... to tomatoes (Lycopersicon esculentum) and tomato-based products, such as ketchup, pizza sauce, tomato juice and tomato paste, lycopene is also found ... in watermelon, papaya, pink grapefruit and pink guava. Processed tomato products are more available dietary sources of lycopene than fresh ... , with 50% of this in the form of processed tomato products.Lycopene is an acyclic isomer of beta-carotene. Beta ...