In recent years, the salty snack market has undergone a significant evolution, with a growing interest in functional products enriched with health-promoting ingredients. According to Mintel’s 2024 research1, the “Better-for-you snacks” trend is driving innovation in the sector, with consumers increasingly attentive to the nutritional value of snacks and the presence of natural and functional ingredients. In this context, nutraceutical yeasts, such as those developed by Prosol, represent a key opportunity for snack manufacturers seeking innovative and healthy solutions.

Nutraceutical Yeasts in Functional Snacks

Inactive yeasts with high protein content and yeast extracts rich in nucleotides offer numerous benefits for the snack industry. Thanks to their nutritional profile and sensory properties, these ingredients can be used to enhance both the nutritional quality and taste of salty snacks.

1. High-Quality Protein with a Complete Amino Acid Profile

According to Mintel, 35% of global consumers seek snacks with higher protein content to support a healthy and active lifestyle¹. A major challenge in the development of high-protein plant-based snacks is achieving a complete amino acid profile, as many plant proteins lack certain essential amino acids, limiting their nutritional effectiveness. Prosol’s inactive yeasts and nutritional yeasts provide a rich protein source with a well-balanced amino acid composition, making them an excellent alternative or complement to traditional plant-based proteins such as pea or soy. This enables the creation of protein-rich snacks with superior nutritional value, catering to the increasing demand for plant-based and functional foods.

2. Immune Support and Health Benefits

The interest in functional snacks is rapidly growing, with a particular focus on ingredients that support the immune system. Yeast extracts rich in nucleotides, like those developed by Prosol, are known for their role in strengthening the body’s defences and improving gut health. Including these ingredients in salty snacks provides added value to health-conscious consumers.

3. Natural Umami and Sodium Reduction

Another crucial aspect for snack manufacturers is optimizing flavours without relying on artificial enhancers. Mintel research highlights that 42% of consumers desire snacks with intense flavours but less sodium¹. Yeast extracts, thanks to their high nucleotide content, offer a natural alternative to monosodium glutamate (MSG) and enhance the umami profile of snacks such as chips, popcorn, and seasoned nut mixes.

The possibilities for using nutraceutical yeasts in salty snacks are numerous:

Protein crackers and breadsticks: enriched with autolyzed yeasts for balanced protein intake.

Gourmet popcorn: with yeast extracts for a natural umami taste without artificial additives.

Plant-based protein chips: featuring proteins from autolyzed yeasts for greater satiety.

Legume-based snacks: enhanced with nucleotides for a richer and more balanced flavor.

Integrating nutraceutical yeasts into snacks offers a concrete response to modern consumer demands for tasty, natural, and functionally beneficial products. Thanks to inactive yeasts and yeasts extracts rich in nucleotides, manufacturers can develop innovative snacks that align with global trends in health, wellness, and sustainability. With the market continuously evolving, the ingredients developed by Prosol provide a competitive advantage for those looking to differentiate themselves and meet new consumer expectations.

¹ Mintel, A Year of Innovation in the Salty Snacks and Fruit Mixes Market 2024

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In recent years, yeast extracts have been gaining popularity in the food industry due to their ability to modulate taste, enrich nutritional value and improve the flavour of foods. They represent a versatile and sustainable solution for various culinary and nutritional applications, responding to the needs of increasingly health-conscious and quality-conscious consumers. Safe and nutritious ingredients are now considered a high quality natural product, capable of satisfying various taste requirements and providing essential dietary nutrients [1,2], attracting increasing attention due to their low cost of production, wide range of available sources and high content of vitamins, proteins and minerals that are increasingly in demand. In addition to the variety of physiologically valuable substances, their high antioxidant capacity is extremely useful for the food industry [3].

Brewer’s yeast (Saccharomyces cerevisiae) is the most commonly used source for the production of yeast extracts [4]: the cell wall of brewer’s yeast contains a high percentage (15-30% of the cell’s dry mass) of cross-linked polysaccharides, mainly mannose-oligosaccharides and β-glucans [5,6]. The β-glucan product obtained from brewer’s yeast has antibacterial, antioxidant and various other biological activities, making it not only a food additive and dietary supplement to promote digestion, but also an agent that boosts human immunity and reduces lipids in the liver and blood.

As production technology has improved, the applications of yeast extract have expanded from animal feed to amino acid and protein products for human consumption, immunostimulants for aquaculture, flavouring agents for meat [7], spice additives, plant growth regulation and soil improvement (Fig. 1) [8].

One of the most appreciated roles of yeast extracts is their ability to enhance the umami flavour, also known as the fifth taste, which gives food a ‘succulent’ and ‘meaty’ note that enhances the complexity of the food. This is made possible by glutamate, an amino acid naturally present in yeast extracts that acts in synergy with free nucleotides such as inosinate and guanylate to intensify the perception of umami flavour. Especially popular in soups, sauces, broths, ready meals and savoury snacks, it offers a natural alternative to monosodium glutamate (MSG), which is often avoided by consumers for health reasons. In addition, the use of yeast extracts reduces the amount of salt required in food preparations, contributing to healthier formulations and responding to the growing focus on reducing sodium in the diet.

In addition to enhancing taste, yeast extracts are rich in essential nutrients, making them ideal for food supplements. They contain B vitamins, protein, essential amino acids and minerals such as zinc, iron and magnesium. These are crucial for several bodily functions, including energy metabolism, the nervous system and red blood cell production, making yeast extracts an excellent option for those seeking to enrich their diet with natural, nutritionally dense supplements.

Recently, research into antioxidant properties has also extended to the cosmetics industry; yeast extract is usually combined with other cosmetic ingredients to formulate sunscreen, moisturising and exfoliating products that protect the skin from oxidative stress. Just for comparison, the antioxidant capacity of yeast extract is ten times that of blueberries [9].

Another advantage of yeast extracts is their ability to modulate bitter taste: thanks to their nucleotide and peptide content, they can mask the bitter and unpleasant notes typical of alternative protein-based foods, without altering the flavour profile. Yeast extracts consist of a combination of proteins, peptides, amino acids, nucleic acids, B vitamins, minerals, carbohydrates, lipids and other components. However, the chemical composition of each extract depends on the conditions during yeast culture and extract preparation (Tomé, 2021, Vieira et al., 2016). Glutamic acid and two purine nucleotides (guanosine 5′-monophosphate (GMP) and inosine 5′-monophosphate (IMP)) identified in yeast extracts are known for their ability to enhance and elicit an umami taste (Laffitte et al., 2016, Yamaguchi, 1991). They also contain adenosine 5′-monophosphate (AMP) (Vieira, Brandão, & Ferreira, 2013), identified as a bitter taste inhibitor (Keast and Breslin, 2002, Ming et al., 1999).

Studies such as the one performed by Keast and Breslin in 2002 suggest that AMP inhibited the bitterness of a pharmaceutical mixture (pseudoephedrine, ranitidine, acetaminophen, quinine and urea) but only reduced the perception of the bitter taste of pseudoephedrine and quinine (Keast & Breslin, 2002).

AMP therefore has an ability to inhibit bitter taste perception, which is particularly useful in sports drinks and snacks, where it is important to balance the taste to make the product more pleasant and balanced.
The ability to modulate bitter taste, which in some respects is still poorly understood, makes yeast extracts a key ingredient in the development of novel food products that satisfy consumer preferences.

Prosol yeast extracts represent a highly valuable multifunctional ingredient for the modern industry, meeting the needs of numerous sectors, from food to supplements to cosmeceuticals. Not only do they improve the taste and flavour of products, naturally enhancing the umami flavour, they also play a crucial role as modulators of bitterness, making formulations more balanced and palatable. This property is particularly useful for masking unwanted notes in complex products such as food supplements and functional preparations.
In addition to their taste benefits, Prosol yeast extracts offer important nutritional enrichment due to their high content of protein, fibre and essential micronutrients. This makes them ideal for the development of food supplements aimed at improving overall well-being, responding to growing consumer demands for more natural and healthy solutions.
In a context of increasing focus on sustainability and health, these extracts also stand out for their versatility and eco-friendly profile, representing a strategic option not only for the food sector, but also for the production of cosmeceuticals. Their nourishing and regenerative properties make them perfect for beauty and skin care formulations, contributing to innovative, high-quality products.

1. Boonraeng S, Foo-Trakul P, Kanlayakrit WJKJ. 2000. Effects of chemical, biochemical and physical treatments on the kinetics and on the role of some endogenous enzymes action of baker’s yeast lysis for food-grade yeast extract production. Kasetsart J. 34: 270-278.
2. Podpora B, Swiderski FJJoFP, Technology. 2018. Spent brewer’s yeast autolysates as a new and valuable component of functional food and dietary supplements. J. Food Process Technol. 6: 1000526.
3. Jacob FF, Striegel L, Rychlik M, Hutzler M, Methner F-J. 2019. Yeast extract production using spent yeast from beer manufacture: influence of industrially applicable disruption methods on selected substance groups with biotechnological relevance. Eur. Food Res. Technol. 245: 1169-82.
4. Takalloo Z, Nikkhah M, Nemati R, Jalilian N, Sajedi RH. 2020. Autolysis, plasmolysis and enzymatic hydrolysis of baker’s yeast (Saccharomyces cerevisiae): a comparative study. World J. Microbiol. Biotechnol. 36: 68. 164 Tao et al. J. Microbiol. Biotechnol.
5. Jouany JP, Yiannikouris A, Bertin G. 2004. The chemical bonds between mycotoxins and cell wall components of Saccharomyces cerevisiae have been identified. J. Food Protect. 8: 26-50.
6. Khawaja, Muhammad, Bashir, Jae-Suk, Choi. 2017. Clinical and physiological perspectives of β-glucans: the past, present, and future. Int. J. Mol. Sci. 18: 1906.
7. Rakowska R, Sadowska A, Dybkowska E, Świderski F. 2017. Spent yeast as natural source of functional food additives. Roczniki Państwowego Zakadu Higieny 68: 115-121.
8. Xi Q, Lai W, Cui Y, Wu H, Zhao T. 2019. Effect of yeast extract on seedling growth promotion and soil Improvement in afforestation in a semiarid chestnut soil area. Forests 10: 76.
9. Gaspar LR, Camargo FB, Gianeti MD, Maia Campos PMBG. 2008. Evaluation of dermatological effects of cosmetic formulations containing Saccharomyces cerevisiae extract and vitamins. Food Chem. Toxicol. 46: 3493-500.

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