Supercritical Fluid Extraction of Natural Dyes from botanical Waste-An Innovative Approach

Abstract

Extraction is a vital prerequisite in most scientific studies involving the isolation and analysis of compounds from biological/environmental systems. Bioactive compounds are extracted from natural sources, and they have beneficial effects on human health. Fruits and vegetables are rich in carotenoids, phenolic compounds, and vitamin C, among others. Extraction processes for these compounds depend on several factors such as the technique that is used, the raw material, and the organic solvent. Conventional techniques generally require large amounts of organic solvents, high energy expenditure, and are time consuming, which has generated interest in new technologies that are referred to as clean or green technologies. The aim of present paper is to discuss the various advantages using green techniques- supercritical fluid extraction of bioactive compounds from fruit and vegetable wastes.Supercritical fluid extraction is the most effective and efficient way to extract valuable constituent botanicals. Supercritical Fluid Extraction (SFE) is the process of separating one component (the extractant) from another (the matrix) using supercritical fluids that is CO2 as the extracting solvent.