Rolled Oats
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Rolled Oats
A tablespoon of rolled oats
Close-up

Rolled oats are a type of lightly processed whole-grain food. Traditionally, they are made from oat groats that have been dehusked and steamed, before being rolled into flat flakes under heavy rollers and then stabilized by being lightly toasted[].

Rolled oats that are sold for porridge usually have had the tough outer bran removed.[] They have often, but not always, been lightly baked, pressure-cooked, or otherwise processed in some fashion. Thick-rolled oats are large whole flakes, and thin-rolled oats are smaller, fragmented flakes. Rolled whole oats, without further processing, can be cooked into a porridge and eaten as old-fashioned oats, but more highly fragmented and processed rolled oats absorb water much more easily and therefore cook faster into a porridge, so they are sometimes called "quick" or "instant" oats.

Besides porridge, rolled oats are most often the main ingredient in granola and muesli. They can be further processed into a coarse powder, which, when cooked, becomes a thick liquid like broth. Finer oatmeal powder is often used as baby food.

Process

The oat, like other cereals, has a hard, inedible outer husk that must be removed before the grain can be eaten. After the outer husk (or chaff) has been removed from the still bran-covered oat grains, the remainder is called oat groats. Since the bran layer, though nutritious, makes the grains tough to chew and contains an enzyme that can cause the oats to go rancid, raw oat groats are often further steam-treated to soften them for a quicker cooking time (modern "quick oats") and to denature the enzymes for a longer shelf life.[1]

Steel-cut or pinhead oats

Steel-cut or pinhead oats are oat groats that have been chopped into smaller pieces before any steaming and thus retain bits of the bran layer.

Preparation

Rolled oats can be eaten without further heating or cooking: The oats are soaked for 1-6 hours in water-based liquid, such as water or fruit juice. The soak duration depends on shape, size and pre-processing technique, saving the time and the energy spent on heating, preserving its taste, and saving its nutritional values destroyed during cooking.[2][3]

Traditionally, oat groats are a whole grain that can be used as a breakfast cereal, just like the various forms of oatmeal, rolled oats and pinhead oats can be cooked to make porridge.[4] Rolled oats are used in granola, muesli, oatcakes, and flapjacks (like a granola bar, not a pancake).

Nutrients

Whole oats are an excellent source of thiamine, iron, and dietary fiber. Whole oats are also the only source of antioxidant compounds known as avenanthramides; these are believed[by whom?] to have properties which help to protect the circulatory system from arteriosclerosis.[5] Oat products also contain beta-glucan.

See also

References

  1. ^ "Types of Oats". The Whole Grain Council. Retrieved 2016.
  2. ^ "Vitamin stability after cooking" (PDF).
  3. ^ Alexander, JC (1981). "Toxicity of heated fats". J Toxicol Environ Health. 7 (1): 125-38. doi:10.1080/15287398109529964. PMID 7265292.
  4. ^ Cloake, Felicity (10 November 2011). "How to cook perfect porridge" – via The Guardian.
  5. ^ Thomas, Michael; Kim, Sharon; Guo, Weimin; Collins, F.; Wise, Mitchell (17 January 2018). "High Levels of Avenanthramides in Oat-Based Diet Further Suppress High Fat Diet-Induced Atherosclerosis in Ldlr-/- Mice". Journal of Agricultural and Food Chemistry. 66 (2): 498-504. doi:10.1021/acs.jafc.7b04860. PMID 29298067. Retrieved 2019.


  This article uses material from the Wikipedia page available here. It is released under the Creative Commons Attribution-Share-Alike License 3.0.

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