Carotenes are the organic pigments responsible for various shades of yellow, orange, and red in plants. They are also known as carotenoids, which includes both carotenes and xanthophylls. Carotenes are found in high concentrations in orange and yellow fruits and vegetables such as carrots, pumpkins, and sweet potatoes. They are essential nutrients for maintaining good vision, healthy skin, and the immune system. Other synonyms for carotenes include beta-carotene, lycopene, lutein, zeaxanthin, and astaxanthin. These compounds are also used in the food, cosmetic, and pharmaceutical industries for their antioxidant and colorant properties.