Ingredient file // Other
Dried Saccharomyces Cerevisiae Fermentation Extract
A yeast extract with benefits still unproven
This dried ingredient is the water soluble fraction separated from a yeast fermentation run. It gives manufacturers a concentrated fermentation ingredient, but no dog trial shows that this specific extract improves digestion, immunity or appetite.
Role in the food Does a job- What it is
- Water soluble material separated from a yeast fermentation, concentrated and dried for use in feed.
- Made from
- Liquid from cultivated yeast fermentation
- Main job
- Concentrated fermentation fraction
- Typical amount
- Not published for this exact extract
- Watch for
- Benefits borrowed from different yeast products
- Not the same as
- Whole yeast fermentation product
Straight answer
Is Dried Saccharomyces Cerevisiae Fermentation Extract safe for dogs?
Give the extract no unmeasured health credit
Read the ingredient list and guaranteed analysis first. Its amount here is not published, so treat it as an unproven functional add on, not a performance guarantee. If the bag promises digestive help, look for a named enzyme with a stated activity level. Do not count it as a probiotic, live yeast, or protein source.
- Why it is in the food
- Concentrated fermentation fraction
- Watch for
- Dogs on diagnostic food trials
- How common
- Listed by 7 of the 3,204 foods we track
Our read // In our catalog
In 1 of every 458 foods we track
Share of foods that list it
<1%
7 of the 3,204 foods with an ingredient list on file, from 1 brand. All dry dog food.
Each square is 1% of the catalog
Where it sits on the label
Median position 18. In the top five of 0 foods, so it is usually a minor ingredient.
Above the salt
Usually listed after the salt, which caps it at roughly 1% of the recipe in 100% of foods.
Price per lb
Median of the cheapest bag price across 1 priced foods, 14% above the catalog. The price is the food's, not the ingredient's.
Who leans on it
100%
of the foods that list it are from Horizon. 1 brand use it in total.
What it is
How it is made
Producers cultivate yeast in a fermentation intended to make enzymes. They separate the water soluble material from the rest of the mixture, concentrate the selected fraction and dry it for use in feed.4,6
- 01 // Source Cultivated yeast Saccharomyces cerevisiae grows in a nutrient medium during a controlled fermentation.
- 02 // Process Separate the liquid The water soluble material is separated from suspended solids in the fermentation mixture.
- 03 // Process Concentrate the fraction Extraction and precipitation isolate material from the liquid rather than retaining the whole fermentation mixture.
- 04 // Output Dried extract Water is removed from the separated fraction before it reaches a feed manufacturer.
What is in it
Composition, dry matter
N/A
for extract
No public nutrient assay for this separated extract was found. The comparison rows describe a whole fermentation product and must not be used as this ingredient's analysis.
Why it is in the bag
A small flavor or enzyme add on, benefit unproven
- Main nutrition
- Supporting nutrient
- Does a job
- Mostly filler
Makers add it as a functional extra: a brand sells it as a flavor enhancer, and its feed definition ties it to an enzyme focused fermentation. Labels list ingredients by weight, so when it appears low on the list, a food likely holds too little to change its nutrition. One dog test found a 1.9:1 preference for kibble with 0.2% of a whole yeast fermentation product, but no trial has tested this extract.1,4,8,10
-
01
Adds a selected fraction
Extraction lets a manufacturer use material recovered from a yeast fermentation without adding the whole mixture of cells, growth medium and fermentation products.4,6
-
02
Ships as a dry ingredient
Removing the liquid makes the separated fraction practical to store and weigh into a recipe. Public sources give no price or production volume for this exact extract.6
-
03
Supports a flavor story
A brand describes it as a flavor enhancer. Dog preference tests exist for other yeast products, but none of the opened trials tested this extract.1,8
-
04
Supports an enzyme claim
The feed definition links the extract to an enzyme focused fermentation. The ingredient name alone gives neither a specific enzyme nor its activity in finished food.4,5
How much No opened dog study tested an inclusion rate for this extract; the published doses belong to different yeast products.1,2,4
Our read // The claims
What the evidence supports
Strong: controlled studies in dogs agree. Some: small or mixed dog data. Thin: mechanism or lab work only. None: nothing, or the evidence points the other way.
-
Brands say
Yeast fermentation makes kibble tastier
Outruns the evidence
Evidence
- Strong
- Some
- Thin
- None
A separate dog preference test favored kibble containing 0.2% of a whole yeast fermentation product. The 12-dog digestibility group was separate. Neither test measured preference for this extracted fraction.1,4,8
-
Brands say
It improves a dog's digestion
Outruns the evidence
Evidence
- Strong
- Some
- Thin
- None
A 12-dog crossover trial found no improvement in nutrient digestibility with a whole fermentation product. The ingredient name supplies no enzyme activity figure, and that trial cannot show a digestive benefit for this extract.1,4,5
-
Brands say
It supports the immune system
Outruns the evidence
Evidence
- Strong
- Some
- Thin
- None
Trials in 12 and 16 healthy dogs found changes in some immune markers after feeding whole fermentation products. Neither tested this separated extract or showed that dogs were less likely to become ill.1,2,4
-
Brands say
It supplies beta-glucans and B vitamins
Outruns the evidence
Evidence
- Strong
- Some
- Thin
- None
A review places beta-glucans mainly in yeast cell walls and vitamins in other yeast fractions. A 5-lot assay measured a whole fermentation product, not this extract. Its amounts of either substance remain unpublished.3,7,8
-
Brands say
This yeast extract is a probiotic
Outruns the evidence
Evidence
- Strong
- Some
- Thin
- None
Kentucky feed guidance lists this exact ingredient name as unsuitable for declaring viable yeast. A probiotic claim needs live microbes, while an extracted and dried fermentation fraction does not promise live yeast.5,8
Straight answers
What owners ask
-
Q01
Is it just filler?
NoIt is a deliberately separated fermentation fraction. Its benefit in this food is unproven, so the label deserves no credit for better digestion unless the maker identifies an active enzyme and supplies an activity guarantee.4,5
-
Q02
Is it the same as brewer's yeast?
NoBrewer's dried yeast is yeast biomass left after brewing. This ingredient comes from water soluble material separated from a fermentation. Nutrient figures for whole brewer's yeast do not describe it.4,6
-
Q03
Does it add meaningful protein?
Not knownNo public assay gives this extract's protein content, and the bag does not give its recipe amount. Protein measured in a whole fermentation product cannot tell you what this separated fraction contributes.3,4
Who uses it
Brands, best sellers and the company it keeps
Top brands, by foods that list it
Foods that list it / all the brand's recipes we track.
Usually listed with, share of the foods that list it
- Mixed Tocopherols 100%
- Pea Fibre 86%
- Peas 86%
- Pea Starch 86%
- Chicken Meal 57%
- Chicken Fat 57%
- Salmon Oil 57%
- Red Lentils 57%
- Flax 57%
- Chicken 43%
- Flaxseed 43%
- Egg Product 43%
On the shelf
Foods that list Dried Saccharomyces Cerevisiae Fermentation Extract
7 foods in our catalog list it, highest on the label first.
HorizonHorizon Amicus Grain-Free All Life Stages Lamb Formula Dry Dog Food
HorizonHorizon Amicus Grain-Free All Life Stages Salmon Formula Dry Dog Food
HorizonHorizon Legacy Grain-Free All Life Stages Salmon Formula Dry Dog Food
HorizonHorizon Legacy Grain-Free Puppy Tri-Protein Formula Dry Dog Food
HorizonHorizon Complete Whole Grain Large Breed Puppy Chicken Formula Dry Dog Food 
Sources
What we read
Checked October 1, 2026.
- 1 Effects of a Saccharomyces cerevisiae fermentation product on fecal characteristics, nutrient digestibility, fecal fermentative end-products, fecal microbial populations, immune function, and diet palatability in adult dogs
- 2 Effects of a Saccharomyces cerevisiae fermentation product-supplemented diet on circulating immune cells and oxidative stress markers of dogs
- 3 Composition and thermal processing evaluation of yeast ingredients as thiamin sources compared to a standard vitamin premix for canned cat food
- 4 Official Feed Terms, Common or Usual Ingredient Names and Definitions
- 5 Labeling Products Containing Direct Fed Microorganisms (DFMs), Yeasts, and Enzymes
- 6 Canadian Feed Ingredients Table (CFIT)
- 7 Potential benefits of yeast Saccharomyces and their derivatives in dogs and cats: a review
- 8 Dried Saccharomyces Cerevisiae Fermentation Extract in Dog Food
- 9 Cooking Up a Food Allergy: Conducting a Diagnostic Food Trial
- 10 Animal Food Labeling and Pet Food Claims