Vitamin A/B1/B2 vitamin C vitamin D

       1. Vitamin A‌

• ‌Definition‌: A fat-soluble vitamin essential for vision, immune function, and skin health, including ‌retinol‌ and its derivatives

• ‌Food sources‌: Liver, carrots, spinach, and fortified dairy products

• ‌Applications‌:

• ‌Cosmetics‌: Retinol esters improve skin texture and reduce wrinkles

• ‌Health‌: Prevents ‌night blindness‌ and supports epithelial tissue integrity

 ‌      2. Vitamin B1 (Thiamine)‌

•  Definition‌: A water-soluble vitamin critical for energy metabolism and nerve function
  

• ‌Food sources‌: Whole grains, pork, and legumes
  

• ‌Applications‌:

• ‌Medical‌: Treats ‌beriberi‌ and peripheral neuropathy

• ‌Supplements‌: Available as tablets for dietary supplementation

‌       3. Vitamin B2 (Riboflavin)‌

• ‌Definition‌: A coenzyme involved in energy production and antioxidant activity

• ‌Food sources‌: Eggs, dairy, and leafy greens

• ‌Applications‌:

• ‌Pharmaceutical‌: Used in tablets to address ‌deficiency symptoms‌ like cracked lips

• ‌Industrial‌: Added to fortified foods (e.g., cereals)

‌       4. Vitamin C (Ascorbic Acid)‌

• ‌Definition‌: A water-soluble antioxidant vital for collagen synthesis and immune support

• ‌Food sources‌: Citrus fruits, strawberries, and bell peppers

• ‌Applications‌:

• ‌Food additive‌: Prevents oxidation in beverages and meats

• ‌Cosmetics‌: Brightens skin and enhances lip care products

‌       5. Vitamin D‌

• ‌Definition‌: A fat-soluble vitamin synthesized via sunlight exposure, regulating calcium absorption

• ‌Food sources‌: Fatty fish, fortified milk, and egg yolks