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Santos M.F.G.,Institute Pesquisas Cientificas e Tecnologicas do Amapa | Alves R.E.,Embrapa Agroindustria Tropical | Roca M.,Pablo De Olavide University
Grasas y Aceites | Year: 2015

The oils obtained from native palm fruits are considered new sources of high added value phytochemicals, making it necessary to know the composition of the less studied species in order to evaluate their economic potential. The objective of this study is to identify and quantify the carotenoids in palm fruit oils from the Brazilian Amazon: bacaba (Oenocarpus bacaba), buriti (Mauritia flexuosa), inajá (Maximiliana maripa), pupunha (Bactris gasipaes) and tucumã (Astrocaryum vulgare), by means of liquid phase extraction and HPLC-UV-vis. analysis. The results showed an extremely variable carotenoid content, from 13 mg·kg-1 in bacaba oil to more than 1000 mg·kg-1 in the tucumã one. The oils obtained from buriti, pupunha and tucumã displayed high concentrations of β-carotene, corresponding to fruits with the series β, β dominant metabolism. Upon analyzing the carotenoid profile in bacaba oil for the first time, an extraordinary dominance of the β, ε pathway was observed, proving them to be oils with high lutein and α-carotene contents. Although the β, β pathway dominates in inajá oil, the exclusive and high lycopene content implies that LCY-E is barely active in these fruits, in contrast to what has been evidenced so far. It is therefore of the utmost importance to characterize these new potential sources of carotenoids. © 2015 CSIC. Source


Braganca P.H.N.,Federal University of Rio de Janeiro | Costa W.J.E.M.,Federal University of Rio de Janeiro | Gama C.S.,Institute Pesquisas Cientificas e Tecnologicas do Amapa
Ichthyological Exploration of Freshwaters | Year: 2011

Poecilia waiapi, new species, is described from the lower Jari river drainage, in northern Brazil. It is hypothesized to be closely related to P. branneri, P. minima and P. sarrafae by sharing eight apomorphic conditions. Poecilia waiapi differs from all of its congeners by the presence of vertical dark gray bars on the flank in males (vs. bars absent in P. bifurca, P. picta and P. parae; vertical pale gray bars in P. sarrafae, P. minima and P. branneri); post-humeral blotch densely pigmented (vs. post-humeral blotch absent in P. branneri, post-humeral blotch slightly pigmented in P. sarrafae, P. minima, P. picta, P. bifurca, P. parae). © 2011 by Verlag Dr. Friedrich Pfeil. Source


Martins A.C.M.,Institute Pesquisas Cientificas e Tecnologicas do Amapa | Bernard E.,Federal University of Pernambuco | Gregorin R.,Federal University of Lavras | da Silva W.A.S.,Institute Pesquisas Cientificas e Tecnologicas do Amapa
Zoologia | Year: 2011

Brazil is the second most bat species-rich country in the world, but the information on its species diversity, occurrence and distribution is still heterogeneous and fragmented. None of the Brazilian biomes are well surveyed for bats, but this situation is more critical in Amazonia, an area covering nearly 2/3 of the country. Here we provide updated information on the bats of Amapá, once a data gap in the diversity and distribution of bats in the easternmost Amazonia, and the Guiana Shield as well. Rapid biological assessments (5,551 mistnet.hours) were conducted in conservation units and areas of concern, resulting in 1,695 captures, 59 species, 36 genera and six families for the State. New records for the state and for the Guiana Shield area are reported. With our records, 82 species of bats are currently known in Amapá, filling a gap in the knowledge of bat fauna in the Amazon River's delta region. © 2011 Sociedade Brasileira de Zoologia. All rights reserved. Source


De Medeiros F.A.,Institute Pesquisas Cientificas e Tecnologicas do Amapa | Medeiros A.A.N.,Federal University of Paraiba | Tavares J.F.,Federal University of Paraiba | Filho J.M.B.,Federal University of Paraiba | And 2 more authors.
Quimica Nova | Year: 2012

The phytochemical investigation of L. macrophylla Benth led to the isolation of a new flavanol named licanol: (-)-4'-O-methyl-epigallocatechin-3'- O-?-L-rhamnoside, along with nine known compounds, identified as: (-)-4'-O-methyl-epigallocatechin, pheophytin A, 132-hydroxy-(132-S)-pheophytin A, pheophytin B, sitosterol, stigmasterol, sitosterol-β-O-glucoside, betulinic alcohol and oleanolic acid. The structures were established based on IR, HR-ESI-MS, and NMR spectrometric data analysis with the aid of 2D techniques. The methanolic extracts of leaves and stem bark as well as the compounds licanol, 132-hidroxi-(132-S)-feofitina A, and betulinic alcohol demonstrated antimicrobial activity against several bacterial strains. Source

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