A true game-changer for the protein market

Lynside® ProteYn, the alternative source of complete protein from yeast,
provides all the benefits of animal and plant proteins, without their drawbacks.




Lynside proteyn

Nutrient content of
Lynside® ProteYn55 (g/100g)

Proteyn 70

Nutrient content of
Lynside® ProteYn70 (g/100g)

Not only do our Lynside® ProteYn ingredients provide a good protein intake but they also contain other nutrients. Unlike many plant-based protein sources, Lynside® ProteYn supplies a range of wholesome components including naturally-occurring fibers, B-vitamins and minerals such as iron, zinc, calcium, magnesium, phosphorus and potassium.


Protein is crucial to any diet. However, not all protein sources are able to provide all of the essential amino acids that the body needs to function properly.

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Proteyn amino acid

Lynside® ProteYn is an innovative ingredient,

suitable for a variety of dietary lifestyles

Proteyn vegan diet

• Lynside® ProteYn ingredients have a good content in BCAA: Leucine, Isoleucine and Valine. It may help to maintain muscle mass in subjects following a vegetarian diet who are at risk to have a lower quantity and quality protein intake.1

• Lynside® ProteYn has also a good content in micronutrients. Their consumption for subjects undergoing vegetarian diet may help to reduce the risk of nutrient deficiencies such as vitamin B12, iron, zinc, calcium…17

• The protein content of Lynside® ProteYn may be a powerful weight management tool for people under weight loss regimen, by promoting satiety during a meal.18,19,20

• The Lynside® ProteYn ingredients contain BCAA which may:
– Help to maintain muscle mass during weight loss.1,21
– Help to maintain blood glucose homeostasis.19

• Many amino acids are involved in fat mass decrease. Lynside® ProteYn has a particularly good amount of Leucine and Lysine which may play a role as fat burner.22,8,9

• Lynside® ProteYn yeasts have very good amount of aromatic amino acids which may improve well-being of subjects under weight loss regimen.16

healthy diet

• The Lynside® ProteYn ingredients contain BCAA which may:
– Stimulate muscle protein synthesis while inhibiting proteolysis resulting in muscle gain. 1,21
– Help to slow down serotonin level and thus fatigue sensation during and after endurance exercise.7

• In case of prolonged strenuous exercise, low L-glutamine level is associated with impaired immune function. It has been suggested that by supplementing diet with amino acids such as BCAA, it helps preventing glutamine concentration decrease. Lynside® ProteYn contains BCAA that may be interesting for boosting immune system functions.23,24

• Consuming Lynside® ProteYn, a source of protein with an excellent aromatic amino acid content, may improve memory and mood in active adults.16

Healthy Aging Diet proteyn

• Lynside® ProteYn contains BCAA which may maintain skeletal muscle mass in ageing population at risk of Sarcopenia.25

• Lynside® ProteYn is a source of complete proteins with all EAA that are required for boosting immune system in elderly.26

• Moreover Lynside® ProteYn has a good content in Lysine, an essential amino acid that has been deeply studied for its beneficial effects on health, that may benefit the elderly: anxiety and stress reduction10, hair loss prevention11,12, osteoporosis prevention13,15, and thanks to carnitine, its derivative, antioxidative activity27, and mitochondrial function restoration28,29.

• Supplementing food with aromatic amino acids, thanks to Lynside® ProteYn, may improve mood and working memory in older adults, by regulating the catecholamines synthesis16

Higher digestibility

Lynside® ProteYn has Protein Digestibility–Corrected Amino Acid Score (PDCAAS*) of 1, same as dairy proteins and much higher than all plant-based proteins.

This means that you will be consuming a high quality, complete protein with excellent digestibility.

Higher digestibility Proteyn

Data from «Protéines végétales», B.Godon, 1996 and FAO/WHO Expert Consultation 1990
*PDCAAS: assessment method to determine the quality of a protein by taking into account their content in essential amino acids as well as the body’s capacity to assimilate them during the digestion process (PDCAAS = limiting AAS (Amino Acid Score) * True fecal protein digestibility)

Enjoy your diet

One of the safest ingredients, suitable for all diets

gmo free

*Compounds that perturb the normal absorption of nutrients by a strong binding with them (ex: phytic acid, protease inhibitor)

Regulatory & Intellectual property requirements vary by country and applications (including claims). We encourage our customers to consult their legal department or counsel before launching the product on the market.

Proteyn eco friendly

A low environmental impact, thanks to a very specific
and perfectly mastered manufacturing process

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Lynside® ProteYn’s production generates significantly lower amounts of greenhouse gas than beef production and similar levels as soy production.*
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Lynside® ProteYn’s production is exceptionally efficient when it comes to water consumption, requiring less water than for beef or soy production.*
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Yeast is a microorganism that multiplies very quickly, therefore Lynside® ProteYn production is a very short process compared to plants or animals that need a much longer time to grow and fully develop.*

What we eat matters!
Not only does our diet influence our overall wellbeing
but it also impacts the environment and the resources available.

Reliable production

stable supply

Stable supply

Not subject to weather conditions like plants

stable pricing

Stable pricing

Not subject to price fluctuations like milk proteins

Tips & Tricks

Lynside ProteYn


an exciting way to add protein to your diet !

Here are a few examples of applications in which the addition of Lynside® ProteYn could enhance your daily protein intake !

Lynside ProteYn is a good source of protein and other nutrients for any consumer looking at enhancing his/her protein intake. It can be a true asset in developing healthy and innovative recipes.


Offered as flakes, it can be directly sprinkled on omelets, soups, salads, toasts, etc. Alternatively, it can also be incorporated in powder form, to common food and beverages, both at home or on an industrial level.

Lynside® ProteYn

About us

Backing up on Lesaffre’s experience

Innovative global player in yeast, bacteria and pure molecule from fermentation, Gnosis by Lesaffre provides scientifically-proven and sustainably-sourced active ingredients and solutions to customers in the pharmaceutical, nutritional and functional food industries for a wide range of health benefits.


Learn more about us

Gnosis by Lesaffre is a business unit of Lesaffre.

Contact us

  • Ce champ n’est utilisé qu’à des fins de validation et devrait rester inchangé.



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2 A. Mero, “Leucine supplementation and intensive training,” Sports medicine (Auckland, N.Z.), vol. 27, no. 6, pp. 347–358, 1999

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9 M. Pooyandjoo, M. Nouhi, S. Shab-Bidar et al., “The effect of (L-)carnitine on weight loss in adults: a systematic review and meta-analysis of randomized controlled trials,” Obesity reviews : an official journal of the International Association for the Study of Obesity, vol. 17, no. 10, pp. 970–976, 2016.

10 M. Smriga, T. Ando, M. Akutsu et al., “Oral treatment with L-lysine and L-arginine reduces anxiety and basal cortisol levels in healthy humans,” Biomedical research (Tokyo, Japan), vol. 28, no. 2, pp. 85–90, 2007.

11 D. H. Rushton, “Nutritional factors and hair loss,” Clinical and experimental dermatology, vol. 27, no. 5, pp. 396–404, 2002.

12 E. L. Guo and R. Katta, “Diet and hair loss: effects of nutrient deficiency and supplement use,” Dermatology practical & conceptual, vol. 7, no. 1, pp. 1–10, 2017.

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21 E. A. Lysenko, T. F. Vepkhvadze, E. M. Lednev et al., “Branched-chain amino acids administration suppresses endurance exercise-related activation of ubiquitin proteasome signaling in trained human skeletal muscle,” The journal of physiological sciences : JPS, vol. 68, no. 1, pp. 43–53, 2018.

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