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Cellulase from Aspergillus niger

greener alternative

powder, ≥0.3 units/mg solid

1,4-(1,3:1,4)-β-D-Glucan 4-glucanohydrolase
CAS Number:
Enzyme Commission number:
EC Number:
MDL number:



Quality Level

specific activity

≥0.3 units/mg solid

greener alternative product characteristics

Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.

greener alternative category


storage temp.


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General description

The FDA recognizes cellulase from A. niger as GRAS (Generally Regarded As Safe) if non-pathogenic and non-toxigenic strains, as well as current good manufacturing practices, are used in production.
We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Greener Chemistry. This product has been used as enzyme for alternative energy. For more information see the Enzymes for Alternative Energy Research.

Cellulase belongs to the family of glycoside hydrolase, which is secreted by various cellulolytic microorganisms.


Cellulase from Sigma has been used to study the ability of several of its possible substrates, cellulose, Avicel PH-101, and filter paper, to protect enzyme activity during monogastric diegstion in animal and avian digestive tracts.
The enzyme has also been approved as a secondary direct food additive as an aid in clam and shrimp processing.


5000, 25000, 100000 units in poly bottle

Biochem/physiol Actions

Cellulase from Aspergillus niger catalyzes the hydrolysis of endo-1,4-β-D-glycosidic linkages in cellulose, lichenin, barley glucan, and the cellooligosaccharides cellotriose to cellohexaose. It does not cleave cellobiose or p-nitrophenyl-β-D-glucoside. This enzyme will also cleave intact glycosaminoglycan from a core peptide by hydrolyzing the xylosyl serine linkage.

Unit Definition

One unit will liberate 1.0 μmole of glucose from cellulose in one hr at pH 5.0 at 37 °C (2 hr incubation time).


Health hazard

Signal Word


Hazard Statements

Hazard Classifications

Resp. Sens. 1

Storage Class Code

13 - Non Combustible Solids



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

Enter Lot Number to search for Certificate of Origin (COO).

  1. Which document(s) contains shelf-life or expiration date information for a given product?

    If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.

  2. How do I get lot-specific information or a Certificate of Analysis?

    The lot specific COA document can be found by entering the lot number above under the "Documents" section.

  3. How do I find price and availability?

    There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers.

  4. What is the Department of Transportation shipping information for this product?

    Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product. 

  5. What is the solution stability of Cellulase, Product C1184?

    Sigma-Aldrich has not determined the solution stability for this product.  However, it is reported in Methods in Enzymology, 160, 264 (1988) that cellulase from Aspergillus niger is "completely stable over the range of pH 5.0-8.0 at 4°C for 24 hours and retains about 50% of its original activity after heating at 70°C for 10 minutes.  The enzyme is completely inactivated by heating at 80°C for 10 minutes."

  6. Are there any additives to Cellulase, Product C1184, in addition to the enzyme itself?

    Per information from our supplier, maltodextrin is an extender in this product.  Maltodextrin can vary in glucose chain lengths of 2-12. There can also be some free glucose in the product. Either sorbitol or propylene glycol is added to the product as a stabilizer during processing. These components may be "flashed off" during processing, but some small amount may still be present.

  7. What is the molecular weight of Product C1184, Cellulase from Aspergillus niger?

    The molecular weight is 26,000 Daltons.

  8. My question is not addressed here, how can I contact Technical Service for assistance?

    Ask a Scientist here.

Meena Ganesan et al.
Biotechnology for biofuels, 13, 124-124 (2020-07-21)
The current production of bioethanol based on lignocellulosic biomass (LCB) highly depends on thermostable enzymes and extremophiles owing to less risk of contamination. Thermophilic bacterial cellulases are preferred over fungi due to their higher growth rate, presence of complex multi-enzymes
Fuxi Shi et al.
ACS omega, 5(38), 24780-24789 (2020-10-06)
A major challenge in converting lignocellulose to biofuel is overcoming the resistance of the biomass structure. Herein, sequential dilute acid-alkali/aqueous ammonia treatment was evaluated to enhance enzymatic hydrolysis of poplar biomass by removing hemicellulose first and then removing lignin with
E Schuster et al.
Applied microbiology and biotechnology, 59(4-5), 426-435 (2002-08-13)
Aspergillus niger is one of the most important microorganisms used in biotechnology. It has been in use already for many decades to produce extracellular (food) enzymes and citric acid. In fact, citric acid and many A. niger enzymes are considered
Usage of Enzyme Substrate to Protect the Activities of Cellulase, Protease and α-Amylase in Simulations of Monogastric Animal and Avian Sequential Total Tract Digestion
Wang HT and Hsu JT
Asian-Australasian Journal of Animal Sciences, 19(8), 1164-1173 (2006)
Structural organization and a standardized nomenclature for plant endo-1, 4-beta-glucanases (cellulases) of glycosyl hydrolase family 9
Urbanowicz BR, et al.
Plant Physiology, 144(4), 1693-1696 (2007)


Enzymatic Assay of Cellulase

To standardize an enzymatic assay procedure of cellulase.

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