Improvement of the Bioavailability of Amazonian Juices Rich in Bioactive Compounds Using Glow Plasma Technique

The effects of processing time (10, 20 and 30 min) and plasma flow rate (10, 20 and 30 mL min(-1) of synthetic air) on the bioactive compounds of camu-camu juice (Myrciaria dubia) treated using glow plasma were evaluated herein. Plasma technology promoted the increase of the bioactive compounds' concentration (antioxidant compounds, ascorbic acid and total monomeric anthocyanins) in the juice serum. Peroxidase and polyphenol oxidase presented the higher reduction of the enzymatic activity for treatments using plasma flow rate of 20 mL min(-1). The treatments with higher air flow rate presented great color change (Delta E* > 2). Furthermore, the bioavailability of ascorbic acid was increased after using plasma technology. Therefore, the cold plasma technology may represent a useful technique to improve the bioavailability of bioactive compounds in processed fruit juices.