
Paulo Sergio Taube JuniorFederal University of Western Pará · Instituto de Biodiversidade e Florestas
Paulo Sergio Taube Junior
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Publications
Publications (73)
Mead is a fermented drink with honey as the main ingredient, being called melomel when fruits or grains are added. In this work, the objective was to evaluate the physical-chemical parameters and the antioxidant potential of mead produced with the addition of coffee. Meads were made in a process similar to wine making, involving the operations of p...
Introduction: In recent decades, studies have begun to analyze the therapeutic properties of honey, specifically in wound healing. The objective of this research was to investigate the tissue repair process of cutaneous wounds infected with Staphylococcus aureus in Wistar rats through the application of honey.
Methods: The antibacterial analysis r...
Introduction
Murici is valued by the local population for its healing, anti-inflammatory, and antioxidant properties, which are attributed to its phenolic compounds and ca-rotenoids, although its quality and properties are not well-known. Objective: This research aimed to evaluate the quality of murici pulp (Byrsonima spp.) commercialized in some p...
Beer is the most consumed alcoholic beverage in the world, containing numerous bioactive compounds. The market has innovated to provide better experiences for consumers, such as the development of craft beers with high levels of antioxidant compounds obtained by incorporating fruits. This study aimed to produce a craft beer of the Witbier type adde...
Desde a descoberta da penicilina em 1928, a pesquisa farmacêutica avan-çou na busca por novos antimicrobianos devido à resistência bacteriana. Plantas como o cumaru são promissoras, e a síntese de AgNPs demons-tra potencial contra uma variedade de patógenos. Este estudo sintetizou AgNPs usando extrato etanólico de folhas de Dipteryx odorata. As AgN...
Esta obra busca abordar visão multidisciplinar sobre a pesquisas e inovações nas áreas de Agrárias e Ambientais. Ela traz discussões que envolvem desde o aproveitamento tecnológico de frutas como a jaca e o maracujá até a análise da variabilidade genética de micro-organismos como Enterococcus faecium. Exploramos também o potencial da radiação gama...
Inadequate wastewater treatment infrastructure is a substantial worldwide concern, with implications for both the environment and public health. Specifically, the discharge of industrial effluents containing organic pollutants such as dyes represents a significant challenge due to their hazardous characteristics. Among these dyes, Bromophenol Blue...
The objective of this work was to synthesize, characterize and evaluate silver nanoparticles (AgNPs) obtained from the aqueous extract of pineapple peel. After optimizing the synthesis of AgNPs, colloidal solutions of AgNPs showed maximum absorbance around 460 nm. The AgNPs in the final concentration of 1, 3 and 5 mmol L ⁻¹ showed average values of...
The main source of human exposure to organochlorines is through food, especially food with a high fat content, such as breast milk, which is critical for child hood development. Therefore, it is important to analyze milk and other biological matrices for organochlorine pesticides (OCPs), and then determine the source of the OCP contamination. The o...
This study evaluated the physicochemical parameters of different honey samples produced in the lower Amazon region, including pH, soluble solids content, moisture, reducing sugars, and phenolic and biochemical compounds such as antioxidant and antimicrobial activity. The honeys with better antimicrobial activities were used to synthesize green silv...
The aim of this work was to produce and evaluate the quality of craft beers of the Witbier type, with different levels of acerola pulp (Malpighia emarginata) added. The production process involved milling, mashing, boiling, and adding hops, coriander, and acerola pulp, followed by yeast inoculation, fermentation, carbonation, bottling, and maturati...
Inadequate wastewater treatment infrastructure is a major environmental and public health concern worldwide. Industrial effluents containing organic pollutants such as dyes constitute a severe challenge due to their toxicity. Malachite green (MG) and methylene blue (MB) are two organic dyes that are widely used in textiles but also damage the envir...
Analyzing the organochlorine pesticide (OCP) content in milk is relevantbecause it helps evaluate the quality of milk that reaches the consumer's table and also helps identify the geographical areas where there is a high possibility of contamination. Accordingly,thispilot project was aimed at determining the extent of contamination by OCP residues...
Objetivou-se nessa pesquisa avaliar as características químico-bromatológicas de silagens de capim-elefante (Pennisetum purpureum Schum.) com adição de 0; 10; 20 e 30% do subproduto do abacaxi (Ananas comosus) com base na matéria natural do capim-elefante em delineamento inteiramente casualizado, contendo 5 repetições cada tratamento. O material fo...
The cowpea (Vigna unguiculata [L.] Walp) is of social and economic importance in developing countries. There are several factors that lead to low cowpea yields in tropical regions, such as pests and low technological development. This study aimed to identify and quantify losses in the critical component of production, and the key loss factors for t...
Este estudo objetivou avaliar a influência que os atributos físicos do solo podem exercer sobre a entomofauna edáfica, considerando uma área de Pousio e outra de Mata Nativa, coletando-se amostras de solo nas profundidades 0 – 20 cm e 20 – 40 cm, totalizando 49 amostras por profundidade, totalizando 98 amostras por área, avaliando-se: densidade do...
Ants are important components of food webs in several ecosystems. In anthropic areas, they can be used as bioindicators of the environmental impacts caused by many factors or in the evaluation of the dynamics of the recovery of an area after a certain disturbance. In this context, ants can be used as bioindicators in studies on the evaluation of en...
In the present study, we evaluated the physicochemical characteristics (color, humidity, soluble solids, free acidity, pH, ash content, carbohydrate content, and 5-HMF) and antioxidant activity (Folin-Ciocalteu reagent and DPPH free radical scavenging) of honey samples produced by different species of Meliponinae subfamily (n = 16) and A. mellifera...
A mandioca (Manihot esculenta Crantz) é a base de vários alimentos típicos da região norte do Brasil, dentre eles destacam-se a farinha de mandioca, farinha de água, goma de tapioca e o tucupi. Como certas variedades de mandioca apresentam elevado teor de cianeto, alimentos preparados a partir dessas variedades devem ser avaliados quando ao seu teo...
The presented study sheds light on the applicability of inductively coupled plasma optical emission spectrometry (ICP-OES) for the multielement analysis of naturally obtained water. The technique mainly focused on the determination of cadmium (Cd), chromium (Cr), copper (Cu), nickel (Ni), lead (Pb), and zinc (Zn) which are considered to be toxic me...
Understanding the environmental influences on insect pests and predator dynamics is essential for the development of integrated pest management strategies for common bean plants. This study aimed to determine the effects of the planting system, plant age, climatic variables, and predator populations on common bean pests under field conditions. Plan...
Peptides comprise a versatile class of biomolecules that present a unique chemical space with diverse physicochemical and structural properties. Some classes of peptides are able to naturally cross the biological membranes, such as cell membrane and blood-brain barrier (BBB). Cell-penetrating peptides (CPPs) and blood-brain barrier-penetrating pept...
Effluents from conventional intensive aquaculture, based on high water exchange, may strongly contribute to the acceleration of eutrophication processes, due to the significant nutrient load present in unconsumed foods and excreted waste. On the other hand, there are intensive and super-intensive systems for the cultivation of aquatic organisms tha...
O ensino de química não deve se basear no isolamento de informações definidas, separadas e tomadas como verdadeiras, mas sim possibilitar o processo construtivo do estudante que passa por constante mudança. O elo entre a teoria e a prática poderá despertar a criatividade, a percepção e a compreensão do cotidiano, contribuindo para que o aluno aprim...
O ensino de química não deve se basear no isolamento de informações definidas, separadas e tomadas como verdadeiras, mas sim possibilitar o processo construtivo do estudante que passa por constante mudança. O elo entre a teoria e a prática poderá despertar a criatividade, a percepção e a compreensão do cotidiano, contribuindo para que o aluno aprim...
The use of soil to implement several management systems, such as agriculture, livestock farming and agroforestry activities contribute to the depletion of the soil and the forest, reducing or increasing the levels of soil chemical attributes, such as calcium, magnesium, potassium, and phosphorus and increase or decrease of active (pH) or exchangeab...
This study proposes the preparation, characterization, and evaluation of the antimicrobial activity of silver nanoparticles (AgNPs). AgNPs were synthesized from the leaf extracts of plants from the Arecaceae family, which are abundant in the Amazon region. AgNPs were characterized using UV/Vis spectroscopy, Fourier Transform Infrared Spectroscopy (...
Introdução: O Nipah (NiV) é um vírus zoonótico emergente pertencente à família Paramyxoviridae que está envolvido com doenças respiratórias e neurológicas fatais em humanos. O NiV representa um desafio para a saúde pública com o risco potencial de disseminação pandemica, bem como, aplicação como agente de bioterrorismo. Metodologia: No presente est...
Nanotechnology is a cutting-edge area with numerous industrial applications. Nanoparticles are structures that have dimensions ranging from 1–100 nm which exhibit significantly different mechanical, optical, electrical, and chemical properties when compared with their larger counterparts. Synthetic routes that use natural sources, such as plant ext...
Amazonian Dark Earths (ADEs) are highly fertile soils in areas with predominance of unfertile soils. However, the variation in nutrient availability between regions and the resilience of ADEs to modern agricultural use is still little known, particularly regarding micronutrient contents. Hence, the present study synthesized current information of A...
Nos últimos anos, as nanopartículas de prata (AgNPs) têm atraído muita atenção devido às suas largas aplicações em diferentes campos como biotecnologia, microeletrônica, armazenamento de informação óptica, medicina e conversão de energia. O presente trabalho teve como objetivo sintetizar nanopartículas de prata a partir de amostras de mel de abelha...
Spice plants have a great influence on world history. For centuries, different civilizations have used them to condiment the foods of kings and nobles and applied them as embalming preservatives, perfumes, cosmetics, and medicines in different regions of the world. In general, these plants have formed the basis of traditional medicine and some of t...
Camu-camu [Myrciaria dubia (Kunth) McVaugh] is a native plant of the Amazon basin floodplains that is facing a domestication process in dry land. This study aimed to evaluate, qualitatively and quantitatively, camu-camu fruits obtained at the first harvest, in dry land areas, under mineral and organic fertilization. The experimental design was rand...
Background: Peptidyl-prolyl cis-trans isomerase NIMA-interacting 1 (Pin1) is an enzyme that isomerizes phosphorylated serine or threonine motifs adjacent to proline residues. Pin1has important roles in several cellular signaling pathways, consequently impacting the development
of multiple types of cancers.
Methods: Based on the previously reporte...
In this study, we report the green synthesis of silver nanoparticles (AgNPs) from extracts of native fruits from Amazonia, Brazil. AgNPs were characterized by UV/Vis and medium infrared (MIR) spectroscopy. Their antimicrobial activities were evaluated against the growth of bacteria and leavers, as well as the evaluation of minimum inhibitory concen...
The aim of this study was to quantify the macro and trace element concentrations in Apis mellifera and Melipona interrupta honey samples from the Lower Amazonian region in order to evaluate if the
samples of different geographical origin and/or species could be distinguished by their mineral content. In addition, it was evaluated the presence of po...
The chemical characterization by classical methods requires a long time of analysis and the use of expensive and environmentally aggressive reagents. The use of the partial least squares (PLS) tool applied to FT-MIR data represents a reduction of these considered variables. The relative contributions of glucose, fructose, and sucrose obtained for t...
Amazonian dark earths (ADE) are characterized by high fertility and organic carbon content, the latter being associated with black carbon (BC). BC is recalcitrant in nature due to its aromatic building blocks and it is expected to remain in the non-hydrolyzable fraction after the sequential extraction of soil organic matter (SOM). In this context,...
RESUMO O mel é um produto natural que apresenta várias propriedades benéficas para a saúde, tais como atividade antinflamatória, antioxidante e antimicrobiana, as quais dependem de sua composição. Neste contexto, as propriedades físico-químicas (cor, pH, conteúdo de cinzas, umidade, açúcares e compostos fenólicos totais) e a atividade antioxidadent...
The aim of this work is to determine the amount of Fe, Zn, Mn and Cu in nine samples of cassava roots by Flame Atomic Absorption Spectrometry using chemometrics tools such as multivariate exploratory analysis to explain possible differences in its chemical characteristics and Tukey test to verify the statistical significance of the mean values. Fou...
Honey is a natural product of high nutritional and therapeutic value. Western of Pará State is a very promising beekeeping region, but the number of dealers who adulterate at least one of the produt's phsioheial harateristis ireases as the eekeeping activity grows. Accordingly, the aim of the present study is to assess the quality of 09 samples of...
Os solos de Terra Preta de Índio (TPI) são solos antropogênicos, encontrados na região amazônica e ricos em matéria orgânica (MO). O objetivo desse estudo foi investigar e comparar a distribuição dos lipídios preservados nas frações " livres " em três pontos de coleta de solos TPI e dois pontos de coleta de solos adjacentes. Para isso, as amostras...
O mel é um dos produtos naturais mais completos, uma vez que sua composição possui alto valor nutricional e grandes benefícios a saúde, dependendo da sua origem ï¿¿oral. Nesse contexto, esta pesquisa objetiva-se em avaliar as características físico-químicas (cinzas, umidade, açúcares redutores, pH e cor) e potencial antioxidante (pelo radical DPPH)...
Neste trabalho foram avaliadas as propriedades físico-químicas de méis de abelha Apis melífera comercializados na cidade Santarém, Pará. As amostras de pH baixo variando ente 3,25 ± 0,01 e 3,44 ± 0,06). O teor de cinzas variou de 0,01% a 0,05% em relação à massa seca, sendo que nenhuma amostra analisada apresentou teores de cinzas acima do máximo e...
Este trabalho justi⠌í°°ca-se pela criação de um modelo de Analise por Componentes Principais (PCA) que relacione os teores de minerais de amostras de águas com suas respectivas fontes. Para isso foram coletadas amostras de igual proporção de três envasadoras, totalizando 30 amostras. Para a análise de minerais foi utilizado a técnica de ICP OES ten...
Soil organic matter (SOM) is a complex mixture of plants, animals and microbial-derived compounds. The SOM found in forest soils has a considerable portion of aliphatic structures, and three main fractions have been distinguished: extractable, hydrolysable, and non-hydrolysable. The presence of ester-bound lipids in tropical soils is frequently ass...
Candida species are the fourth most common cause of nosocomial bloodstream infections. It has been observed an increase in the frequency of infections which have become refractory to standard antifungal therapy. Recently, it was demonstrated the effect of different organochalcogenide compounds reducing both growth and germ tube formation by Candida...
Terra Preta de Índio (TPI) and Terra Mulata (TM) are anthropogenic soils from the Amazon region and are rich in stable organic matter (OM). The formation and incorporation of OM in these soils has recently been under investigation. Organic geochemical analysis is an appropriated tool for the assessment of the sources of OM. Therefore, we have used...
The ephedrine-based diselenide appears as a new promiscuous catalyst, able to generate optically active alcohols by addition of organozinc to aldehydes (up to 97% ee), and shows powerful GPx like activity, reducing H(2)O(2) to water in only 16.33 min (eleven times faster than PhSeSePh).
We evaluated the potential neuroprotective effect of 1-100 µM of four organoselenium compounds: diphenyl diselenide, 3’3-ditri-fluoromethyldiphenyl diselenide, p-methoxy-diphenyl diselenide, and p-chloro-diphenyl diselenide, against methylmercury-induced mitochondrial dysfunction and oxidative stress in mitochondrial-enriched fractions from adult S...
Candida species are the fourth most common cause of nosocomial bloodstream infections. An increase in the frequency of infections, which have become refractory to standard antifungal therapy, has been observed. Recent studies have shown that the pro-oxidant properties of diphenyl diselenide (PhSe)(2), a structurally simple organoselenium compound,...
We evaluated the potential neuroprotective effect of 1-100 µM of four organoselenium compounds: diphenyl diselenide, 3'3-ditri-fluoromethyldiphenyl diselenide, p-methoxy-diphenyl diselenide, and p-chloro-diphenyl diselenide, against methylmercury-induced mitochondrial dysfunction and oxidative stress in mitochondrial-enriched fractions from adult S...
Ebselen is a seleno compound whose antioxidant properties have been attributed to its thiol-peroxidase and thioredoxin-like activity. However, the excessive oxidation of thiols can be potentially toxic. Thus, this work investigated whether lactate dehydrogenase (LDH) can be a possible in vitro target to the toxicity of ebselen, in comparison with d...
O-Mesylated L-serine methyl ester, generated in situ, reacts with selenolate anions in a one-pot manner to yield various target compounds.
ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
In an environmentally friendly protocol, InI was used as a reducing agent for the Se-Se bond to prepare unsymmetrical diorganyl selenides with very short reaction times, mild conditions and excellent yields using (bmim)BF(4) as a recyclable solvent.
A simple and efficient procedure for the synthesis of β-seleno and β-thio amides via the ring-opening reaction of chiral 2-oxazolines in the presence of indium metal has been developed. Features of this method include the following: (i) easily and accessible starting materials; (ii) indium metal is more stable and less expensive then its respective...
Hypercholesterolaemia and oxidative stress are well-known risk factors in coronary artery diseases. Diphenyl diselenide is a synthetic organoselenium compound that has been shown to have in vitro and in vivo antioxidant properties. In this study, we investigated whether diphenyl diselenide could reduce the hypercholesterolaemia and diminish the tis...
Iron is more soluble at lower pH values; therefore we hypothesized that decreasing the environmental pH would lead to increased iron-mediated lipid peroxidation. Diphenyl diselenide and ebselen are potential candidates as neuroprotective agent, particularly in situations involving overproduction of free radicals and involving cellular pH fall. The...
ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
A set of chiral β-seleno amides were efficiently synthesized by a simple and efficient procedure involving a ring-opening reaction of 2-oxazoline with diorganyl dichalcogenides mediated by indium(I) iodide. As an application, the synthesis of selenocysteine derivatives was accomplished. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany,...