linoleic acid is a polyunsaturated omega-6 fatty acid essential for human nutrition, meaning it must be obtained from the diet because the body cannot synthesize it. linoleic acid serves critical roles in maintaining healthy cell membranes, supporting skin barrier function, and acting as a precursor for other bioactive lipids involved in inflammation and cellular signaling.
chemical properties
chemical formula: C₁₈H₃₂O₂
molecular weight: 280.45 g/mol
structure: contains 18 carbon atoms with 2 cis double bonds at positions 9 and 12
solubility: insoluble in water; soluble in organic solvents and fats
density: 0.90 g/cm³
melting point: approximately -5°C
usefulness in medicine
linoleic acid supports skin health, improving hydration and barrier function, and is widely used in dermatological preparations.
it plays an essential role in growth, brain development, and maintaining cardiovascular health, reducing ldl cholesterol levels when replacing saturated fats in diets.
linoleic acid is converted to gamma-linolenic acid (gla) and arachidonic acid (aa), involved in inflammatory responses, immune function, and hormone-like signaling molecules (prostaglandins, leukotrienes).
antimicrobial activity
linoleic acid exhibits direct antimicrobial activity, particularly effective against various bacteria and fungi, disrupting microbial membranes and inhibiting their growth.
bacteria:
fungi: