Pulsed Electric Field-Assisted Green Extraction of Betalains and Phenolic Compounds from Opuntia stricta var. dillenii Prickly Pears: Process Optimization and Biological Activity of Green Extracts

Opuntia stricta var. dillenii (OPD) fruits are rich in betalains and phenolic compounds, which are recognized for their potential health-promoting properties. This study focuses on the optimization of pulsed electric field (PEF)-assisted solid–liquid green extraction (SLE) from OPD whole fruit, using response surface methodology (RSM) experimental design to obtain green extracts rich in bioactive compounds. The optimal PEF pre-treatment conditions (electric field strength and energy input)...