ABSTRACT
The food processing sector is a very prominent section of the international market and increased up to approximately $4.5 trillion by 2024 (Businesswire in Global food processing market report, 2019: trends, forecasts, and competitive analysis (2013–2024), 2019 [1]). The increasing demand for healthy fruits and vegetables, organic processed foods, nutraceuticals and functional foods, seafood with packaged food products like ready-to-eat, and frozen processed foods is expected to drive the market growth after pandemic COVID-19 incidence. During processing and handling of horticultural crops, generate large volumes of wastes annually and become a major concern to the whole world. Fruits and vegetables have many bioactive compounds (polyphenols, flavonoids, organic acids, aroma, and flavoring agents, etc.) which have a positive impact on human health because of anti-inflammation, anti-allergic, anti-cancer, anti-atherogenic, and antioxidants properties, depending upon extraction their methods from wastes, efficacy, and bioavailability to the body. Applications of conventional (soxhlet, maceration, percolation, hydro-distillation) and green techniques (solid-phase, supercritical, accelerated solvent, microwave, and ultrasound extractions) for the valorization of horticultural wastes’ conversion in many bioactive components are followed by the potentiality, scalability, and sustainability of the extraction process and highlight the concept of the circular economy as “Waste to Wealth.” © 2021, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.