Dados do Trabalho

Título

OBTAINING EXTRACTS RICH IN BIOACTIVE COMPOUNDS WITH ANTIOXIDANT CAPACITY FROM THE AMAZONIAN OILSEEDS BIOMASSES

Introdução

Amazonian oilseeds residues such as andiroba (Carapa guianensis), murumuru (Astrocaryum murumuru), and tucumã (Astrocayum vulgare) present high potential as by-products, offering significant alternative to be used in the natural products industry promoting sustainability in the Brazilian North region, encouraging practices of full use of resources, and strengthening environmental conservation and bioeconomy.

Material e Métodos

The objective of this work was to extract bioactive compounds from Amazonian oilseed residues using a 2³ type central composite rotational design (CCRD). The optimized condition of the process for each biomass was performed for andiroba, murumuru, and tucumã, resulting respectively in ethanol concentrations of 55, 55, and 65% (v/v), ratio solid/liquid of 2, 1 and 0.5% (m/v) and an ultrasonic bath time of 20, 20, and 50 min, after the residence time, all experiments were centrifuged and filtrated to obtain final extracts. The TPC, TF, and antioxidant capacity, measured using the DPPH and ABTS methods were analized.

Resultados e Discussão

The results showed that tucumã had the highest content of total phenolic compounds (179.06±0.32 mg EAG/g) and total flavonoids (19.08±0.02 mg QE/g), also standing out for its high antioxidant activity about the ABTS (129.18±56.76 µM TE/g) and DPPH (29.69±0.07 µM TE/g) methods. Andiroba and murumuru presented values of 92.13±0.87 and 99.24±0.23 mg EAG/g for CFT, 15.79±0.11 and 9.54±0.03 for FT and 20.86±0.08 and 23.92±1.16 µM TE/g for DPPH and 86.05±42.43 and 122.84±569.54 µM TE/g for ABTS. Regarding the percentage of inhibition by DPPH, the results were 47.97, 57.37 and 63.78% for andiroba, murumuru, and tucumã, respectively.

Conclusão

These results showed that the extracts were better than those found for some fruits in the region such as açaí, which ranges from 29.6 to 59.8 mg/g of CFT and antioxidant activity 10.21 to 52.47 μM of TE/g of sample in terms of ABTS. This indicates the high bioactive potential of these biomasses, once these compounds have antioxidant, anti-inflammatory, and anticancer properties that contribute to preventing chronic diseases, promoting cardiovascular health, and strengthening the immune system. Thus, using these residues can promote the development of new technologies and products, potentially adding economic value to local communities and contributing to biodiversity conservation and the population's health.