Vitamin B2, usually present as bright yellow or orange-yellow crystalline powder, is insoluble in water and has a slightly bitter taste. In nature, it is widely found in foods such as milk, eggs, green leafy vegetables, liver, etc. 
Functions and Applications:
1.Energy Metabolism: Riboflavin is involved in the metabolism of carbohydrates, fats, and proteins. It acts as a cofactor for enzymes that participate in the production of energy from these macronutrients. Without sufficient riboflavin, the body cannot efficiently utilize the energy obtained from food.
2.Cellular Growth and Repair: Riboflavin is necessary for cellular growth and repair processes. It supports the production of new cells and tissues, including skin, hair, and nails.
3.Antioxidant Activity: Riboflavin functions as an antioxidant, helping to neutralize harmful free radicals in the body. Free radicals are unstable molecules that can damage cells and contribute to aging and disease. By scavenging free radicals, riboflavin helps protect cells from oxidative stress and damage.
4.Eye Health: Riboflavin is important for maintaining healthy eyes and vision. It is a component of two essential enzymes involved in the production of glutathione, an antioxidant that helps protect the eyes from oxidative damage. Riboflavin deficiency can lead to eye disorders such as cataracts and photophobia (sensitivity to light).
5.Nervous System Function: Riboflavin plays a role in maintaining the health of the nervous system. It is involved in the production of neurotransmitters, which are chemical messengers that transmit signals between nerve cells. Adequate riboflavin intake may help support cognitive function and overall nervous system health.