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Linseed oil, also known as flaxseed oil or flax oil (in its edible form), is a colorless to yellowish oil obtained from the dried, ripened seeds of the flax plant (Linum usitatissimum). The oil is obtained by pressing , sometimes followed by solvent extraction .
Flax, flax seeds, linseed oil, linseed cake. Linseed oil, also known as flaxseed oil or flax oil (in its edible form), is a colorless to yellowish oil obtained from the dried, ripened seeds of the flax plant (Linum usitatissimum). The oil is obtained by pressing, sometimes followed by solvent extraction.
The raw oil has a low acidity and can be used directly for cooking. Normally, it has a poor shelf life and will become rancid when stored for a long period. Its fatty acid composition is similar to sunflower oil and has high content of linoleic acid. It is used as a substitute for olive oil and can be mixed with linseed oil. The presence of ...
Sunflower, corn, and soybean oil have a higher proportion of omega-6 fatty acids than oils from fish, walnuts, flaxseed, and rapeseed (canola). Omega-6 fatty acids constitute a growing proportion of Americans' fat intake and have been hypothesized to contribute to several negative health effects, including inflammation [17] and immunodeficiency ...
Linseed oil's properties as a polymer make it highly suitable for wood finishing, for use in oil paints, as a plasticizer and hardener in putty and in making linoleum. [179] When used in food or medicinally, linseed oil is called flaxseed oil. Poppyseed oil, similar in usage to linseed oil but with better color stability. [176]
Other traditional uses include as an expectorant, astringent, and to treat bronchitis. [83] The essential oil of the plant has been used for centuries as a general tonic for colds and coughs, and to relieve congestion of the mucous membranes. Glycyrrhiza glabra: Licorice root: Purported uses include stomach ulcers, bronchitis, and sore throat. [84]
The early stages of the drying process can be monitored by weight changes in an oil film. The film becomes heavier as it absorbs oxygen. Linseed oil, for instance, increases in weight by 17 percent. [3] As oxygen uptake ceases, the weight of the film declines as volatile compounds evaporate. As the oil ages, further transitions occur.
Linseed's previous main use had been linseed oil for use as a paint ingredient, with the ALA (omega-3 fatty acid) being a quick drying component. With the advent of "plastic" water-based paints, the linseed market fell into decline, but when marketed as a stock feed, the omega-3 content also deteriorated quickly in storage.