Is Citric Acid (E330) Vegan?

Also known as: 2-hydroxypropane-1,2,3-tricarboxylic acid, Sodium citrate (E331), Potassium citrate (E332)

Vegan

Industrially produced via fermentation of molasses, corn syrup, or other carbohydrates using the fungus Aspergillus niger. No animal products are involved.

Ingredient Data

Vegan Status

Vegan

E-Number

E330

Also Known As

2-hydroxypropane-1,2,3-tricarboxylic acid; Sodium citrate (E331); Potassium citrate (E332)

Source

Industrially produced via fermentation of molasses, corn syrup, or other carbohydrates using the fungus Aspergillus niger. No animal products are involved.

Commonly Found In

Soft drinks, jams, sweets, tinned foods, wine, cheese, pharmaceuticals, cosmetics, cleaning products. The most widely used food acidulant globally.

Vegan Alternative

No substitute needed — E330 and its salts are vegan.

Additional Notes

Originally extracted from citrus fruit (hence the name), commercial citric acid has been produced via Aspergillus niger fermentation since 1919 — the citrus extraction route was immediately rendered uneconomic. Approximately 2.8 million tonnes are produced annually, with China accounting for approximately 70% of global output. Vegan and generally recognised as safe. Occasionally causes mouth sores in sensitive individuals at high doses.

In depth

How it is made

Virtually all commercial citric acid is produced by microbial fermentation rather than extraction from fruit. The dominant process uses the mold Aspergillus niger, which is fed a carbohydrate-rich substrate such as cane or beet molasses, corn-derived glucose syrup, or other refined sugars. As the fungus metabolizes the sugar, it secretes citric acid into the surrounding medium.

After fermentation, the broth is separated from the fungal biomass and the acid is recovered and purified, historically by precipitation with lime to form calcium citrate, followed by treatment with sulfuric acid and further filtration and crystallization. The finished product is a white crystalline powder.

Because the pathway relies on a fungus and plant-derived sugars, no animal inputs are used at any stage. The name is a historical holdover from the original citrus-extraction method, which was abandoned for industrial purposes once fermentation proved far cheaper and more scalable.

How to spot it on labels

Citric acid is one of the most consistently labeled additives, so it is rarely hidden. On ingredient lists it appears as "citric acid" or under its European E number, E330. Its common salts carry adjacent numbers: sodium citrate is E331 and potassium citrate is E332, both of which serve as acidity regulators, sequestrants, or emulsifying salts.

You will encounter it across sweet and savory products, from carbonated drinks and fruit preserves to canned vegetables, confectionery, wine, and processed cheese. It also appears widely outside food, in effervescent tablets, cosmetics, bath products, and household cleaners as a chelating and pH-adjusting agent.

Because it is plant- and fungus-derived, its presence on a label does not raise any vegan concern. Labels do not distinguish the sugar source, but that source is a carbohydrate feedstock rather than an animal product in standard commercial production.

Regulatory status and safety

Citric acid holds broad regulatory acceptance. In the European Union it is an approved food additive designated E330, and in the United States it is classified as generally recognized as safe (GRAS). It is used as an acidulant, antioxidant synergist, and acidity regulator without a numerical daily intake limit in most frameworks, reflecting its status as a naturally occurring compound present in the human metabolism.

The substance occurs naturally in the human body as part of the citric acid cycle, the central pathway of cellular energy production, which is one reason it is regarded as well tolerated. Most people consume it without any adverse effect.

At high concentrations or with frequent exposure, its acidity can contribute to dental enamel erosion, and some individuals report mouth or lip irritation. These effects relate to acidity and dose rather than to any animal-derived contamination, and they do not affect its vegan classification.

Frequently asked questions

Is citric acid vegan?

Yes, citric acid is vegan. Commercial citric acid is produced by fermenting plant-derived sugars with the fungus Aspergillus niger, with no animal inputs at any stage. Its salts, sodium citrate (E331) and potassium citrate (E332), are equally vegan.

Is citric acid made from citrus fruit?

No, almost all commercial citric acid is not extracted from citrus fruit. It is made industrially by fermenting carbohydrates such as molasses or corn syrup using Aspergillus niger. The name reflects the original fruit-extraction method, which was abandoned for industrial use after fermentation proved cheaper.

What is E330?

E330 is the European food additive number for citric acid. It functions as an acidity regulator, acidulant, and antioxidant synergist across a wide range of foods, drinks, and other products. It is vegan and widely approved for use.

Is citric acid in soft drinks and wine vegan?

The citric acid itself is vegan in soft drinks and wine. However, the vegan status of the finished beverage depends on other factors, particularly in wine, where animal-derived fining agents such as gelatin or isinglass may be used during processing. Check the full product for those separate ingredients.

Is citric acid safe to consume?

Citric acid is generally considered safe and is classified as GRAS in the United States and approved as E330 in the European Union. It occurs naturally in the body as part of the citric acid cycle. At high doses or frequent exposure its acidity may erode dental enamel or irritate the mouth in sensitive individuals.

← Back to Ingredients Submit a correction

Related entries

Agar

E406

Vegan

Allura Red AC

E129

Vegan

Annatto

E160b

Vegan

Ascorbic Acid

E300

Vegan

Carnauba Wax

E903

Vegan

Carrageenan

E407

Vegan