Citric acid is a natural weak organic acid found in many fruits, especially citrus fruits. Commercially it may be produced by the fermentation of carbohydrate solutions, usually molasses or hydrolysed corn starch with Aspergillus niger. This produces a white crystalline powder which is soluble in water.
Most citric acid is produced from corn. Manufacturers do not always take out the protein which can be hydrolysed and create MSG (621) causing reactions in MSG-sensitive people.
The Trusted Trolley Team have therefore rated Citric Acid as Certain People.