Developing Unique Bread Flavors and Aromas | Blog | BAKERpedia (2024)

Until recently, artisan bakeries have had the advantage of being more flexible in choosing their baking processes and ingredients to develop unique bread flavors. Now industrial bakeries can also have options if they pay attention to the fermentation steps.

There is a general misconception that flavor compounds generated during bread fermentation cannot contribute to the flavor profile of bread due to evaporation during baking.

However, yeast– and lactic acid bacteria-derived compounds greatly contribute to the generation of aroma precursors in thermal reactions during baking and the overall flavor profile of bread.

Flour contains many aroma precursors, which can be revealed through the natural enzymatic actions of yeast and bacteria. Therefore the flavors and aromas in bread will depend mainly on the type of flour used, and fermentation and baking techniques. When the same flour and recipe are used, then the choice of fermentative ingredient, i.e. the use of varying strains of yeast and bacteria, is also essential to produce breads with different flavor profiles. It is therefore possible to enhance and differentiate the aroma of your bread to obtain specific characteristics by choosing the right yeast and/or lactic acid bacteria combination.

Bread Flavors and Fermentation Metabolites

Through the action of the enzymes naturally occurring in the yeast, fermentation will generate carbon dioxide gas which will raise the dough. This fermentation process will also generate volatile organic compounds (e.g., higher alcohols, aldehydes, sulfur-containing com- pounds, esters, phenols, carbonyl compounds, organic acids) which may significantly affect bread sensory qualities. The volatile esters, aldehydes and secondary alcohols are the most significant flavor compounds produced during the dough fermentation by bakers yeast, are of particular interest in bread, because they contribute pleasant fruity and buttery flavor notes.

Sourdough naturally contains lactic acid bacteria and bakers yeast. Indeed studies of the microbiota obtained from many different sourdough revealed the presence of the lactic acid bacteria Lactobacillus sanfranciscensis, plantarum, and paralimentarius and of the yeast Saccharomyces cerevisiae. Working in synergy, those microorganisms seem to benefit from the presence of each other by secreting metabolites that stimulate their growth. Sourdough fermentation will also generate aromas and organic acids in unique concentrations leading to specific flavor profiles.

Developing Bread’s Full Flavor Potential

Usually an extended proof time is required for bread flavors to fully develop. The yeast and lactic acid enzymatic activity in the dough begins with kneading. This is therefore a key step in developing unique flavors in bread.
Bakeries with time limitations may add a pre-ferment step to obtain the benefits of a long fermentation, i.e. flavor development, but also proper gluten strength and longer shelf life. The pre-ferment is generally prepared several hours prior to the mixing of the final dough using a portion of the bread dough.

Depending on the water to flour ratio, this ‘’fermentation starter’’ can have a stiff to loose texture. A portion of the dough from a previous production, often referred to as ‘’old dough’’ may also be added to the final dough. Its flavor profile and intensity will depend on the quantity used (usually up to 25% flour weight of the new dough) but also on the degree of maturity of the dough (should be fermented for at least 3 hours).

Poolish fermentation involves the preparation of a pre-ferment composed of a liquid flour-water mixture in a ratio of around 1:1. The quantity of yeast will be added according to the time allowed for fermentation, hence less yeast will be added for longer fermentation and vice versa.

When talking about flavor development in sourdough bread, a long fermentation (12- 24h) time is required. The lactic acid bacteria fermentation will generate lactic and acetic acid in the dough that will contribute to the acidity in the bread. Other desirable volatile aromatic compounds generated during such a long fermentation process include:

  • Alcohols
  • Aldehydes
  • Ketones
  • Esters
  • Sulfur

Health and Wellbeing

As mentioned, consumers are concerned with health and avoiding artificial ingredients. Longer fermentation has a big impact on the development of flavor components, but it also confers health benefits like improving bread digestibility or improving the bioavailability of certain micronutrients.

Gluten from cereal constitute a good source of important bioactive compounds that can be released in bread by yeast and lactic acid bacteria. Opioid peptides generated from yeast have analgesic action on the central nervous system or induce prolactin secretion. Gluten exorphin A5 stimulates post-prandial insulin release. Short chain fatty acids generated by yeast fermentation can increase insulin sensitivity and satiety, have antimicrobial properties, and reduce proliferation of neoplastic gut epithelial cells.

Interesting peptides can be generated by the proteolytic activity of lactic acid bac- teria. Some of these may have various health properties:

  • Nutritional effects: mineral absorption and oxidative stress protection
  • Metabolic effects: blood glucose and cholesterol lowering
  • Cardiovascular effects: antithrombotic and hypotensive action
  • Immune effects: microbial inhibition and immunomodulation
  • Psychological effects: opioids and anti-opioids controlling mood and food intake.

Seeds fermented by yeast and bacteria can also contribute important bioactive compounds, notably γ -aminobutyric acid and natural phenolics, which possess versatile bioactivities such as antioxidant and anticancer effects.

Low FODMAPs Baking

The concept of low FODMAPs baking is slowly increasing in popularity.

The term FODMAPs refers to Fermentable Oligo- Di- Monosaccharides And Polyols, a group of carbohydrates of diverse complexity. These are non-starch oligosaccharides poorly absorbed in the small intestine and rapidly fermented in the large intestine.

Certain FODMAPs including fructan, galactooligosaccharide and mannitol are present in bread depending on the type of flour and fermentation processes used. Conventional bakers yeast and sourdough fermentation have the ability to decrease some FODMAPs while at the same time generating others.

  • Prolonged dough proofing times (>4 hours) with bakers yeast can reduce fructan levels of the final product by up to 50%. During sourdough fermentation, fructose is partially converted by lactobacilli to mannitol, another type of FODMAP.
  • Conventional bakers yeast and sourdough fermentation can also improve the bioavailability of certain nutrients present in bread. Yeast fermentation will generate B-complex vitamins. Compared to unfermented flour and water mixtures, there is 3 times more folate (vitamin B9) in fermented products.
  • Sourdough fermentation seems to degrade phytates, undesirable compounds that tend to complex with minerals, such as iron, zinc, calcium and magnesium, thereby limiting their absorption.

Marketing to Younger Generations

According to the 2019 nation- al research on consumer behavior presented by the American Bakers Association and the Center for Generational Kinetics, most Millennial (born between 1977 and 1995) and Gen Z (born after 1996) eat baked goods regularly. Indeed, almost 75% of younger consumers surveyed declared having purchased bread in the past few days.

Concerned about their environment and health, these two generations are looking for whole grains, and fresh-baked goods made from natural and responsibly sourced ingredients. As this demographic is becoming more health conscious, they pay attention to labels and nutrition cues. Millenials and Gen Z consumers read and look at health descriptors to help them find baked goods with the added benefits.

Creating an Experience

Taste also seems to be an important component in helping younger consumers make their bread choices. Open to new experiences, they love the opportunity to taste before buying in-store.

While the industry focuses on meeting consumer’s desire for nutritional and tasty baked goods, it should not neglect the emotions associated with ‘’bakery’’ when consumers top-of mind words include delicious, good, great, wonderful, aroma, memories and childhood.

Adapting formulations to these market trends, bakeries may need to try new ingredients and different baking processes. Bakers yeast and sourdoughs play a key role in the leavening of dough, but these natural ingredients can also provide bread with a unique taste, help with its digestibility and contribute to its nutritional qualities.

Developing Unique Bread Flavors and Aromas | Blog | BAKERpedia (2024)

FAQs

What ingredient gives bread its distinctive aroma and flavor? ›

Once reactivated, yeast begins feeding on the sugars in flour, and releases the carbon dioxide that makes bread rise (although at a much slower rate than baking powder or soda). Yeast also adds many of the distinctive flavors and aromas we associate with bread.

How to develop flavor in bread? ›

If you're looking to ramp up the taste of your favorite bread recipe, we recommend adding a bit of fat. A fat like butter, olive oil or coconut oil in small quantities will help your bread achieve a higher rise and it will also boost its flavor by tenfold.

What gives bread the unique smell when baking? ›

During the baking step, the caramelisation and what is called the Maillard Reaction, help to produce the characteristic smells. in France, and published in the Journal of Social Psychology, suggests that certain smells can trigger a more positive mood, which leads to a greater degree of altruism in strangers.

What gives Italian bread its distinctive flavor? ›

Italian bread tends to include olive oil, herbs, and milk that add to its distinctive taste and texture.

What causes richer flavor in bread? ›

FATS: The purpose in fats being in yeast breads is to make the breads more tender and rich tasting. Fat coats the gluten strands in the dough, this process slows down yeast fermentation. This makes the bread quality better, with better flavor that lasts longer.

What can I add to my bread for flavor? ›

'Any nuts, seeds, small or chopped dried fruits, olives, fresh thyme or rosemary can be added without changing the dough. For the best distribution, scatter the ingredients into the dough at the 'knocking back' stage. '

What ingredients are used to enhance appearance and Flavour of breads? ›

Ingredients used to enhance appearance and flavour of breads include cinnamon, nutmeg, egg wash and sugar/water wash.

What are the best herbs to add to bread? ›

Herbs like rosemary, thyme, parsley and oregano don't just add flavor to the bread. They also create a great herbal scent to your kitchen.

What makes bread smell yeasty? ›

After fermentation, the bread making process proceeds as usual. Longer fermentation gives bread stronger flavors. “A yeasty aroma and acidic flavors start to develop, adding more flavor to the finished bread,” Blakeslee said.

What is the chemistry of bread aroma? ›

Alcohols, aldehydes, 3-hydroxy-2-butanone (acetoin), and esters are the primary elements of aroma and are mainly created by yeast metabolism [57]. The most significant components of bread aroma are aldehydes with low odour threshold values, such as (E)-2-nonenal, nonanal, hexanal, heptanal, and octanal.

Why do bakeries smell so good? ›

Volatile Organic Compounds (VOCs) released during the baking process contribute to the distinct aroma of yeast. The primary VOC emitted is ethanol, which is produced as a byproduct of yeast fermentation. Other VOCs, such as aldehydes and organic acids, can also contribute to the smell.

How do you add aroma to bread? ›

Seeds such as flax, sesame, poppy, sunflower, or pumpkin can be added to dough or used on a bread's crust. There is no need to soak nuts, but toasting them at 325°F (until just beginning to change color but not begin to brown) for 5 to 7 minutes brings out the flavor.

How do you get a yeasty flavor in bread? ›

Allow the bread to rise in a draft-free 80°F to 90°F area away from a heat source. If the area is too warm, bread will rise too fast and begin cooking before the yeast has finished acting. This will impart a "yeasty" taste to the dough that will be transferred to the finished baked loaf.

Why does my homemade bread have no flavor? ›

Your bland bread could be the result of rushing the process. Try a slow overnight rise in the refrigerator. Plan ahead to proof your loaf overnight. This hands-off time in the icebox will slow the fermentation process in your dough and result in a complex-flavored loaf.

What ingredient is usually used in dough that gives better taste and flavor? ›

Sweeteners such as malt and honey are used to add flavor to bread dough. Malt, which is available in powder and liquid form, can be added to almost any bread. It's important to use a nondiastatic version, though, as diastatic malt has active enzymes, which, in excess, will make dough extremely sticky.

What is aroma in bread? ›

Overall, bread aroma is composed of almost 300 volatile compounds with specific odours (Nijssen et al., 1996; Pozo-Bayón et al., 2006a). These compounds belong to various chemical classes, such as aldehydes, ketones, esters, alcohols, pyrazines, furans and pyrroles.

What determines the taste of bread? ›

Longer fermentation gives bread stronger flavors. “A yeasty aroma and acidic flavors start to develop, adding more flavor to the finished bread,” Blakeslee said. Some bakers choose to do the extra step of making a sponge in order to add a slight sour and tangy flavor to the bread.

What ingredient contributes to the flavor texture and freshness of breads? ›

Salt. Salt may seem like a simple ingredient, but it's incredibly important in baking. Salt enhances the flavors of other ingredients and helps balance the sweetness. Salt also helps to control the yeast in bread dough and improves the structure and texture of baked goods.

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