Molecular formula:C₆H₈O₇
Citric acid is a naturally occurring organic acid that is commonly found in citrus fruits like lemons, limes, and oranges. Its chemical formula is C₆H₈O₇, and it is widely known for its sour taste, making it a popular additive in food and beverages.
Natural Occurrence and Production
Citric acid is a key component of the citric acid cycle (or Krebs cycle), which is crucial for cellular respiration in all aerobic organisms. Although it is naturally found in fruits, commercial citric acid is predominantly produced through fermentation. The process involves cultivating the mold Aspergillus niger in sugar-rich solutions.