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Ingredient file // Other

Dried Trichoderma Longibrachiatum Fermentation Extract

An enzyme ingredient with unproven dog benefits

This dried extract comes from a fungal fermentation grown to produce enzymes. Makers add it to target plant cell walls, but no controlled trial shows that this particular extract improves digestion or stool quality in an ordinary kibble.

Role in the food Does a job
What it is
Dried material extracted and precipitated from a fungal fermentation grown to produce enzymes.
Made from
Fermented fungal culture and its medium
Main job
Plant cell wall enzymes
Typical amount
Not published for dog food
Watch for
Digestive claims without finished food testing
Not the same as
A live probiotic

Straight answer

Is Dried Trichoderma Longibrachiatum Fermentation Extract safe for dogs?

Read past it and judge the food

Treat this as a small functional addition. Read the main ingredients and nutrient analysis first. If the bag promises better digestion or stools because of this extract, ask for a controlled dog trial of the finished recipe and a measured enzyme activity in that food.

Why it is in the food
Plant cell wall enzymes

Our read // In our catalog

In 1 of every 14 foods we track

Share of foods that list it

7%

234 of the 3,204 foods with an ingredient list on file, from 9 brands. All dry dog food.

Each square is 1% of the catalog

Where it sits on the label

Median position 39. In the top five of 0 foods, so it is usually a minor ingredient.

Top five List position, heaviest first

Above the salt

0%

Usually listed after the salt, which caps it at roughly 1% of the recipe in 100% of foods.

Price per lb

Foods with it $3.08
All foods $3.25

Median of the cheapest bag price across 185 priced foods, 5% below the catalog. The price is the food's, not the ingredient's.

Who leans on it

44%

of the foods that list it are from Blue. 9 brands use it in total.

What it is

How it is made

Enzyme producers grow the fungus on a nutrient medium to obtain the substances it releases during fermentation. They extract and precipitate water soluble material, then dry it for use as a feed ingredient.2

  1. 01 // Source Fungal culture A selected fungal strain grows on a nutrient medium in a controlled fermentation.
  2. 02 // Process Enzymes produced The fermentation is run to produce enzymes and other substances released by the fungus.
  3. 03 // Process Extract precipitated Processors extract and precipitate water soluble material from the fermentation, separating it from the broader mixture.
  4. 04 // Output Dried extract The recovered material is dried before it is added to a feed or food recipe.

What is in it

Composition, as fed

31

% org. solids

Total organic solids in one commercial cellulase preparation from this fungus. The other 69% was water, ash and carrier. It is added for enzyme activity, not nutrition.

Total organic solids, commercial preparation 31%3
Water, ash and carrier, commercial preparation 69%4
Total organic solids, tested concentrate 87.8%3

Solids depend on product form: the concentrate used in the safety studies held 87.8% organic solids. No source publishes protein, fat or fiber for the feed ingredient, and Canada requires each product to carry its own guarantees.2,3

Why it is in the bag

Added for enzymes, with no proven payoff for dogs

  1. Main nutrition
  2. Supporting nutrient
  3. Does a job
  4. Mostly filler

Makers add it for enzyme activity aimed at plant cell walls, a technical job rather than nutrition. Labels list ingredients by weight, and this extract usually sits near the end of long lists, so it is likely a tiny share of the food. Enzymes work in small amounts, so size is not the issue. Proof is: a 14-dog trial of a different enzyme supplement found no gain in digestibility of a dry diet.1,2,3,5

  1. 01

    Supplies enzyme activity

    Producers make the extract for enzyme activity. Cellulase from this fungus breaks bonds in cellulose, though the ingredient name gives no activity measure for finished kibble.2,3

  2. 02

    Carries several enzyme activities

    The WHO review of this fungal cellulase preparation lists four primary enzyme activities, beyond cellulase alone, that can act on different plant cell wall bonds.3

How much No dog food inclusion rate for this named extract was found; a different enzyme blend was tested at 2.5 g per cup.1

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.

  1. Brands say

    Breaks down plant fiber in kibble

    Outruns the evidence

    Evidence

    1. Strong
    2. Some
    3. Thin
    4. None

    Cellulase from this fungus breaks cellulose bonds in a defined assay. That mechanism does not show how much active enzyme survives kibble making or acts in a dog's gut.2,3

  2. Brands say

    Makes ordinary kibble easier to digest

    Outruns the evidence

    Evidence

    1. Strong
    2. Some
    3. Thin
    4. None

    The cited sources did not test digestibility of this extract in dogs. A 13-week gavage safety study of a cellulase from this fungus measured safety only, and a separate 14-dog trial of a different enzyme blend found no digestibility improvement.1,3

  3. Brands say

    Improves stool quality

    Outruns the evidence

    Evidence

    1. Strong
    2. Some
    3. Thin
    4. None

    The 14 dog trial measured nutrient and energy digestibility, not a stool benefit from this extract. Its results cannot support a promise of firmer stool from the ingredient named here.1

  4. Owners say

    Adds beneficial live fungi

    Outruns the evidence

    Evidence

    1. Strong
    2. Some
    3. Thin
    4. None

    The Canadian feed description places the dried extract among nonviable fermentation products and specifies that it is not a source of viable microbial cells. This is an enzyme ingredient, not a probiotic.2

Straight answers

What owners ask

  1. Q01

    Is it just filler?

    No

    It is added for enzyme activity, a defined job. Whether that activity improves digestion in finished dog food remains unproven, so its presence is a weak reason to choose one bag over another.1,2

  2. Q02

    Does it replace pancreatic enzymes?

    No

    Dogs with pancreatic enzyme deficiency need enzyme replacement directed at that condition. This fungal extract is sold for feed enzyme activity, and its label name does not show that it provides pancreatic treatment.1,2

  3. Q03

    Can I judge its dose?

    Not from the bag

    The ingredient list names the extract but gives neither its amount nor its enzyme activity in the finished food. Ask the maker for a finished food activity guarantee if the enzyme claim matters to you.2

Who uses it

Brands, best sellers and the company it keeps

Top brands, by foods that list it

  1. Blue 102 / 186
  2. NutriSource 58 / 91
  3. Nature's Logic 24 / 32
  4. Instinct 20 / 98
  5. Horizon 18 / 27
  6. Canidae 7 / 35
  7. Evanger's 2 / 30
  8. I and Love and You 2 / 23
  9. 4health 1 / 8

Foods that list it / all the brand's recipes we track.

Amazon best sellers that list it

  1. #1 Blue Life Protection Formula Adult Chicken and Brown Rice Recipe Dry Dog Food
  2. #5 Blue Life Protection Formula Adult Small Breed Chicken and Brown Rice Recipe Dry Dog Food
  3. #27 Blue Life Protection Formula Senior Chicken and Brown Rice Recipe Dry Dog Food
  4. #35 Blue Life Protection Formula Small Breed Senior Chicken and Brown Rice Recipe Dry Dog Food
  5. #51 Blue Wilderness Adult Chicken plus Grains Recipe Dry Dog Food

Rank on Amazon's dog food best seller list, checked October 2026.

Usually listed with, share of the foods that list it

  1. Chicken Meal 50%
  2. Peas 49%
  3. Chicken Fat 49%
  4. Mixed Tocopherols 45%
  5. Chicken 41%
  6. Oatmeal 38%
  7. Pea Starch 36%
  8. Brown Rice 35%
  9. Natural Flavor 35%
  10. Barley 33%
  11. Flaxseed 32%
  12. Tapioca Starch 28%

On the shelf

Foods that list Dried Trichoderma Longibrachiatum Fermentation Extract

234 foods in our catalog list it. These 60 list it highest on the label.

Horizon Pulsar Grain-Free Salmon Formula Dry Dog FoodHorizonHorizon Pulsar Grain-Free Salmon Formula Dry Dog FoodDry // No. 20 on the labelCanidae All Life Stages Large Breed Formula Turkey Meal & Brown Rice Dry Dog FoodCanidaeCanidae All Life Stages Large Breed Formula Turkey Meal & Brown Rice Dry Dog FoodDry // No. 21 on the labelHorizon Legacy Grain-Free All Life Stages Salmon Formula Dry Dog FoodHorizonHorizon Legacy Grain-Free All Life Stages Salmon Formula Dry Dog FoodDry // No. 22 on the labelNutriSource Small Bites Adult Chicken & Rice Recipe Dry Dog FoodNutriSourceNutriSource Small Bites Adult Chicken & Rice Recipe Dry Dog FoodDry // No. 25 on the labelEvanger’s Super Premium New! Gamebird Recipe with Coconut Oil for Dogs - Dry Dog FoodEvanger'sEvanger’s Super Premium New! Gamebird Recipe with Coconut Oil for Dogs - Dry Dog FoodDry // No. 26 on the labelInstinct Be Natural Real Salmon & Brown Rice Recipe Dry Dog FoodInstinctInstinct Be Natural Real Salmon & Brown Rice Recipe Dry Dog FoodDry // No. 26 on the labelEvanger’s Super Premium Game Bird Recipe with Coconut Oil Dry Dog FoodEvanger'sEvanger’s Super Premium Game Bird Recipe with Coconut Oil Dry Dog FoodDry // No. 26 on the labelNutriSource Grain-Free Chicken & Pea Recipe Dry Dog FoodNutriSourceNutriSource Grain-Free Chicken & Pea Recipe Dry Dog FoodDry // No. 27 on the labelInstinct Be Natural Puppy Real Chicken & Brown Rice Recipe Dry Dog FoodInstinctInstinct Be Natural Puppy Real Chicken & Brown Rice Recipe Dry Dog FoodDry // No. 27 on the labelInstinct Raw Boost Grain-Free Recipe with Real Chicken for Gut Health Dry Dog FoodInstinctInstinct Raw Boost Grain-Free Recipe with Real Chicken for Gut Health Dry Dog FoodDry // No. 28 on the labelCanidae All Life Stages Chicken Meal & Rice Formula Dry Dog FoodCanidaeCanidae All Life Stages Chicken Meal & Rice Formula Dry Dog FoodDry // No. 29 on the labelNature’s Logic Original Pure Naturals Sardine Recipe Dry Dog FoodNature's LogicNature’s Logic Original Pure Naturals Sardine Recipe Dry Dog FoodDry // No. 31 on the label
Show 48 more
Horizon Pulsar Grain-Free Lamb Formula Dry Dog FoodHorizonHorizon Pulsar Grain-Free Lamb Formula Dry Dog FoodDry // No. 22 on the labelHorizon Taiga Grain-Free Pork Formula Dry Dog FoodHorizonHorizon Taiga Grain-Free Pork Formula Dry Dog FoodDry // No. 23 on the labelHorizon Taiga Grain-Free Chicken Formula Dry Dog FoodHorizonHorizon Taiga Grain-Free Chicken Formula Dry Dog FoodDry // No. 23 on the labelHorizon Pulsar Grain-Free Pork Formula Dry Dog FoodHorizonHorizon Pulsar Grain-Free Pork Formula Dry Dog FoodDry // No. 23 on the labelHorizon Pulsar Grain-Free Turkey Formula Dry Dog FoodHorizonHorizon Pulsar Grain-Free Turkey Formula Dry Dog FoodDry // No. 23 on the labelHorizon Pulsar Grain-Free Chicken Formula Dry Dog FoodHorizonHorizon Pulsar Grain-Free Chicken Formula Dry Dog FoodDry // No. 23 on the labelHorizon Legacy Grain-Free Puppy Tri-Protein Formula Dry Dog FoodHorizonHorizon Legacy Grain-Free Puppy Tri-Protein Formula Dry Dog FoodDry // No. 25 on the labelHorizon Taiga Whole Grain Pork Formula Dry Dog FoodHorizonHorizon Taiga Whole Grain Pork Formula Dry Dog FoodDry // No. 25 on the labelHorizon Legacy Slim & Vibrant - Grain-Free Dry Dog FoodHorizonHorizon Legacy Slim & Vibrant - Grain-Free Dry Dog FoodDry // No. 26 on the labelHorizon Pulsar WG Salmon - Dry Dog FoodHorizonHorizon Pulsar WG Salmon - Dry Dog FoodDry // No. 26 on the labelHorizon Pulsar Small Breed ALS - Grain-Free Dry Dog FoodHorizonHorizon Pulsar Small Breed ALS - Grain-Free Dry Dog FoodDry // No. 27 on the labelNutriSource Grain-Free Small Bites Chicken & Pea Recipe Dry Dog FoodNutriSourceNutriSource Grain-Free Small Bites Chicken & Pea Recipe Dry Dog FoodDry // No. 27 on the labelNutriSource Large Breed Trout & Rice Recipe Dry Dog FoodNutriSourceNutriSource Large Breed Trout & Rice Recipe Dry Dog FoodDry // No. 27 on the labelNutriSource Large Breed Puppy Dry Dog FoodNutriSourceNutriSource Large Breed Puppy Dry Dog FoodDry // No. 27 on the labelHorizon Taiga Whole Grain Chicken Formula Dry Dog FoodHorizonHorizon Taiga Whole Grain Chicken Formula Dry Dog FoodDry // No. 27 on the labelHorizon Pulsar Whole Grain Pork Formula Dry Dog FoodHorizonHorizon Pulsar Whole Grain Pork Formula Dry Dog FoodDry // No. 27 on the labelHorizon Pulsar Small Breed Weight Mgmt - Grain-Free Dry Dog FoodHorizonHorizon Pulsar Small Breed Weight Mgmt - Grain-Free Dry Dog FoodDry // No. 28 on the labelHorizon Taiga XL - Dry Dog FoodHorizonHorizon Taiga XL - Dry Dog FoodDry // No. 29 on the labelNutriSource Grain-Free Small Bites Seafood Select Recipe Dry Dog FoodNutriSourceNutriSource Grain-Free Small Bites Seafood Select Recipe Dry Dog FoodDry // No. 29 on the labelNutriSource Grain-Free Large Breed Chicken & Pea Recipe Dry Dog FoodNutriSourceNutriSource Grain-Free Large Breed Chicken & Pea Recipe Dry Dog FoodDry // No. 29 on the labelNutriSource Grain-Free Lamb Meal & Peas Recipe Dry Dog FoodNutriSourceNutriSource Grain-Free Lamb Meal & Peas Recipe Dry Dog FoodDry // No. 29 on the labelNutriSource Super Performance Dry Dog FoodNutriSourceNutriSource Super Performance Dry Dog FoodDry // No. 29 on the labelNutriSource Grain-Free Seafood Select Recipe Dry Dog FoodNutriSourceNutriSource Grain-Free Seafood Select Recipe Dry Dog FoodDry // No. 29 on the labelNutriSource Grain-Free Large Breed Puppy Dry Dog FoodNutriSourceNutriSource Grain-Free Large Breed Puppy Dry Dog FoodDry // No. 29 on the labelNutriSource Large Breed Beef & Rice Recipe Dry Dog FoodNutriSourceNutriSource Large Breed Beef & Rice Recipe Dry Dog FoodDry // No. 29 on the labelNutriSource Turkey & Rice Recipe Dry Dog FoodNutriSourceNutriSource Turkey & Rice Recipe Dry Dog FoodDry // No. 29 on the labelNutriSource Grain-Free Small and Medium Breed Puppy Dry Dog FoodNutriSourceNutriSource Grain-Free Small and Medium Breed Puppy Dry Dog FoodDry // No. 29 on the labelNutriSource Adult Chicken & Rice Recipe Dry Dog FoodNutriSourceNutriSource Adult Chicken & Rice Recipe Dry Dog FoodDry // No. 29 on the labelCanidae All Life Stages Lamb Meal & Rice Formula Dry Dog FoodCanidaeCanidae All Life Stages Lamb Meal & Rice Formula Dry Dog FoodDry // No. 29 on the labelNutriSource Large Breed Lamb Meal & Rice Recipe Dry Dog FoodNutriSourceNutriSource Large Breed Lamb Meal & Rice Recipe Dry Dog FoodDry // No. 30 on the labelNutriSource Performance Chicken & Rice Recipe Dry Dog FoodNutriSourceNutriSource Performance Chicken & Rice Recipe Dry Dog FoodDry // No. 30 on the labelNutriSource Small & Medium Breed Puppy Dry Dog FoodNutriSourceNutriSource Small & Medium Breed Puppy Dry Dog FoodDry // No. 30 on the labelInstinct Be Natural Real Chicken & Brown Rice Recipe Dry Dog FoodInstinctInstinct Be Natural Real Chicken & Brown Rice Recipe Dry Dog FoodDry // No. 30 on the labelInstinct Be Natural Real Beef & Barley Recipe Dry Dog FoodInstinctInstinct Be Natural Real Beef & Barley Recipe Dry Dog FoodDry // No. 30 on the labelHorizon Legacy Grain-Free Adult Tri-Protein Formula Dry Dog FoodHorizonHorizon Legacy Grain-Free Adult Tri-Protein Formula Dry Dog FoodDry // No. 30 on the labelNutriSource Trout & Rice Recipe Dry Dog FoodNutriSourceNutriSource Trout & Rice Recipe Dry Dog FoodDry // No. 31 on the labelNutriSource Lamb Meal & Rice Recipe Dry Dog FoodNutriSourceNutriSource Lamb Meal & Rice Recipe Dry Dog FoodDry // No. 31 on the labelNutriSource Beef & Rice Recipe Dry Dog FoodNutriSourceNutriSource Beef & Rice Recipe Dry Dog FoodDry // No. 31 on the labelI and Love and You Nude Super Food Poultry Palooza Grain-Free Dry Dog FoodI and Love and YouI and Love and You Nude Super Food Poultry Palooza Grain-Free Dry Dog FoodDry // No. 31 on the labelCanidae Under the Sun Grain-Free Recipe Large Breed Real Chicken Dry Dog FoodCanidaeCanidae Under the Sun Grain-Free Recipe Large Breed Real Chicken Dry Dog FoodDry // No. 31 on the labelCanidae Under The Sun Grain-Free Lamb Recipe Dry Dog FoodCanidaeCanidae Under The Sun Grain-Free Lamb Recipe Dry Dog FoodDry // No. 31 on the labelNature’s Logic Original Pure Naturals Beef Recipe Dry Dog FoodNature's LogicNature’s Logic Original Pure Naturals Beef Recipe Dry Dog FoodDry // No. 32 on the labelNature’s Logic Original Pure Naturals Chicken Recipe Dry Dog FoodNature's LogicNature’s Logic Original Pure Naturals Chicken Recipe Dry Dog FoodDry // No. 32 on the labelNutriSource Grain-Free Large Breed Lamb Meal & Peas Recipe Dry Dog FoodNutriSourceNutriSource Grain-Free Large Breed Lamb Meal & Peas Recipe Dry Dog FoodDry // No. 32 on the labelNutriSource Weight Management Dry Dog FoodNutriSourceNutriSource Weight Management Dry Dog FoodDry // No. 32 on the labelNutriSource Senior Chicken & Rice Recipe Dry Dog FoodNutriSourceNutriSource Senior Chicken & Rice Recipe Dry Dog FoodDry // No. 32 on the labelNutriSource Large Breed Chicken & Rice Recipe Dry Dog FoodNutriSourceNutriSource Large Breed Chicken & Rice Recipe Dry Dog FoodDry // No. 32 on the labelNature’s Logic Grain-Free Canine Chicken Meal Feast Dry Dog FoodNature's LogicNature’s Logic Grain-Free Canine Chicken Meal Feast Dry Dog FoodDry // No. 32 on the label

Sources

What we read

Checked October 1, 2026.

  1. 1 Effect of enzyme supplements on macronutrient digestibility by healthy adult dogs Journal of Nutritional Science, 2017 // Journal
  2. 2 Proposed new and amended livestock feed ingredients: Trichoderma reesei and Trichoderma longibrachiatum fermentation products Canadian Food Inspection Agency, 2026 // Regulator
  3. 3 Cellulase derived from Trichoderma longibrachiatum WHO Food Additives Series, 1992 // Government
  4. 4 Enzyme preparations WHO Food Additives Series 22, 1988 // Government
  5. 5 Animal Food Labeling and Pet Food Claims U.S. Food and Drug Administration, 2026 // Regulator
An ingredient on its own tells you very little. What matters is how much of it there is and where it sits in the list. That is why we weigh the top five rather than reacting to any single name further down. Back to the wiki

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