Beta-carotene has the following effects and benefits:
First, the role of the visual system
1. Constitute the photosensitive substance in the visual cells
-In the retina, β-carotene can be converted to retinaldehyde. Retinal is a component of rhodopsin, a visual pigment that is sensitive to low light. When light hits the retina, rhodopsin undergoes a conformational change, creating neural impulses that allow us to see objects in dim environments.
- If there is A lack of vitamin A source substances such as β-carotene, it will lead to insufficient synthesis of rhodopsin and affect dark adaptation, which can lead to night blindness in severe cases.
Second, antioxidant effect
1. Free radicals
Beta-carotene is a potent antioxidant that can scavengers free radicals in the body, such as singlet oxygen and superoxide anion radicals. These free radicals are produced during normal metabolism and can also be induced by external factors such as ultraviolet radiation, pollution, and smoking.
-Free radicals are highly reactive, and if they accumulate in large quantities in the body, they will attack biological macromolecules such as biofilms of cells, proteins, and DNA, leading to cell damage, aging, and disease. β-carotene protects cells from oxidative damage by providing electrons to neutralize free radicals.
2. Delay cellular senescence
-β-carotene contributes to the maintenance of normal cellular structure and function due to its regulatory effect on intracellular REDOX status. By reducing the damage of free radicals to cells, it can delay the aging process of cells and maintain the vitality of cells, which has a certain significance for the overall body function and appearance of aging.
Third, enhance immune function
1. Promotes development and function of immune cells **
Beta-carotene has a positive effect on the development and function of a variety of cells in the immune system such as lymphocytes and macrophages. Lymphocytes are important immune cells in the immune system, which are divided into T lymphocytes and B lymphocytes, and they play a key role in specific immune response.
-Macrophages have the function of engulfing pathogens and removing foreign bodies from the body. β-carotene can regulate the activity of these immune cells, enhance the body's ability to recognize and clear pathogens, and thus improve the overall immune defense ability.
2. Reduce the risk of infection
- Adequate β-carotene intake helps to reduce the risk of infectious diseases. In the case of enhanced immune system function, the body can more effectively resist the invasion of bacteria, viruses and other pathogens. For example, in some studies of children and the elderly, β-carotene supplementation has been found to reduce the risk of respiratory infections
