Potential Application of Pulsed Electric Fields for Improving Extraction of Plant Pigments
摘要
Extraction of plant pigments using pulsed electric field (PEF) has been an area of intense attention for researchers due to promising new findings in the last several decades. PEF has been referred to as an innovative nonthermal tissue disintegration method with the potential to have less detrimental effects on tissue and the extraction of heat-labile pigments. Despite preliminary findings, research on PEF-assisted extraction of plant pigments is still in its early stages, requiring a deeper knowledge of the impacts of various pigments, cellular alterations, and effective extraction methodologies. So far, the extractability of red beetroot betanin via PEF has been most extensively investigated utilizing aqueous solid-liquid extraction techniques. Secondly, the PEF treatment proved to improve anthocyanin extraction from diverse tissues, yet less research was conducted on the extraction of oil-soluble pigments, chlorophyll, and carotenoids. The major purpose of this study was to provide readers with a basic understanding of plant pigment extraction using PEF, focusing on current advancements. The initial section of the work examines the role of PEF treatment per general extraction principles. The final section included specific instances of extracting main plant pigments, namely chlorophylls, carotenoids, betalains, and anthocyanins, from selected research studies. It reviewed the methods, techniques, and key findings.