Avaliação da distribuição de cobre associado a compostos de diferentes massas moleculares na polpa de açaí

Abstract

ResumoNeste estudo, cromatografia de exclusão por tamanho (SEC) com detecção por UV e detecção off-line por espectrometria de absorção atômica em forno de grafite (GF AAS) foi usada para investigar a associação de cobre a espécies de alta massa molecular (HMW) e baixa massa molecular (LMW) presentes na polpa de açaí (Euterpe oleracea Mart.). A concentração total de cobre obtida nos digeridos da polpa de açaí foi 10,5 µg g -1. Cobre foi encontrado associado às frações de HMW e LMW, correspondentes às massas moleculares de 28,7, 2,6 e 0,43 kDa. PalavRas-chave: metal, SEC, GF AAS, proteínas, Euterpe oleracea Mart. Evaluation of the distribution of copper associated to compounds of different molecular weights in the acai pulp abstRactIn this study, size exclusion chromatography (SEC) with ultraviolet (UV) and graphite furnace atomic absorption spectrometry (GF AAS) off-line detection was used to investigate the association of copper to high molecular weight (HMW) and low molecular weight (LMW) species present in Euterpe oleracea Mart. pulp. Total concentration of copper was 10.5 µg g -1 .Copper was found to be associated to fractions corresponding to 28.7, 2.6 and 0.43 kDa.

Social weaknesses versus environmental conservation of Extractive Reserves in the Amazon

“…Furthermore, the difficulties of technological innovations nodded as rubber and Brazil nuts , reveal a barrier to improving the living conditions of extractivist, strengthening and verticalizing these activities (SILVA; PARAENSE, 2019). The income obtained with açaí is higher than with both activities (TRINDADE;NUNES;FERNANDES, 2012;JARAMILLO-GIRALDO et al, 2017). One of the reasons is that the fruit of açaí can be obtained quickly through management or planting and presents high commercial value when compared to other extractive products.…”