ABSTRACT
Citrus is one of the most cultivated and consumed fruit crops worldwide. These fruits are either eaten fresh or processed to produce juices and marmalades and as a result, large quantities of waste are generated. Citrus residues are a potential source of various added-value compounds like polyphenols, pectin, essential oils (EOs), etc., and the traditional extraction methods used to obtain them are usually time-consuming and use large quantities of toxic solvents. This chapter aims to discuss the effectiveness and operating conditions of novel extraction technologies like ultrasound-assisted extraction (UAE), microwave-assisted extraction (MAE), pulsed electric field technology (PEF), supercritical carbon dioxide (SC-CO2), subcritical water extraction (SWE), enzyme-assisted extraction (EAE), and ohmic heating extraction (OHE), etc., 202that affect the recovery of bioactive compounds from citrus residues. Valorization of citrus waste helps not only to reduce the environmental impact but also improves the global economy. Also, emerging technologies have proven to be a greener and more sustainable alternative to conventional extraction methods in terms of better extraction yields and reduced extraction times.
