The researchers studied different types of litchi fruit to see how much chlorophyll and carotenoids they contained. These substances are important for plant growth and can indicate how healthy the plants are. They found that Bedana litchis had the highest chlorophyll levels, while China litchis had the lowest. Different varieties of litchis also had varying levels of carotenoids, with Bedana having the most. The study showed that the amount of chlorophyll and carotenoids in litchis can differ depending on the variety and the stage of growth.