Fettart

Fettart (German for "type of fat") is a term used in nutrition and food science to describe categories of fats according to their origin and chemical structure. It helps distinguish fats by whether they come from animals, plants, or marine sources, and by their degree of saturation and the geometry of their fatty acids.

Classification by origin includes animal fats (for example butter, lard, and tallow), plant fats (such as olive oil, soybean oil, and palm oil), and marine fats (notably fish oils). Chemical classifications include saturated fats (no double bonds), monounsaturated fats (one double bond), and polyunsaturated fats (two or more double bonds). Trans fats, produced by hydrogenation or found in small amounts in ruminant fats, are treated as a separate category. Essential fatty acids, including omega-3 and omega-6, are polyunsaturated fats that the body cannot synthesize.

Fettart also relates to fatty acid chain length (short-, medium-, and long-chain fatty acids) and to cis/trans geometry, which influence texture, melting point, and metabolic effects. In nutrition, different Fettarten have distinct health implications: unsaturated fats are generally associated with favorable heart-health profiles, while saturated fats and trans fats can raise LDL cholesterol and cardiovascular risk when consumed in excess.

Processing and storage affect Fettart. Techniques such as hydrogenation and interesterification modify saturation and melting properties, while oxidation can lead to rancidity, especially in polyunsaturated fats. Food labeling often communicates fat type and content, enabling consumers to balance dietary Fettarten according to guidelines.

Fettart is a broad, descriptive concept used in dietetics, culinary arts, and food technology to discuss the properties and effects of fats in foods and human health.