Innovative Applications of Hill Lemon ( <i>Citrus pseudolimon</i> Tanaka) in Sustainable Bioprocessing: Bioactive Extraction, Nanoparticle Synthesis, and Functional Food Products

Hill lemon ( Citrus pseudolimon Tanaka) is an underutilized citrus fruit native to India, with significant potential in the food, pharmaceutical, and cosmetic industries due to its rich nutritional and bioactive profile. This review consolidates existing research on Hill lemon, highlighting its various components and their associated health benefits. Studies have documented its diverse health benefits, including antioxidant, antibacterial, antiviral, anti‐inflammatory, and anticancer properties. The leaves, peel, and seeds of Hill lemon are rich sources of bioactive compounds like limonene, citronellol, pectin, essential oils, and vitamin C, contributing to its beneficial properties. Despite its promising potential, the short shelf life of the processed Hill lemon juice presents a challenge for commercialization. This review underscores the need for further research to fully explore the potential of Hill lemon and its bioactive compounds, particularly in developing value‐added products with enhanced stability and extended shelf life.