Optimización de las condiciones de atomización de antioxidantes obtenidos de los subproductos de guayaba (Psidium guayaba)

Abstract

Guava contains antioxidants and polyphenols. In this research, the antioxidant capacity of the by-product of guava and its performance were evaluated, after being subjected to atomization. The variables used were input temperature (Te) (120–160 °C), flow pump (Fb) (10-4%), air flow (Fa) (20-40 mm height), and total solids concentration (cs) (2-10%) with encapsulates (gum arabic). The results obtained are 81% recovery, and in the quantification by ABTS were 158 μMol eq. of trolox/g atomized to 120 °C (Te) with 20 mm in height (Fa), 40% (Fb) and 10% (cs). FRAP was 297 μMol eq. of trolox/g atomized at an input temperature of 160 °C, 40 % (Fb), 40 mm in height (Fa) and 2% (cs). In DPPH was 143 µMol eq. trolox/g atomized with 10% (cs) at an input temperature of 120 °C, 40% (FB) and 20 mmm in height (Fa). Finally, in total phenols were 2667 mg GAE/100 g of atomized at 160 °C (Te), with 40% (Fb), 20 mm in height (Fa) and 2% (Cs), resulting in stable powders that have antioxidants.