Fatty acid
Malonyl-CoA is then involved in a repeating series of reactions that lengthens the growing fatty acid chain by two carbons at a time. Almost all natural fatty acids, therefore, have even numbers of carbon atoms. When synthesis is complete the free fatty acids are nearly always combined with glycerol (three fatty acids to one glycerol molecule) to form triglycerides, the main storage form of fatty acids, and thus of energy in animals. However, fatty acids are also important components of the phospholipids that form the phospholipid bilayers out of which all the membranes of the cell are constructed (the cell wall, and the membranes that enclose all the organelles within the cells, such as the nucleus, the mitochondria, endoplasmic reticulum, and the Golgi apparatus).
Cat food
Fatty acids are an important part of the cats diet, some are more important than others with respect to the cats diet and these are known as essential fatty acids. Essential fatty acids are nutrients that cats are unable to produce at all or in sufficient amounts to reach their needs. There are 3 essential fatty acids that should be included in a cats diets and they are: Alpha-Linolenic acid, Linoleic acid, and Arachidonic acid. Alpha-Linolenic acid is an Omega–3 fatty acid that is important to cats as it aids in the maintenance of their skin's water barrier. As the water barrier is important to the cats skin, ingredients that are high in Alpha-Linolenic acid, such as flaxseed, should be included in the cats diet. Another source of Omega-3 s are in fish oil however, it is higher in Eicosapentaenoic acid (EPA) and Docosahexaenoic acid (DHA) which can be important for cats as they have anti-inflammatory properties. Linoleic acid is an example of an Omega-6 fatty acid that also helps with the health of the cat's skin by maintaining the integrity of their epithelial tissues. Linoleic acid is commonly found in plant-based oils, an ingredient that is commonly used as a source of Linoleic acid is sunflower oil. Arachidonic acid is also essential to cats because they are unable to create it from linoleic acid due to an absence of the Delta 6 desaturase enzyme. It's important for their skin for the same reason as Linoleic acid and can be found in ingredients such as animal fat.