What is vitamin C （维C课件）幻灯片课件.pptVIP

Vitamin C梁雷 What is vitamin C ? Vitamin C is also called L - ascorbic acid, is a water-soluble vitamin.Its the chemical formula of C6H8O6. Physiological function 1.promote collagen biosynthesis. 2.improve the metabolism of the amino acid tyrosine and tryptophan, extend the life of the body. 3.improve the use of iron, calcium and folic acid. 4.improving fat metabolism and lipid especially cholesterol, prevent cardiovascular disease. 5.promote the growth of teeth and bones, prevent bleeding gums, prevent joint pain, waist and leg pain. 6.strong connective tissue. 7.promote the synthesis of collagen, prevent bleeding gums. Appropriate crowd 1. easy to fatigue. 2. people who work in environmental pollution. 3. smoking people. 4. engaged in strenuous exercise, and high intensity of labor. 5. scurvy patient. 6. face with pigment spots. 7. long-term medication. 8. cataract patients.