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de Bessa N.G.F.,University of Aveiro | de Bessa N.G.F.,Fundacao Centro Universitario UnirG | Borges J.C.M.,Fundacao Centro Universitario UnirG | Beserra F.P.,Fundacao Centro Universitario UnirG | And 8 more authors.
Revista Brasileira de Plantas Medicinais | Year: 2014

This qualitative study aimed to characterize the groups of secondary metabolites and some constituents of 9 species of native medicinal plants of the Cerrado region used by the rural community of Vale Verde Settlement, identifying their biological and pharmacological potential. The information on medicinal plants were obtained through ethnobotanical and ethnopharmacological studies performed during the period 2010-2012. The botanical material collected was identified and deposited in the Herbarium of the Federal University of Tocantins, Porto Nacional (TO). The ethanolic and methanolic extracts were obtained from the oven dried material, filtered and concentrated in a rotary evaporator under reduced pressure, then weighed and placed again in an oven for 24h at 50 ° C, obtaining the yield (m / m), resulting from the ratio between the mass of concentrated extract and the mass after drying. Phytochemical analysis of selected plants was done using the methodology of Preliminary Prospecting, with tests for the detection of some important constituents and of the main groups of metabolites: saponins, phenols and tannins, catechins, steroids and triterpenoids, coumarins, anthraquinones and flavonoids. The tests were considered positive by the reactions of precipitates with colorations, the formation of foams and colored stains. Phytochemical tests performed on the extracts revealed the presence of constituents of secondary metabolism of plants, which can help to identify chemical markers of species. These markers are indispensable for testing quality and integrity of phytochemicals and a safer popular use of medicinal plants, enabling a better pharmacognostic control of these species and guidance for their use and applications in research by the preliminarily known bioactivity. In this case, it is especially due to the antimicrobial, antioxidant and anti insect activities, suggesting an association with the presence of phenolic compounds and flavonoids, positive in extracts of most species. These data are novel in Tocantins and strategic for the strengthening of conservation policies of Legal Reserve Areas within the Cerrado, priority biome for the conservation of biodiversity, improving the characterization of medicinal resources still available in the regional native flora, also foreseeing their biological and pharmacological applications.


Pereira M.A.B.,Fundacao Centro Universitario UnirG | Tavares A.T.,Federal University of Tocantins | Silva E.H.C.,Sao Paulo State University | Alves A.F.,Federal University of Tocantins | And 2 more authors.
Ciencia e Agrotecnologia | Year: 2015

The high temperature of growth environment can affect the postharvest quality of tomato fruits. In this situation, an alternative for the farmers is the use of hybrid cultivars that produce long shelf life fruit with longer postharvest shelf life when compared to normal varieties of fruits. The objective of this research was to compare the postharvest conservation of fruits of structural long shelf life tomato hybrids and with the mutant rin. The fruits evaluated were from fifteen tomato genotypes produced under the edaphoclimatic conditions of the southern State of Tocantins, being four of them long shelf life type hybrids (with rin allele) which were: Tyler, Rebeca, Carmem and AF 13527; nine of them structural long shelf life hybrids: Lumi, Débora Max, Michelli, Tammy, AF 12525, AF 11097, AF 13363, AF 13364 and AF 13525; and two normal fruit cultivars: Santa Clara and Drica. The fruits were harvested at the breaker stage and stored in a controlled environment (20 °C and relative humidity of 60%). The half-life firmness of fruits of genotypes with a structural genotypic long shelf life background ranged from 6.25 to 13.44 days for the genotypes Tammy and AF13525, respectively, not differing from the long shelf life genotypes with rin allele. Despite the fact that daytime temperatures are higher than those recommended for the tomatoes crops, it was observed that if the fruits are stored in appropriate conditions (20 °C and relative humidity of 60%), the color and firmness of the fruits with a long shelf life genotypes with rin allele and structural genotypic background evolve more slowly than the fruits of normal genotypes. Under these conditions, it took the fruits 7 to 8 days to acquire a red color on more than 80% of the surface after being harvested. © 2015, Federal University of Lavras. All rights reserved.


Pereira M.A.B.,Fundacao Centro Universitario UnirG | De Azevedo S.M.,Sakata Seed Sudamerica | De Freitas G.A.,Federal University of Tocantins | Dos Santos G.R.,Federal University of Tocantins | Do Nascimento I.R.,Federal University of Tocantins
Revista Ciencia Agronomica | Year: 2012

The objective of this work was to evaluate the adaptability and stability of 15 tomato genotypes in the area of Gurupi, Tocantins. The experiments were carried out in two environments [greenhouse: in the summer (December to March) and in open field: winter (June to September)], with 15 experimental tomato genotypes, being: four of the type long shelf life commercial ripening mutants and pre-commercial (rin): Tyler, Rebeca, Carmem and AF 13527; nine of the type long shelf life structural commercials and pre-commercial: Lumi, Débora Max, Michelli, Tammy, AF 12525, AF 11097, AF 13363, AF 13364 and AF 13525; and two of normal fruits: Santa Clara and Drica, in randomized block design with three repetitions. The long life genotypes e Tyler, Rebeca, AF 13364, AF 13525, AF 13527 it were classified as of stability and wide adaptability and wide adaptability for yield. For the average weight of commercial fruits, the genotypes Tyler, Michelli and AF 11097 presented wide adaptability to the evaluated environments.


Dotto M.C.,Federal University of Tocantins | Erasmo E.A.L.,Federal University of Tocantins | Pereira M.A.B.,Fundacao Centro Universitario UnirG | Coutinho A.B.,Federal University of Tocantins | And 2 more authors.
Revista Brasileirade Ciencias Agrarias | Year: 2013

An alternative method for producing organic fertilizer from waste toilets are septic biodigestoras. It has a fertilizer excellent quality and low cost. It is an affordable technology for small producers, however , still relatively widespread in Tocantins . Lemon balm (Lippia alba) is a medicinal plant contemplated in phytotherapy programs in Brazil and used by farmers. From the design of the integrated use of available resources on the farm was associated in this research, the medical, agricultural and environmental interest. The objective was to analyze the dose of effluent produced from Septic Rural Resettlement in the municipality of Gurupi - TO and their respective effect on growth, biomass and nutrient content in the leaves of lemongrass. Effluent applied to plants / pot in the soil 5 doses (0, 1.9 , 3.8 , 5.7 and 7.6 L m -2) were evaluated . This fertilization positively influenced the dry biomass, height , leaf number , leaf area and levels of nitrogen and magnesium in plants after 75 DAP . The best results in plant growth occurred at doses of 7.6 l m-2 biodigestora septic tank effluent.

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