphosphonic acid solution. The resin produced after 40 days and the aerial parts had their essential oils extracted in a Clevenger apparatus and the volatile chemical constituents were analyzed using GC/MS. The non-oxygenated sesquiterpenes α-copaene (21.15%) and α-gurjunene (13.69%), in addition to the oxygenated sesquiterpene spathulenol (10.32%), were detected as the majority constituents of the essential oil of the leaves, and a concentration similar to that of α-gurjunene was found in the branches (13.28%). The resin essential oil showed a high concentration of hydrocarbon monoterpenes (76.49%) with a predominance of α-pinene (17.57%) and limonene (46.11%). Four gall morphotypes were found associated with this species. The present study reports for the first time information on the volatile constituents and the resinous potential of P. aracouchini, and registers the morphotypes of the galls that help in the taxonomy of the species.
, , Francisco Carlos Pinheiro Costa
Published: 30 September 2021
Acta Brasiliensis, Volume 5, pp 112-115; https://doi.org/10.22571/2526-4338541

Abstract:
This study report the first record of Allamanda blanchetii Kunth in the Atlantic Forest, Brazil. This species was collected from an upland forest in Semi-deciduous Seasonal Forest. This occurrence adds new information about the distribution of this species and expands its range to Brazil, which is important for its conservation. We provide taxonomic information, distribution maps, conservation status assessment, photograps, and an identification key for the Allamanda L. species in the Atlantic Forest.
Antonia Alikaene De Sa, Antonio Reis De Sousa, ,
Published: 30 September 2021
Acta Brasiliensis, Volume 5, pp 108-111; https://doi.org/10.22571/2526-4338548

Abstract:
Corchorus hirtus L. belongs to the Malvaceae family, it is commonly found in humid and ruderal environments. The occurrence of this species is recorded in all states of Northeast Brazil, except Piauí. Therefore, the aim of this work is to record the occurrence of the species in an area of Piauí, collected in the county of Oeiras, Riacho Mocha, a region of ​​ecological tension. To portray the geographic distribution of the plant, there were made a morphological characterization with pictures of relevant aspects of the plant's morphology.
Glaucia Batista Maciel dos Santos,
Published: 30 September 2021
Acta Brasiliensis, Volume 5, pp 103-107; https://doi.org/10.22571/2526-4338536

Abstract:
Os micronutrientes, micro ou oligoelementos, incluem vitaminas e alguns metais, sendo que uma parcela significativa da população mundial apresenta deficiência nutricional desses elementos. Este estudo avaliou os teores de micronutrientes metálicos em Crassostrea rhizophorae (ostra) e Mytella guyanensis (sururu) coletados no sul da Bahia, Brasil, num trecho de 280 km de extensão. Os teores dos metais (Cu, Fe, Mn e Zn) da parte edível das espécies foram avaliados em espectrometria de emissão óptica de plasma indutivamente acoplado (ICP OES). As concentrações médias encontradas para C. rhizophorae e M. guyanensis, respectivamente, foram: Cu (2,09 ± 0,90 e 2,31 ± 0,63); Fe (32,03 ± 4,18 e 213,36 ± 51,67); Mn (1,75 ± 0,44 e 13,61 ± 2,83) e Zn (129,54 ± 25,88 e 12,13 ± 1,13), em mg kg-1. Ambos os bivalves foram relevantes na concentração dos micronutrientes investigados, com destaque para os valores elevados de Zn em C. rhizophorae e de Fe em M. guyanensis. Palavras-chave: Cobre, elementos essenciais, ferro, manganês, zinco.
Erika Oliveira Da Silva, Paula Figliuolo da Cruz Borges, Rafaela Benício Santana, Heriederson Sávio Dias Moura, José Fernando Marques Barcellos, Bruno Bezerra Jensen, Francimeire Gomes Pinheiro, Maricleide Farias Naiff, ,
Published: 30 September 2021
Acta Brasiliensis, Volume 5, pp 97-102; https://doi.org/10.22571/2526-4338560

Abstract:
American integumentary leishmaniasis (ATL) is a neglected disease that mostly affects vulnerable populations. Its broad spectrum of clinical manifestations is related to the type of immune response produced by the host and the species of Leishmania involved. In recent years, the use of medicinal plants has become a therapeutic alternative in the treatment of infectious parasitic diseases. This research aimed to evaluate the lymphoproliferative responses of peripheral blood mononuclear cells (PBMCs) of patients with cutaneous leishmaniasis (CL) before and after treatment, and healthy individuals. The lymphoproliferative response was evaluated in cell culture using stimuli of the dichloromethane fraction (DCM) obtained from Libidibia ferrea, Glucantime® and phytohemagglutinin - PHA using a BrdU Cell Proliferation after 72 h of incubation. In cultures treated with the DCM fraction, intense induction of lymphoproliferation was observed (p<0.0001), as was also observed in response to the PHA mitogen, and there was a significant difference when compared with the conventional treatment (p<0.0135). In the post-treatment and healthy groups, although the compound induced lymphoproliferation, there was no statistical difference. These results suggest that the organic compound played an important inducing role in lymphoproliferation, which highlights the importance of continuity involving new studies in order to evaluate its immunomodulatory activity.
Published: 30 September 2021
Acta Brasiliensis, Volume 5, pp 92-96; https://doi.org/10.22571/2526-4338528

Abstract:
Fungi are one of the main food spoilage agents. Numerous species when subjected to stress conditions produce secondary metabolites known as mycotoxins, which are mutagenic and carcinogenic substances. The fungus Aspergillus flavus is one of the main contaminants of grains and is known to produce Aflatoxin. Pesticides are used in agriculture to contain fungi and other pests, but they harm other species, the environment and the human health, in addition to the development of resistance to these substances in pest species. Natural alternatives have been sought to control these organisms. In this context, essential oils are a viable option against A. flavus. The aim of this study was to identify the main components and evaluate the effectiveness of lemongrass essential oil (Cymbopogon flexuosus) for controlling the fungus Aspergillus flavus. Initially, the effect of essential oil on mycelial growth of the fungus was assessed by in vitro tests at the doses: 0.05; 0.1; 0.2; 0.4; 0.6; 0.8; 1.6; 3.2; 6.4; and 12.8 μL mL-1. The minimum inhibitory concentration (MIC) was 0.8 μL mL-1. The in vivo test was performed at the following concentrations: 0.6; 0.8; and 1.6 μL mL-1. The results showed that the essential oil has fungicidal potential against A. flavus. The main component of the essential oil was citral.
Andressa Alves Pinheiro,
Published: 27 May 2021
Acta Brasiliensis, Volume 5, pp 51-56; https://doi.org/10.22571/2526-4338518

Abstract:
The predominance of mono and polyunsaturated fatty acid of Glycine max L. (soybean) and Helianthus annus L. (sunflower) oils make them more unstable under high temperatures and susceptible to oxidation. On the other hand, the composition of the Cocos nucifera L. (coconut) oil is predominantly saturated and has high oxidative stability. The formulation of oil blends allows some improvements in their nutritional and physicochemical characteristics. Thus, the aim of this work is to evaluate the G. max oil (SB), H. annus oil (SF), C. nucifera oil (C) and the blends G. max:C. nucifera (SB:C, 75:25 v/v) and H. annus:C. nucifera (SF:C, 75:25 v/v) as to their physicochemical properties when under thermoxidation (180 °C/15 h). Before the thermoxidation, the C presented less degradation in relation to the others, while the SF:C was the most efficient in inhibiting oxidation due to the presence of low levels of peroxide values, however, it presented less degradation to ρ-anisidine and conjugated dieneic acids. The SF:C presented higher oxidative stability and less degradation in relation to SB:C. Consequently, the application of these oil blends is recommendable in processes that involve high temperatures, such as frying.
Anny Bianca Santos Cruz, , Juliano Ricardo Fabricante
Published: 27 May 2021
Acta Brasiliensis, Volume 5, pp 83-87; https://doi.org/10.22571/2526-4338485

Abstract:
As briófitas podem ser utilizadas como bioindicadoras, no entanto, uma das limitações desse uso são as lacunas no conhecimento sobre a ocorrência das espécies. Assim, o presente estudo teve como objetivo realizar a modelagem de nicho ecológico para Helicodontium capillare (Hedw.) A.Jaeger e Thuidium tomentosum Schimp., duas espécies de musgos bioindicadores. Os dados de ocorrência das espécies foram obtidos na plataforma Global Biodiversity Information Facility (GBIF) e SpeciesLink. As variáveis bioclimáticas foram coletadas do WorldClim 2.0. Para selecionar as menos correlacionadas foi realizada a análise de correlação de Pearson. A modelagem foi feita utilizando os algoritmos Generalized Additive Models, Gaussian Process, MaxEnt, Random Forest e Support Vector Machine. Usando os melhores modelos foi gerado um modelo consenso. A validade dos modelos foi testada utilizando a métrica True Skill Statistic (TSS). Os resultados indicam que as duas espécies apresentam maior adequabilidade ambiental em ambientes com alta precipitação principalmente em países industrializados da América Latina à exemplo do Brasil e Colômbia. Além disso, as áreas de maior adequabilidade também correspondem à grandes centros urbanos com altos índices de poluição. Portanto, essas espécies podem ser utilizadas como bioindicadoras nessas regiões, auxiliando assim no processo de identificação e gestão do problema.
Anderson Emmer, João Arthur Dos Santos Oliveira, Andressa Domingos Polli, , Leonardo Hamamura Alves, Cintia Zani Fávaro Polonio, ,
Published: 27 May 2021
Acta Brasiliensis, Volume 5, pp 65-71; https://doi.org/10.22571/2526-4338496

Abstract:
Echeveria laui (Crassulaceae) is commonly commercialized due to its drought-tolerance capacity and to its rosette-shaped aesthetics. Since endophytes associated with plants from a dry or arid environment have scarcely been analyzed as yet, current research comprises the isolation of leaf endophytic bacteria from E. laui (one five-year-old and one two-year-old plants) investigating plant growth-promoting endophytic bacteria which may solubilize phosphate, fix nitrogen, produce exopolysaccharides/IAA and antagonize phytopathogens. Isolation by the maceration methodology provided a colonization rate of 1.98 x109 CFU g-1 for the two-year-old plant and 1.14 x 1010 CFU g-1 for the five-year-old one. All 40 isolates evaluated showed in vitro plant growth-promoting agent’s abilities, with emphasis on EG04, ELG18, and ELP06. The capacity of the three best bacterial isolates were evaluated under greenhouse conditions in common and black bean (Phaseolus vulgaris L.) plants. Based on the sequencing of the 16S rRNA region and phylogenetic analysis, the three endophytes were identified as Pantoea sp. (ELG04 and ELG18) and Erwinia sp. (ELP06). Under greenhouse conditions, statistically significant differences were found among the plants treated with the three endophytes when compared to control plants for fresh and dry shoot, root biomass and length.
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