Flour Emulsifier: How to Work Better Wheat Flour

Flour is one of the most important ingredients of almost all food. Among the most important products made from flour are bread, cakes, pasta, biscuits, and noodles. It is true that flour is made up of proteins, with some starch and lipids, and can support the development of dough and the performance of baking, but still, the flour does not always provide the softness, volume, shelf-life and consistency the food industry and consumers are looking for. It is at this point that flour emulsifiers come into play.

Emulsifiers are food additives with both hydrophilic and lipophilic ends. They are able to diffuse and stabilize oil-in-water emulsions and water-in-oil emulsions. In adding flour emulsifiers improve the ease of handling dough, volume of the baked loaf, softness of the crumb and freshness while improving the shelf life of the products.

Dough backbone is made up of gluten, which is generated from the hydration and intermingling of wheat proteins gliadin and glutenin. Emulsifiers, and SSL in particular, work with gluten proteins to improve gluten network elasticity, which is better termed as stronger and stretcher, increase cross-linking of glutenin which in turn helps make the dough more stable, and resist the dough from collapsing during the proofing and baking stages.

Example: In bread dough, DATEM attaches to hydrophobic sites of gluten proteins and strengthens the structure to allow the dough to trap more CO2, which increases the volume of the loaf.

Dough is subjected to mechanical stress during the mixing stage, which can be detrimental in the case of weak dough, as the dough can become sticky, tear, or lose the ability to retain gas. Emulsifiers act as dough conditioners by improving the tolerance to overmixing, which is helpful in high speed industrial bakeries, reducing the amount of energy used in mixers and dividers by making the dough less sticky, and decreasing the amount of dough tearing.

Example: SSL’s effectiveness in long fermentation tolerance as well as high-speed processing is invaluable in large bakeries.

Gas retention during fermentation is vital. volume is lost when gas bubbles escape. Emulsifiers help by:

• Stabilizing the air–water–protein boundaries within the dough.
• Forming stronger gluten membranes around the gas bubbles.
• Minimizing bubble coalescence, resulting in a uniformly fine crumb.

In the case of sandwich bread, emulsifiers aid in the formation of a soft slice with uniform structure by eliminating large, uneven holes.

Wheat flour contains two proteins known as gliadin and glutenin, which form a gluten network crucial for retention of gas and dough elasticity. Nonetheless, the type of wheat used and the way the flour is processed determines the quality of the gluten.

DATEM (Diacetyl Tartaric Acid Esters of Mono and Diglycerides) is one of the emulsifiers which works particularly well with gluten proteins.

DATEM has a hydrophilic and lipophilic end which enables it to attach to hydrophobic sites on glutenin molecules.

Attachment in this way aligns and reinforces gluten strands resulting in:

• Increased dough elasticity.
• Enhanced retention of CO₂ gas in the gluten matrix.
• Increased tolerance during mixing and fermentation.

Emulsifiers during breadmaking, especially mono and diglycerides,, associated with stabilizers, make up 3 portions of starch, along with the heated bonds and the heated bonds. bread remains soft and moist for longer, avoids the base resting directly on the tray for up to 5 to 7 servings.

Emulsifiers are shown to stave off bread staling where the structure of the loaf remains intact. Packs of sandwich bread lose moisture within 2 to 3 days while shelves remain untouched, demonstrating the effectiveness of these emulsifiers.

Brioche, for instance, will collapse and form greasy spots where emulsifiers break the baked form of the loaf. With the aid of an emulsifier, smooth and soft borders that are off-white form,

Folded into each layer are millions of globules of air that emulsifiers work to separate and fill with. Branched with chains of protein within the batters, alongside uniform texture and structure, starch retrogradation improves to elongate the life of the bake.

The amount of flour with a concentration of 1 to 2 percent, along with oil that froths during whipping, when gently cooled, are steps shown to gently break and collapse the structure of a simple, stable network. With the stable protein matrix formed, the protein layer separated the protein matrix.

This stabilizing bridging layer has five portions and within these borders, the globules of air, along with a cage-like network of stabilizing rods formed, rising through the emollient, are.

This layer of retained moisture stabilizes the air bubbles in the loaf. With these structures, an airy slices loaf baked will remain, losing moisture along the borders but containing the airs within the folds, breath.

Emulsifiers have many roles, but they play most critical roles on air–water–oil interfacial emulsions in dough.

During mixing and fermentation of dough, millions of tiny gas bubbles with different diameters.

Emulsifiers reside at the gas–liquid surface membranes of the bubbles, stabilizing them.

As a result of stabilizing the bubbles, the dough is able to achieve:

• Finer crumb structure.
• Stabilized gas retention during dough proofing.
• Enhanced oven spring and loaf volume.
• In addition, the dough able to:
• Form retrograded amylose complexes.
• Lose moisture, hence retarding crumb.
• Retain softness for several extra days.

Soft crumb is especially important in bread, cakes and buns. Emulsifiers help with this:

• Increased air incorporation and distribution in batter/dough.
• Restricted retard starch recrystallization (and hence, moist crumb).
• Tenderized mouthfeel due to less rigidified gluten.

Emulsifiers help achieve the targeted quality of the bread in packages, so soft and light with a fine, even crumb. These target features help achieve higher consumer approval:

• They minimize the size gas bubbles in the bread and create smaller, uniform gas cells.
• To increase cracker crispness, a balance in the extensibility of the dough is required.
• Decrease the brittle tendency in pasta, noodles and other uncooked noodles.

Lecithin is a natural emulsifier used in food processing, including in flours and bakery products. It is a hydrophilic and lipophilic phospholipid (a fat-like compound) with dual nature. Such nature enables its functioning as a transformer that connects fat with water, forming stable emulsions.

• Soybeans (most common)
• Sunflower seeds (increasingly popular owing to non-GMO and no allergens)
• Rapeseed (canola)
• Egg yolks (used the most in the past, but out of fashion for large scale baking)

Lecithin aids the even distribution of fats in dough or batter. This aids in achieving a balanced structure, reduces greasiness, and improves the aeration of cakes and breads.

Lecithin increases the stretch ability of dough while decreasing the level of stickiness. This increases the machinability, thus providing ease in large scale baking as well as hand-kneading for artisan bakers.

The complication of starches with lecithin diminishes the rate of starch retrogradation (the process responsible for bread staling) and thus contributes to the prolongation of bread softness.

During fermentation, lecithin promotes the stabilization of air cells within the dough. This mechanism creates a finer crumb structure and enhances the volume of the loaf.

It is quite helpful that lecithin reduces dough stickiness, thus eliminating the problem of adhesion to bakery equipment (rolls, pans, and mixers).

• Enhances dough handling and machinability.
• Increases volume along with softness of the crumb.
• Freshness is also retained for a longer period.

• Emulsified batters become more stable.
• Cakes become more aerated and fluffy.
• Separation of fats is also prevented.

• Dispersed fats are uniformly distributed, thus achieving even texture.
• Improved spread of dough reduces cracking.

• Doughs become laminated, thus improving the separation of layers.
• Increased flakiness and volume is also achieved.

• In the absence of gluten, structural support is given.
• Addition of gluten-free breads improves texture and elasticity.
• Lecithin in baking has certain benefits like having a natural source, which is often preferred in clean-label products.
• Lecithin’s versatility also works in baking bread, cakes, cookies, and pastries.
• Its economical nature requires low dosage for optimal results (0.3–0.5% of flour weight is typical).
• Enhances nutrition profile – contains beneficial phospholipids and choline

Emulsifiers of mono- and diglycerides of fatty acids (E471) are food-grade and are derived from emulsifying fats and oils of natural origins, be it animal or vegetable. This is the case when glycerol is bonded to fatty acids and thus, mono- and diglycerides are formed, which consist of molecules containing:

• Hydrophilic (or “water-loving”) and
• Lipophilic (or “fat-loving”) portions.
• The improved handling of dough, emulsion of fats and water, and stabilization of flour based foods are due to the dual nature of these compounds.

• Improves the elasticity and pliability of the dough and dough mechanics during industrial baking.
• Strengthens the structure of the dough by interacting with gluten proteins.

• The uniform and fine crumb texture of cakes and bread is achieved by the stabilization of air bubbles during fermentation.

• Retention of bread softness comes from the complex with the amylose (starch) and the lessening of starch retro gradation.
• The staling of soft bread is prolonged.

• The uniform dispersion of fats in batters and dough is achieved.
• Product separation from the oils is prevented, thus providing reliable product quality.

• The reduction in the dough’s stickiness decreases the adhesion of the dough to bakery equipment and improves the handling of the dough.

• The volume and softness of the loaf are improved.
• The freshness of bread is maintained by reducing the staling.

• Facilitates aeration of batter.
• Provides a moist and fluffy texture.
• In emulsified high-fat dispersions, prevents separation of the fat.

• Ensures consistent structure through uniform fat distribution.
• Enhances dough stability and reduces surface rupture.

• Aids in the stabilization of fat layers during lamination.
• Adds to the flakiness and volume.

• Balances the absence of gluten-supported structure.
• Increases the elasticity, volume, and softness of the dough.

• Flexibility of Use: Effective in bread, cake, cookies, and pastries.
• Low-Use Levels: Effective at 0.3–0.5% of the flour weight.
• Doesn’t Alter Taste: Flavor neutral.
• Shelf-Life Improvements: Extends freshness by retarding staling.

Diacetyl Tartaric Acid Esters o f Mono- and Diglycerides also known as DATEM, is an emulsifier and food additive which is used mainly as an emulsifier and dough conditioner in bakery and other processed foods.

• Its chemical composition refers to DATEM as a product of the reaction between diacetyl tartaric acid and mono- and diglycerides (fats from edible oils).
• Its state is typically found in powdered form which is cream to light brown or a waxy solid.

DATEM is formed through esterification by reacting mono- and diglycerides of fatty acids (E471) with:

• The Fruit of the Vine and Tartaric Acid
• The Vinegar of Acetic Acid

This results in the formation of a molecule with a lipophilic and a hydrophilic part, giving the molecule the ability to effectively bind with proteins (gluten) and gas cells in dough structure to stabilize it.

DATEM is one of the most powerful flour emulsifiers and interacts with gluten proteins selectively. The core functions are:

• Strengthening of Dough
• Retention of Gas and Increase in Volume
• Improved Machinability of Dough
• Improved Softness of Crumb and Longer Shelf Life
• Uniform Pore Distribution and Stabilization of Air Cells

Dough’s with DATEM have a greater elasticity and tolerance, which is ideal for mechanized bread-making, leading to readily strengthened gluten. The extensive gluten network also captures more carbon dioxide, leading to a larger loaf volume and a finer crumb structure. The more intense the mechanical mixing and stress to the dough, the more it is tolerated, which is necessary in high-speed industrial bakeries. The recruited starchy molecules to the gas lattice soften the bread over a prolonged period, which is kept in a safe and refreshing environment. The pore distribution is kept uniform, whilst the gas bubbles are kept un-collapsed during the proofing and baking.

• In sandwich loaves, burger buns, baguettes, and even artisan breads.
• Loaf volume increase, crumb softness improvement, and freshness retention.

• Rise improvement and flakiness enhancement.

• Dough texture improvement and elasticity enhancement.

• Faux gluten mimicked elasticity and volume.

Food emulsifier, sodium stearoyl lactylate, SSL and calcium stearoyl lactylate, CSL are formed by combining lactic acid with sodium or calcium salts and stearic acid (a fatty acid derived from oil, plants, and animal fats).

The emulsifiers in question are both dispersible in fats and water and come in a range of colors from white to light yellow. Both are anionic emulsifiers – their subclass of emulsifiers carries a negative charge to assist in bonding with starch and gluten.

Both SSL and CSL are classified emulsifiers and dough strengtheners, but with different emphasis on certain parameters.

• They weaken dough elasticity and bind to gluten proteins to promote better mechanisms of alignment.
• During fermentation, the gluten network is stronger, resulting in better gas retention.
• The result is a higher volume loaf with better shape stability.

• Dough is made more tolerant to mechanical stress during mixing.
• The resulting dough is smoother, less sticky, and more manageable in scale in industrial bakeries.

• They also slow the rate of staling (retro gradation) of bread resulting from interaction with starch – amylose and amylopectin.
• This is the reason why more modern breads are kept softer for longer.

• Aid in the proper mixing of fats/oils in the dough.
• Enhancement of the texture, moisture, and the even distribution of milk powder/sugar.

They are functional food additives that alter the pH of dough and flour systems, and thus, indirectly assist the emulsifiers or gluten and starch modifiers during baking.

Food acids are added to provide or enhance the sour taste, lower pH, and control microbial activity.

• Citric acid
• Tartaric acid
• Lactic acid
• Acetic acid (vinegar)
• Malic acid

• Dough conditioning – acids improve the elasticity of the dough by tightening the gluten, which aids in the elasticity of the dough.
• Flavor development – helps add notes of sourness, tangy, or sourdough flavor.
• Yeast regulation – the balance in the acidity helps to control the activity of the yeast.
• Synergy with emulsifiers – acids (like tartaric acid in DATEM) are part of the chemistry that helps emulsifiers work.

These are substances that control or alter the dough pH, preventing it from becoming too acidic or too alkaline.

• Sodium bicarbonate (baking soda)
• Ammonium bicarbonate
• Potassium carbonate
• Calcium carbonate
• Sodium citrate

• pH stabilization – keeps dough at an ideal pH (~5–6) for performance for gluten and enzyme activity.
• Interaction with leavening agents – regulate CO₂ release in chemical leavening systems (cakes, biscuits).
• Emulsifier performance – right pH improves emulsifier interaction with gluten and starch.
• Crumb color and texture – alkaline regulators can give a darker crust (like in pretzels, where lye or sodium carbonate is used).

For the purpose of classification in food technology, flour is an emulsifier. Emulsifiers are substances which allow the binding of two immiscible liquids, like oil and water, into a stable and homogenous associate. Emulsifiers occupy the structural, thickening, and bulking roles, and hence are often saponifiable substituents. While it has the capacity of binding water and increasing quantity and viscosity, it has no capacity of lowering surface tension between immiscible oil and water. However, emulsified portions of dressings and batters made of oil and water wherein flour is added seem to be cohesive because of the flour, but the true emulsification is performed by eggs, lecithin and other emulsifiers.

Most of the time baking will be done with the emulsifier lecithin, which is easily available in emulsifying plants such as the yolk of eggs and beans of soy. Lecithin permits the continuous interfacing of oil with water, and thus increases the stability of the dough and improves the texture by increasing the moisture retention. In the case of bread, cake and cookies, there is an improvement in volume, a finer crumb structure and in addition, the staling has a prolonged effect which in turn increases the shelf life.

Mono-di-glycerides, polysorbates, DATEM which are upon addition, strengthen the gluten and improve the retention of gas and other emulsifiers also aid in baking. Lecithin remains the most popular choice for both home and professional baking because it is a natural product.

Emulsifying lecithin is most often present in egg yolk and soybeans. It promotes stable dispersion of oil in water and water in oil, yielding a homogeneous blend. Further emulsifiers used in food systems are mono- and diglycerides, mustard, and polysorbates, which facilitate dispersion in sauces, bakery products, and other foods.