Sitraattianionilla

Sitraattianionilla is the anionic form of citric acid. Citric acid is a weak organic acid with the chemical formula C6H8O7. When citric acid loses one or more protons (H+), it forms citrate anions. The most common forms are the monovalent citrate anion (C6H7O7-), the divalent citrate anion (C6H6O72-), and the trivalent citrate anion (C6H5O73-). In aqueous solutions, the specific form of citrate anion present depends on the pH. Citrate plays a crucial role in biological systems, most notably as an intermediate in the citric acid cycle (also known as the Krebs cycle), a central metabolic pathway for energy production in aerobic organisms. It is also involved in calcium homeostasis and acts as a chelating agent, binding to metal ions. In industry, citrate anions are used as food additives, acting as acidity regulators, preservatives, and flavor enhancers. They are also employed in cleaning agents, pharmaceuticals, and cosmetics due to their chelating properties and mild acidity. The salts of citric acid, which contain citrate anions, are commonly known as citrates.