The main difference between tartaric acid and citric acid is that the tartaric acid naturally occurs in grapes whereas citric acid naturally occurs in citrus fruits.
Tartaric acid and citric acid are two types of plant acids used as natural food additives. Both these food additives are available in powder and liquid forms. Also, both of them give a sour taste to the food. They have preservative properties as they prevent bacterial growth. Both tartaric acid and citric acid are antioxidants as well.
Key Areas Covered
1. What is Tartaric Acid
– Definition, Facts, Importance
2. What is Citric Acid
– Definition, Facts, Importance
3. What are the Similarities Between Tartaric Acid and Citric Acid
– Outline of Common Features
4. What is the Difference Between Tartaric Acid and Citric Acid
– Comparison of Key Differences
Key Terms: Antioxidant, Citric Acid, Plant acids, Preservatives, Tartaric Acid
What is Tartaric Acid
Tartaric acid (also known as dihydroxybunedioic acid or dicarboxylic acid) is a white crystalline organic acid. Grape is the natural source of this acid. Its salt, the potassium hydrogen tartrate, is called the cream of tartar. It is a by-product of wine fermentation.
Tartaric acid serves as an acidulant in carbonated drinks, gelatin desserts, etc. Cream of tartar is an ingredient in baking powder, taffies, and hard candies.
What is Citric Acid
Citric acid is a weak organic acid, and is an intermediate of Krebs cycle as well. Citrus fruits are the natural sources of this food additive, and it is commercially isolated from citrus fruit juice.
Citric acid forms chelating complexes having metal ions with large stability constants. Therefore, citric acid also functions as a chelater.
Similarities Between Tartaric Acid and Citric Acid
- Tartaric acid and citric acid are natural food additives.
- Both acids give a sour taste to the food.
- They both serve as preservatives since they prevent bacterial growth on food.
- Both are antioxidants.
- The two food additives are available in powder and liquid forms.
Difference Between Tartaric Acid and Citric Acid
Tartaric Acid: A white crystalline organic acid, which naturally occurs in grapes
Citric Acid: A weak organic acid, which naturally occurs in citrus fruits
Tartaric Acid: C4H6O6
Citric Acid: C6H8O7
Tartaric Acid: 150.086 g/mol
Citric Acid: 192.123 g/mol
Tartaric Acid: Found in grapes and grape-based wine
Citric Acid: Found in citrus fruit such as limes, lemons, and pineapples
Tartaric Acid: Sour
Citric Acid: Less sour
Tartaric Acid: An antioxidant
Citric Acid: Adds a sour taste to food and soft drinks
Tartaric Acid: E334
Citric Acid: E330
Tartaric acid and citric acid are naturally occurring plant acids. They serve as food additives, which give a sour taste to the food. Tartaric acid occurs in grapes while citric acid occurs in citrus food. The main difference between tartaric acid and citric acid is in their natural sources.
1. Brown, William H. “Tartaric Acid.” Encyclopædia Britannica, Encyclopædia Britannica, Inc., 17 Apr. 2016, Available here.
1. “CommercialTartaric” By Rei at English Wikipedia – Transferred from en.wikipedia to Commons (CC BY-SA 3.0) via Commons Wikimedia
2. “Citric-acid-3D-balls” By Benjah-bmm27 – Own work (Public Domain) via Commons Wikimedia