Morphological and Biochemical Modification of Guava Processing Industrial Bio-mass by Dielectric Barrier Discharge Atmospheric Plasma Treatment and Effect on Yield of Bio-materials

Abstract

The potential effect of dielectric barrier discharge atmospheric (DBDA) plasma pre-treatment of the guava pomace powder on the evolution of physicochemical, structural and functional properties have been investigated. By single-factor experiments using response surface methodology (RSM), the Box–Behnken experimental results showed that optimum extraction conditions as follows: DBDA plasma treatment condition as 35 kV for 15 min and solvent extraction conditions was determined as 80°C for 360 min caused an increment of the oil yield up to 16.54% when extracted using solvent extractor with ethanol as a solvent. These results indicate that the DBDA plasma treatment previous to the extraction step in the edible oil extraction process can contribute to reduce the duration, increase the oil yield and improves the nutritional quality of the oil. This research helps to develop a novel and economical method for improving the extraction efficiency of oil and to fully valorize the guava fruit processing industrial waste into biomaterial.