AMYLASE FROM ASPERGILLUS NIGER

CAS: 977031-46-1 ENZYME, FLAVOR ENHANCER, FLAVORING AGENT OR ADJUVANT, LEAVENING AGENT, PROCESSING AID

Amylase from Aspergillus niger is a microbial enzyme used in food processing to hydrolyze starches into simpler sugars and facilitate food transformations.

What It Is

Amylase from Aspergillus niger is a microbial enzyme preparation derived from the filamentous fungus Aspergillus niger that catalyzes the hydrolysis of alpha-1,4-glycosidic bonds in starch and related polysaccharides. As a type of alpha-amylase enzyme, it functions to break down complex carbohydrates into smaller sugars. It is recognized by the CAS Registry Number 977031-46-1 and is used in food manufacturing to improve processing efficiency and modify the structure of carbohydrate-rich ingredients. This enzyme belongs to a class of proteins that act on starch substrates and is typically categorized based on its origin and activity. In food science and technology, the term "processing aid" refers to substances such as this amylase that help transform raw materials without adding significant nutritional content of their own. It may also be listed under various synonyms in regulatory or formulation contexts, though its core role as an enzyme remains the same. Alpha-amylase enzymes like this one are widely studied in enzymology and industrial biotechnology for their ability to depolymerize starch molecules, yielding dextrins and maltose, which can influence texture, fermentability, and sugar composition in food products.

How It Is Made

The production of amylase from Aspergillus niger involves controlled fermentation of selected strains of the fungus under conditions optimized for enzyme secretion. Typically, Aspergillus niger is cultured in nutrient media containing a carbon source such as starch or simple sugars, which induce the organism to produce and secrete the enzyme. After fermentation, the culture medium is processed to separate the extracellular enzyme from biomass and other microbial byproducts. Downstream processing often includes filtration, concentration, and purification steps to obtain a high-activity enzyme preparation that meets food-grade quality standards. Stabilization can be achieved through drying or formulation with carriers, depending on the intended application. The resulting enzyme preparation may be standardized for activity units to ensure consistent performance in industrial use. Manufacturers also routinely perform quality control assays to confirm enzymatic activity, absence of contaminants, and compliance with food safety specifications. Regulatory agencies and advisory bodies often provide guidance on production practices and purity criteria for microbial enzyme preparations used in food processing.

Why It Is Used In Food

Amylase from Aspergillus niger is used in food processing because of its ability to accelerate the breakdown of starch, a major polysaccharide in grains and plant-derived foods, into simpler sugars. This enzymatic activity improves several food manufacturing processes, including starch hydrolysis during the production of syrups, brewing, and baking. By converting complex carbohydrates into fermentable sugars or dextrins, amylase facilitates fermentation, enhances dough handling properties, and can increase product yield. In baking, amylases help improve crumb structure and shelf life by modifying starch during dough fermentation. In brewing and starch processing industries, the enzyme enables efficient saccharification of plant materials into fermentable sugars, which can then be converted to alcohol or sweeteners. As a result, it plays a functional role in optimizing texture, consistency, and processing efficiency across a range of food applications. Given its targeted catalytic action and specificity for starch substrates, this enzyme is selected for applications where controlled hydrolysis is required without introducing extraneous flavors or undesirable chemical residues.

Adi Example Calculation

Illustrative Example: To understand how safety margins are considered, imagine a food enzyme preparation evaluated in a toxicology study where animals were given enzyme protein at high doses without observing adverse effects. If the no observed adverse effect level (NOAEL) from such a study is, for example, X mg of the enzyme preparation per kilogram of body weight per day, and an estimated human exposure from typical food processing uses is Y mg/kg body weight per day, regulators compare Y to X to ensure Y is much lower, providing a significant margin of safety. This comparison helps determine whether the enzyme’s use under intended conditions poses any concern. It does not imply that consumers should target or avoid a specific intake amount; rather, it provides a regulatory assurance that exposure levels from food processing are unlikely to cause harm based on scientific evidence.

Safety And Health Research

Safety evaluations conducted by regulatory bodies such as EFSA have addressed the toxicological profile of alpha-amylase enzymes derived from Aspergillus niger strains. These assessments consider potential genotoxicity, subchronic toxicity, and the likelihood of allergic sensitization following dietary exposure. Based on available data from repeated-dose studies and genetic toxicity tests, EFSA has concluded for specific enzyme preparations that there are no safety concerns under the intended conditions of use, though it noted that the risk of allergic reactions cannot be completely excluded but is considered low. Research also examines the enzyme’s compositional and biochemical characteristics, including its activity and stability profiles, to support risk assessments relevant to food manufacturing conditions. Such evaluations look at residual Total Organic Solids (TOS) in final products and compare estimated dietary exposures against toxicological reference points determined in laboratory studies. While enzymes like this have been studied in industry and academic settings for functional performance and safety parameters, the specific health impact on consumers is largely mediated by the fact that enzyme proteins are typically denatured or degraded during processing or digestion. Regulatory safety evaluations focus on ensuring that enzyme preparations meet purity criteria and do not introduce harmful contaminants or residues that may pose risk.

Regulatory Status Worldwide

In the United States, amylase enzymes derived from microbial sources may be used in food processing, although specific enzyme preparations are not individually listed under Title 21 of the Code of Federal Regulations for all uses. The FDA’s "Substances Added to Food" database recognizes AMYLASE FROM ASPERGILLUS NIGER with CAS 977031-46-1 and lists its technical effects in foods, including use as an enzyme and processing aid, but does not provide a specific CFR section authorizing its general use in all applications. Because enzyme preparations can also be the subject of GRAS notices or regulatory decisions, the absence of a direct CFR listing means that general recognition of safety may be established by individual manufacturers through GRAS determinations rather than specific additive listing in the Code of Federal Regulations. fda.notes: electronic CFR citation not found in the available sources. In the European Union, food enzymes such as alpha-amylase from Aspergillus niger are subject to safety evaluation and inclusion on the Union list of authorized food enzymes following assessment by the European Food Safety Authority (EFSA). Safety evaluations have concluded that alpha-amylases produced by A. niger strains do not raise safety concerns under the intended conditions of use based on available scientific data including toxicology and allergenicity assessments. EFSA’s scientific opinions support regulatory decisions in member states for specific enzyme preparations. Internationally, expert bodies like the Joint FAO/WHO Expert Committee on Food Additives (JECFA) evaluate food enzymes and provide specifications, although a dedicated JECFA evaluation specific to this CAS was not available in the sources d. The global regulatory landscape for enzymes in food processing combines national and regional assessments of safety and use conditions.

Taste And Functional Properties

Amylase itself does not contribute a distinct flavor but influences the sensory profile of foods by modifying carbohydrate structures. By breaking down starch into dextrins and maltose, it can subtly enhance sweetness and improve texture in processed foods as smaller sugar units may interact differently with other ingredients during baking or fermentation. Functionally, alpha-amylases are active across a range of temperatures and pH conditions relevant to food processing, although specific activity profiles depend on the enzyme formulation and application environment. In general, these enzymes are selected for thermostability and activity under the conditions of the intended process, such as dough proofing or mash conversion. The enzyme’s activity can affect the viscosity and consistency of starch-rich mixtures, aiding in achieving uniform texture and desired structural properties. Because they act specifically on alpha-1,4-glycosidic linkages in starch, they do not directly impact non-starch components of food formulations.

Acceptable Daily Intake Explained

Acceptable Daily Intake (ADI) is a concept used by regulatory bodies to describe the daily amount of a substance that can be consumed over a lifetime without appreciable health risk. For many food enzymes, including amylase preparations, a numeric ADI may not be established if the enzyme is considered to have low toxicity and is used at levels that result in negligible dietary exposure. In such cases, regulatory bodies may conclude that an ADI is not specified, reflecting that the available data do not indicate a need for a quantitative intake limit. When safety assessments are conducted, toxicological studies provide information on doses that do not produce adverse effects in animal models. These data are then compared to estimated dietary exposures to ensure a sufficient margin of safety. It’s important to note that ADI values are not recommendations for consumption but benchmarks used in risk assessment to guide regulatory decisions and ensure consumer protection.

Comparison With Similar Additives

Amylase from Aspergillus niger can be compared with other food enzymes such as glucoamylase and protease, which also serve processing functions but act on different substrates. Glucoamylase hydrolyzes terminal glucose units from starch chains to yield glucose and is often used in syrup production, whereas proteases break down proteins and are common in cheese making and meat tenderization. All these enzymes share the functional role of enhancing specific biochemical reactions during food processing. Compared with carbohydrase enzymes from bacterial sources like Bacillus species, fungal amylases may have different activity profiles and stability characteristics, influencing their selection for particular processes. For example, Bacillus-derived amylases may exhibit higher thermostability for high-temperature applications, while Aspergillus-derived enzymes may be preferred for processes operating under different pH or temperature conditions.

Common Food Applications Narrative

Amylase from Aspergillus niger finds widespread use across several key food processing sectors due to its ability to break down starch and modify carbohydrate compositions. In baked goods, this enzyme can improve dough fermentation and enhance the texture of bread and related products by facilitating the conversion of starch to simpler sugars that yeast can more readily ferment. This can contribute to better rise and crumb structure, particularly in enriched or whole-grain doughs. In brewing and distilled spirits production, amylase plays a central role in converting grain starches into fermentable sugars during mashing, supporting efficient fermentation and consistent alcohol yields. Likewise, in the production of syrups and sweeteners, enzymatic hydrolysis of starch using amylase helps generate maltose-rich syrups and other carbohydrate derivatives used as ingredients or sweetening agents. Other applications include use in fruit and vegetable processing to reduce viscosity and enhance juice yield, as well as in non-wine vinegar production and certain dairy formulations where carbohydrate modification improves processing outcomes. Across these diverse uses, the enzyme functions as a processing aid, helping manufacturers achieve consistent product quality and efficient conversion of raw materials.

Safety & Regulations

FDA

  • Notes: FDA recognizes the substance in its "Substances Added to Food" database with technical effects but no specific CFR section authorizing general use was identified in the sources.

EFSA

  • Notes: EFSA has conducted safety evaluations for amylase preparations and concluded that no safety concerns were identified under intended conditions of use.
  • Approved: True

JECFA

  • Notes: Specific JECFA evaluation for this CAS was not found in the authoritative sources.

Sources

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