Linolenic Acids
Fats in this group contain substantial amounts of linolenic acid (C18 triunsaturated).
Examples are soybean, mustard, rapeseed, flaxseed and wheat germ hempseed and perilla oils, with soybean being the most important. The abundance of linolenic acid in soybean oil is responsible for the development of an off-flavour problem known as 'flavour reversion'.