Flaxseeds occur in two basic varieties/colors: brown or yellow (golden linseeds).Most types of these basic varieties have similar nutritional characteristics and equal numbers of short-chain omega-3 fatty acids. An exception is a type of yellow flax called solin (trade name "Linola"), which has a completely different oil profile and is very low in omega-3s (alpha-linolenic acid (ALA), specifically).
Flaxseeds produce a vegetable oil known as flaxseed oil or linseed oil, which is one of the oldest commercial oils. It is an edible oil obtained by expeller pressing and sometimes followed by solvent extraction. Solvent-processed flaxseed oil has been used for many centuries as a drying oil in painting and varnishing.
Although brown flaxseed varieties may be consumed as readily as the yellow ones, and have been for thousands of years, its better-known uses are in paints, for fiber, and for cattle feed.
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