E numbers are codes assigned to food additives that are approved for use in the European Union and other regions. These additives serve various purposes, such as preserving food, enhancing flavor, or improving texture
They are categorized into different groups:

• E100–E199 – Food colorings
• E200–E299 – Preservatives
• E300–E399 – Antioxidants and acidity regulators
• E400–E499 – Thickeners, stabilizers, and emulsifiers
• E500–E599 – pH regulators and anti-caking agents
• E600–E699 – Flavor enhancers
• E900–E999 – Miscellaneous additives