RECENT PROGRESS IN THE VALORIZATION OF PINEAPPLE WASTEINTO VALUE-ADDED BIOACTIVE COMPONENTS: A SYSTEMATICAPPROACH

Pineapples are widely consumed across the world, particularly in tropical regions and during processing generates massive waste, such as peel, core, pomace, crown, leaves, stems etc.Unfortunately, the disposal of these wastes results in environmental hazards.However, these wastes contain various value added constituents and can be effectively utilized in different industries, such as cosmetics, food, pharmaceuticals etc. Extraction of these compounds can be achieved through conventional e.g Soxhlet extraction, maceration, and hydro-distillation etc and non-conventional techniques e.g.ultrasound assisted (UAE), microwave assisted (MAE), supercritical fluid (SCFE), pressurized liquid (PLE), pulse electric field (PEF), enzyme assisted extraction (EAE), and liquid-liquid extraction (LLE) techniques are reviewed in this paper.The characterization of these compounds is also critical aspect to determine the quality and purity of the extracted compounds.HPLC, NMR spectroscopy are some of the technique which can be used to separate, quantified and characterized the bioactive components.In the present investigation, valorization of pineapple waste as a sustainable waste management strategy by extraction of valuable bioactive compounds using conventional and non-conventional extraction techniques, their isolation, quantification and characterization techniques are thoroughly reviewed.