Evaluación del potencial antioxidante del extracto microencapsulado obtenido de los frutos de Myrcianthes hallii (o.berg) max vaugh mediante secado por aspersión y su formulación para una bebida natural

Abstract

Myrcianthes hallii (O.Berg) Max Vaugh, being an endemic plant of the Andes, with an antioxidant capacity represents an effective strategy to protect sensitive bioactive compounds, such as anthocyanins and polyphenols, against environmental factors and technological processes, being fundamental for the development of functional foods with high stability and added value. The extracts obtained from the fruits of Myrcianthes hallii, were microencapsulated by drying by spraying using maltodextrin as an encapsulating agent. A two squared factor design was applied to analyze the effect of solid, liquid ratio (1:20; 1:25) and extraction time (30, 45 minutes) on the retention of bioactive compounds. The extracts were characterized by FTIR spectroscopy, and their antioxidant capacity was determined by DPPH methods. The results showed how optimal conditions maximize the concentration of anthocyanins and polyphenols was a solid/liquid ratio of 1:25, extraction time 30 minutes. Based on these conditions it was obtained that the antioxidant capacity of the extract as microencapsulated in dilution factor 0.025, the percenta ge of DPPH Inhibition for the extract was 79.506 percent, microencapsulated 29.280 percent, in addition to the trolox was 372 plus minus 14.52 (micromole) for the extract and 265.186 plus minus 21.79 (micromole). In addition, showing significant interaction between both factors, highlighting that prolonged times can reduce the stability of antioxidant compounds. Microencapsulation allowed these compounds to be effectively preserved, this supports its application of the development of functional drinks with high antioxidant potential and rich in them, allowing the development of a natural drink, fortified with the bioactive compounds obtained.