Difference between unbleached flour and all purpose flour

Bleached flour is all-purpose or plain flour that has been chemically bleached to improve its consistency and baking properties. Unbleached flour is flour that has been aged naturally. Unbleached flour is a better source of vitamin E but bleached flour has a finer grain allowing it to make lighter loafs. Bleaching also makes the flour whiter.

Comparison chart

Bleached Flour versus Unbleached Flour comparison chart
Difference between unbleached flour and all purpose flour
Bleached FlourUnbleached Flour
ColorWhite Less white / yellowish
Bleached usingBleaching chemicals such as organic peroxides, nitrogen dioxide, chlorine, chlorine dioxide, or azodicarbonmide Aged naturally
QualityFiner grain, making a lighter loaf Tougher grain, making a denser loaf
NutritionLess vitamin E. Rest of the nutrition i.e. calories, fats, fiber, proteins, calcium and iron are about the same. More vitamin E. Rest of the nutrition i.e. calories, fats, fiber, proteins, calcium and iron are about the same.

Bleaching

Bleached flour is bleached using chemicals such as organic peroxides, nitrogen dioxide, chlorine, chlorine dioxide, and azodicarbonamide. The use of chlorine, bromates and peroxides is not permitted in the EU.

Unbleached flour is aged naturally, as flour becomes bleached over time. However, it never reaches the same consistency as bleached flour.

Quality

Bleached flour appears whiter and has finer grains, allowing it to make more flexible dough and lighter loaves. It has less vitamin E than unbleached flour. People with sensitive palettes can sometimes taste a slightly bitter aftertaste.

Unbleached flour has a yellowish tint and produces denser loafs. It has more vitamin E than bleached flour.

Nutrition

Comparing 1 cup of bleached flour vs unbleached flour, Vitamin E is higher in unbleached flour. Rest of the nutritional value is the same in both.

  • Vitamin E: Unbleached Flour contains 0.3mg of Vitamin E, whereas bleached flour contains 0.1mg.
  • Calories: Both contain the same amount of calories, approx. 455/cup
  • Fat: Both contain 1g of fat in both.
  • Sodium: Both contain 2mg of sodium.
  • Carbohydrates: Both contain 95g of carbohydrate.
  • Fiber: Both contain 3g of fiber.
  • Protein: Both contain 13g of protein.
  • Calcium: Both contain 2% of the daily recommended amount of calcium.
  • Iron: Both contain 32% of the daily recommended amount of iron.
  • Trans Fat: Both contain 1% of the daily value of trans fat.

Uses

Bleached flour is best used for pie crusts, cookies, quick breads like muffins, pancakes, and waffles.

Unbleached flour is used for yeast breads, Danish pastries, puff pastries, strudel, Yorkshire pudding, éclairs, cream puffs, and popovers.

References

  • http://en.wikipedia.org/wiki/Flour_bleaching_agent
  • http://www.prosphora.org/page8.html
  • http://foodlorists.blogspot.co.uk/2007/11/what-means-bleached-flour.html
  • http://whatscookingamerica.net/Bread/FlourTypes.htm
  • http://nutritiondata.self.com/facts/cereal-grains-and-pasta/5828/2
  • http://nutritiondata.self.com/facts/cereal-grains-and-pasta/5745/2

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"Bleached vs Unbleached Flour." Diffen.com. Diffen LLC, n.d. Web. 25 Oct 2022. < >

You’ve passed over one or the other every time you go grocery shopping, but do you know what the differences are between bleached and unbleached flour? They bake differently, they look different, and to some, they even taste different.

Which one you use in your kitchen might play a subtle role in the way your breads rise, and even the nutritional content of the flour you use. If you’re ready to settle the score once and for all and know which flour is best for your kitchen, here are the facts.

Why and How Is Flour Bleached?

After flour is milled, it’s generally a nice off-white color. While this doesn’t bother some, many consumers prefer a pretty, pure white flour, so companies begin a chemical bleaching process to refine the flour further.

Benzoyl peroxide and chlorine gas, to name a few, are used to bleach the flour, refining the texture to a lighter flour, and removing the natural yellowish tone. The result is an ultra-white, ultra-fine flour that can rise faster in breads, and maintain a sharper color in baked goods.

On the other hand, unbleached flour is still naturally bleached, simply because it is exposed to oxygen. When the flour is exposed to the air, it naturally whitens to a certain extent, though this does not affect the texture of the flour.

Why Is Bleached Flour Not Ideal?

Difference between unbleached flour and all purpose flour

While we’re all for fast-rising breads and vibrant rainbow cupcakes around here, we’re not terribly crazy about bleached flour, for a couple of reasons:

  1. Bleached flour is less nutritious.

During the bleaching process, a chemical breakdown occurs which diminishes the amount of nutrients in the flour — particularly vitamin E. As a result, these nutrients typically have to be added back in.

  1. Bleached flour sometimes has a bitter taste.

Though it’s very subtle, those with a sensitive sense of taste may notice a distinct bitter aftertaste in bleached flour.

  1. Chemicals are used to bleach the flour.

There are about 20 different chemicals used by companies to bleach flour, though only a few may be used at a time. Most are considered safe and food-grade, but many question the safety of long term consumption to foods that have been treated with chlorine. These preservatives remain in the flour after the bleaching process, and inevitably, in whatever you bake with it.

Does Unbleached Flour Make a Difference in Baking?

Difference between unbleached flour and all purpose flour

The short answer is, not a big one. Unbleached flour is naturally aged, so it’s ever so slightly more coarse than bleached flour. However, there’s none of the bitter aftertaste of bleached flour, and the slightly coarser grain of the flour means that baked goods just hold their shape a little better.

Though unbleached flour is slightly beige and a bit more coarse than bleached flour, it’s still perfectly easy to color for fun baked goods, and rises very well for yeast breads. Though many consider bleached flour ideal for cakes and pie crusts and quick breads, the reality is that the differences in how these flours bake are quite subtle — the greatest difference is in how they’re made and what’s in them.

Go With Your Gut

Difference between unbleached flour and all purpose flour

Bleached flour is not necessarily unsafe, but the process of making it requires more chemical involvement, and ultimately, you know less about what’s in your food. Here at Wheat Montana, we think that sometimes the simplest things are best, which is why we age all of our flours naturally, from our all-purpose to our whole wheat flours.

Unbleached flour is ground wheat, milled into its simplest form for baking, just the way nature intended it. Don’t believe us? Have a slice of our bread, or stop in one of our restaurants for a homemade cinnamon roll, and you’ll see that wholesome, unbleached flour, bakes just fine.

Can I substitute unbleached flour for all purpose flour?

Can You Substitute Unbleached Flour for Bleached Flour? Bleached flour and unbleached flour can be used interchangeably in recipes. However, baked goods made with bleached flour contain proteins that have been altered, which helps in forming gluten bonds when baking.

Is unbleached flour better than all purpose flour?

Unbleached flour also takes longer than bleached flour to produce, and because of this, it's usually more expensive. Having a denser texture, unbleached flour provides more structure in baked goods, which makes it an ideal base for things like yeast breads, cream puffs, eclairs, and pastries.

What is the difference between regular flour and unbleached flour?

It has a slightly darker color than bleached flour and has a texture that is a bit more dense. Because it takes more time to age the flour naturally, it is usually more expensive than bleached flour. Bleaching flour the natural way also preserves more of the nutrients found in wheat.

Which flour is healthier bleached or unbleached?

However, bleached flour does go through a chemical process that its counterpart does not, making unbleached flour a little safer to consume. Although unbleached flour doesn't go through an intense chemical process to whiten the powder and ultimately destroy key nutrients, it isn't as healthy as many people may think.