lycopene

Overview

Lycopene is a naturally occurring carotenoid and lipophilic pigment best known for its intense red color in tomatoes and other plant-derived foods. Biologically, it is widely studied as an antioxidant compound, and in the recent literature it is described as a potent lipophilic antioxidant with relevance to food science, plant metabolism, and delivery-system design. Because of its hydrophobicity and chemical instability, lycopene is often investigated in formulations intended to improve its stability, bioaccessibility, and functional performance.

In biomedical and nutritional research, lycopene is of interest as a bioactive phytochemical rather than as a conventional drug target. Recent studies have examined its accumulation in tomato, its extraction from agricultural byproducts, and its incorporation into nanocarriers and other delivery platforms. It has also been measured in tissue studies and used as a metabolic output in microbial engineering, reflecting its role as both a natural product and a marker of carotenoid pathway activity.

Focus of Latest Publications

Recent publications on lycopene have focused on both its biological effects and strategies to improve its delivery and stability. In disease models, lycopene was investigated for its potential to reduce airway remodeling in allergic asthma by suppressing epithelial-mesenchymal transition in airway epithelial cells. Another study examined lycopene as a candidate for mitigating aging-related cognitive impairment, using an engineered hydrophobic ferritin nanocage to improve encapsulation and brain delivery. In that work, the modified ferritin system substantially increased lycopene loading and was associated with improved spatial learning and memory, reduced hippocampal senescence, and modulation of oxidative stress, neuroinflammation, and synaptic plasticity through the BDNF/TrkB pathway in aging mice.

Several recent studies also addressed lycopene as a lipophilic antioxidant with limited stability and bioaccessibility. One report developed a nanostructured lipid carrier system for lycopene using soybean protein isolate nanoparticles coated with a metal-phenol network. This formulation improved lycopene stability during storage and thermal processing and increased in vitro bioaccessibility to 31.2%, compared with 13.1% for a pure protein-stabilized carrier. Another study described an intensified extraction and nanoemulsion preparation method from tomato peel powder using microemulsion and subcritical water techniques, identifying emulsifier conditions that yielded lycopene nanoemulsions with high lycopene content, small particle size, and antioxidant activity.

Additional work compared lycopene with the colorless carotenoid precursors phytoene and phytofluene in UV-irradiated liposome systems. Lycopene showed protective effects against UV-induced lipid oxidation, with the strongest effect under UV-A radiation, while phytoene showed similar protection under UV-C and UV-B radiation and phytofluene showed pro-oxidative behavior under the tested conditions. Beyond biomedical and formulation studies, lycopene was also used as a metabolic engineering product in Vibrio natriegens, where tunable CRISPR interference increased lycopene production 1.5-fold, highlighting its continued use as a target compound in microbial biosynthesis research.

Key Publications

• NEWJul Lycopene inhibits airway remodeling in allergic asthma models by suppressing the epithelial-mesenchymal transformation in airway epithelial cells. (European journal of nutrition, 2026, PMID 42397553): "Lycopene has been reported to inhibit the Th2 immune response in individuals with allergic asthma."
• Jun Tunable Transcription-Level CRISPR Interference in Vibrio natriegens Using Engineered Single Guide RNAs. (ACS synthetic biology, 2026, PMID 42190245): "Tunable repression of endogenous genes led to a 2.2-fold increase in 3-hydroxypropionic acid (3-HP) production and a 1.5-fold increase in lycopene production."
• May Protective effects of colorless carotenoid precursors against UV-induced lipid oxidation in liposomes compared to lycopene. (Scientific reports, 2026, PMID 42162221): "As lycopene supplementation alone had a weaker impact, the protective effect may be influenced by the colorless carotenoids phytoene and phytofluene."
• May Lycopene Extraction and Preparation of Its Nanoemulsion From Tomato Peel Using One Step Intensified Process Based on Microemulsion-Subcritical Water Technique. (Journal of food science, 2026, PMID 42053369): "Lycopene, a natural pigment with high antioxidant activity, is a main bioactive compound of the tomato processing waste."
• Apr Rational Protein Molecular Design of Hydrophobic Interior-Modified Ferritin Enables Efficient Lycopene Delivery for Ameliorating Aging-Related Cognitive Impairment. (Journal of agricultural and food chemistry, 2026, PMID 42009517): "Lycopene shows potential against aging-related cognitive decline but suffers from poor stability, low blood-brain barrier penetration, and inefficient delivery."
• Jun Soybean protein complexes as diglyceride nanostructured lipid carriers for lycopene delivery: preparation via metal-phenol network formation. (Food chemistry, 2026, PMID 41886988): "Lycopene (LYC), a potent lipophilic antioxidant, faces significant limitations in functional food applications due to its poor chemical stability and low bioaccessibility."