The oxalic acid in spinach makes it harder for ... meal may inhibit the absorption of the iron your meal contains. Ascorbic acid (vitamin C) can increase the absorption of iron when they are ...

Banana Naturally ripened bananas have malic acid as the main organic acid, with citric and oxalic acids present ... as well as other organic acids like ascorbic, glycolic, and citric acids.

A small amount of ferric oxide is added to a solution of oxalic acid, a commonly used cleaning and bleaching agent. Once the rust is dissolved, potassium carbonate is slowly added to the solution ...