Ascorbic acid is used as standard because of its availability in different food sources (especially citrus fruit extracts). ... Ascorbic acid gives better result than gallic acid,mainly gallic acid is used for determination of phenolic content as standard.

Why the determination of ascorbic acid is done using the iodometric process?

Ascorbic acid determination was carried out by iodine titration. When iodine is added to a starch solution, it reacts to produce a purple color. However, if there is any vitamin C in the solution, it “neutralizes” the iodine, preventing the formation of the purple color.

What is standard ascorbic acid?

Ascorbic acid or Vitamin C is the strongest natural water-soluble antioxidant, commonly used to measure antioxidant capacity. ... It is present in biological samples, like plasma, and food samples as a natural component of fruit and vegetables or as an additive.