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Published on: August 16, 2018
Cultivar-Dependent Biosynthesis, Sustainable Recovery, and Industrial Applications of Tomato-Derived Carotenoids
Han-Sol Kim1, Byungwoon Goo2, Seunghee Kim1,2
1Department of Life Science, Sangmyung University, 20, Hongjimun 2-Gil, Jongno-Gu, Seoul 03016, Republic of Korea.
Abstract:
Tomato (Solanum lycopersicum L.) exhibits extensive cultivar diversity in fruit morphology, color, and bioactive compounds. These are closely associated with genetic background, ripening stage, and carotenoid metabolic regulation. Carotenoids, especially lycopene and β-carotene, are major determinants of tomato coloration and are also nutritionally and industrially important high-value-added antioxidants. Carotenoid profiles are regulated by changes in related biosynthetic pathways, including precursor supply, desaturation, isomerization, and cyclization. Key genes such as PSY1, CRTISO, LCY-B and LCY-E play central roles in carotenoid synthesis and accumulation, thereby determining color phenotypes. Mutations and genome-editing (CRISPR/Cas9) approaches can modify carotenoid metabolic flux and develop cultivars with improved nutritional traits. Furthermore, advanced and sustainable recovery strategies for carotenoids (ultrasound-, microwave-, enzyme-, high-pressure-, deep eutectic solvent-, and supercritical fluid-assisted extraction methods) have been developed for efficient pigment extraction. In this review, we compare the physiological and molecular characteristics of diverse cultivars and traits of advanced bioprocesses in terms of carotenoid extraction efficiency and solvent safety. Finally, we discuss various encapsulation techniques that improve product stability and storage performance in industrial applications. Taken together, we review practical strategies combining cultivar-based carotenoid production, sustainable recovery, and product stabilization.
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