AMYLASE FROM ASPERGILLUS ORYZAE

CAS: 977082-95-3 ENZYME, FLAVOR ENHANCER, FLAVORING AGENT OR ADJUVANT, LEAVENING AGENT, PROCESSING AID

Amylase from Aspergillus oryzae is a microbial enzyme preparation used in food processing to hydrolyze starch and enhance food texture and flavor.

What It Is

Amylase from Aspergillus oryzae is a food enzyme preparation derived from the controlled fermentation of the nonpathogenic fungus Aspergillus oryzae. It belongs to the class of enzymes known as alpha-amylases (EC 3.2.1.1), which catalyze the hydrolysis of 1,4-alpha-D-glucosidic linkages in polysaccharides, yielding dextrins, oligosaccharides, and smaller sugars. This enzyme is used in diverse food applications such as baking, brewing, starch processing, and other food manufacturing processes where controlled starch breakdown improves functionality and sensory qualities. The CAS number given in the input (977082-95-3) corresponds to a specific preparation or formulation of this enzyme preparation, whereas the general alpha-amylase activity from A. oryzae is widely referenced in food additive specifications and enzyme monographs. According to international food additive tables, amylase from Aspergillus oryzae preparations are often classified under INS number 1100 in enzyme preparations, although detailed numeric regulatory values like an official E-number may not be universally assigned for all enzyme preparations of this type. The description of this enzyme preparation reflects its role as a tailored biocatalyst produced by microbial fermentation and isolated for technological use in food processing.

How It Is Made

Amylase from Aspergillus oryzae is manufactured by cultivating selected non-toxicogenic strains of A. oryzae under controlled fermentation conditions. During fermentation, the fungus secretes alpha-amylase into the growth medium. After the fermentation cycle is complete, the culture broth containing the enzyme is separated from the fungal biomass. The enzyme in the broth can be concentrated and purified to a desired activity level using filtration, concentration steps, and sometimes additional purification technologies, such as precipitation or chromatographic steps to achieve a stable formulation suitable for food use. The final enzyme preparation may be stabilized and formulated as a liquid or powder depending on application needs. The process must adhere to good manufacturing practices and food-grade specifications to ensure consistency and safety of the enzyme preparation for use in food processing.

Why It Is Used In Food

Amylase from Aspergillus oryzae is used in food manufacturing because it facilitates the breakdown of complex carbohydrates, such as starch, into simpler sugars that are easier for yeast to ferment or that contribute to desired textural and sensory characteristics. In baking, this enzyme helps convert starch in flour into sugars that improve yeast fermentation, dough rise, and crust color. In brewing and starch processing, the controlled hydrolysis of starch improves sugar availability for fermentation and reduces processing time. The enzyme can act as a processing aid, meaning it performs a function during production and does not remain active in the finished food in a way that affects taste or nutrition. These benefits make amylase a versatile tool to optimize product quality and processing efficiency across multiple food categories.

Adi Example Calculation

In regulatory evaluations of food enzymes, hypothetical exposure calculations may be used to estimate intake of total organic solids from food enzyme preparations across dietary patterns. For example, if an exposure estimate for a particular amylase preparation were calculated to be a fraction of a milligram per kilogram body weight per day based on typical food consumption data, this figure would be compared with results from toxicological studies that identify levels with no observed adverse effects. A large margin between exposure estimates and no observed adverse effect levels supports the conclusion that typical dietary exposure is unlikely to pose safety concerns.

Safety And Health Research

Safety evaluations of amylase preparations from Aspergillus oryzae have been conducted by authoritative bodies. The European Food Safety Authority (EFSA) has published scientific opinions concluding that certain alpha-amylase food enzyme preparations derived from non-genetically modified Aspergillus oryzae strains do not raise safety concerns under their intended conditions of use, with assessments including genotoxicity testing, subchronic toxicity studies, and evaluations of allergenicity potential. These assessments recognize that while some enzyme protein sequences may share similarities with known respiratory allergens, the likelihood of allergic reactions from dietary exposure is considered low. International bodies like JECFA have established enzyme specifications and evaluated amylase preparations, supporting their safe use in food processing.

Regulatory Status Worldwide

International regulatory bodies have evaluated amylase preparations from microbial sources, including Aspergillus oryzae, for food use. The Joint FAO/WHO Expert Committee on Food Additives (JECFA) evaluated alpha-amylase preparations from A. oryzae and assigned them an INS number 1100 in enzyme preparations, with an "acceptable" status for use as a food additive, reflecting safety considerations for its technological function and exposure context. This evaluation covers the enzyme's identity and specifications in enzyme monographs. In the United States, enzyme preparations including amylases may be recognized as GRAS (Generally Recognized as Safe) for specific applications by the FDA when supported by appropriate scientific evidence, although not all individual preparations are explicitly listed in the Code of Federal Regulations list of affirmed GRAS substances. In the European Union, food enzymes including alpha-amylase from Aspergillus oryzae have been subject to safety assessments by EFSA Panels, which have concluded under defined conditions of use that such enzymes do not give rise to safety concerns. Regulatory frameworks require that food enzyme preparations are produced under good manufacturing practices and meet safety specifications appropriate for their intended technological functions.

Taste And Functional Properties

Amylase from Aspergillus oryzae is not used for flavor itself but influences taste indirectly by generating fermentable sugars and modifying starch matrices. The conversion of starch to shorter-chain sugars can subtly increase sweetness and enhance browning reactions during cooking or baking, thereby contributing to flavor profiles. The enzyme generally functions in aqueous environments and exhibits optimal activity within specific pH and temperature ranges characteristic of the food process in which it is used. In baking, amylase activity complements yeast metabolism and promotes gas production for better volume and crumb structure. As a biocatalyst, the enzyme's activity is defined by its ability to cleave glycosidic linkages rather than by imparting a direct flavor note.

Acceptable Daily Intake Explained

Acceptable Daily Intake (ADI) is a risk assessment concept used by regulatory bodies to describe the amount of a substance that can be ingested daily over a lifetime without appreciable health risk. For many enzyme preparations including amylase from Aspergillus oryzae, traditional ADI values with specific numeric limits are not always specified because these enzymes function during processing and are either inactivated or present at negligible levels in the finished food. Instead, safety assessments focus on technological need, exposure estimates, toxicology data, and margins of safety derived from studies, as appropriate to the regulatory framework. An "acceptable" designation, such as that given by JECFA enzyme monographs, reflects evaluation of safety data in the context of expected food use.

Comparison With Similar Additives

Amylase from Aspergillus oryzae shares functional similarities with other microbial amylases used in food processing, such as amylases derived from Bacillus species or Aspergillus niger strains. While all these enzymes catalyze starch hydrolysis, differences in optimal activity ranges for pH and temperature may make one source more suitable than another for specific applications. For example, fungal amylases may exhibit different stability profiles compared with bacterial amylases, influencing their performance in baking versus starch processing. Additionally, glucoamylase preparations, which also act on starch but yield glucose more directly, are often used alongside alpha-amylase when complete saccharification is desired. Compared with chemical leavening agents or non-enzymatic processing aids that affect dough rising or texture, enzyme preparations offer specific catalytic mechanisms with minimal direct impact on sensory properties aside from their role in modifying starch.

Common Food Applications Narrative

Amylase from Aspergillus oryzae finds broad use across many kinds of food processing where starch transformation enhances product quality. In baked goods, amylase helps break down flour starches into simpler sugars, supporting yeast fermentation, improving loaf volume, and contributing to crust browning. In brewing and beverage alcohol production, the enzyme aids in converting cereal starches into fermentable sugars that yeast can metabolize, streamlining the fermentation process. During the manufacture of syrups, amylase facilitates starch hydrolysis to produce dextrins and sugars that are further refined into sweeteners. The enzyme also plays a role in the production of processed foods such as breakfast cereals, snack foods, and convenience products where starch breakdown influences texture and digestibility. Additionally, amylase preparations may be used in fruit and vegetable processing, confectionery, and other applications where controlled starch modification is needed, typically as part of good manufacturing practices rather than as a direct ingredient consumers would identify.

Safety & Regulations

FDA

  • Notes: FDA has not explicitly listed all Aspergillus oryzae amylase preparations as affirmed GRAS in CFR listings, although enzyme preparations may be recognized as GRAS on a case by case basis.

EFSA

  • Notes: EFSA safety opinions conclude no safety concern for specific food enzyme preparations, but numeric ADI values are not typically specified.

JECFA

  • Notes: JECFA enzyme monographs list INS 1100 for alpha-amylase from Aspergillus oryzae with an acceptable status; numeric ADI not specified in the d monograph.
  • Ins Number: 1100

Sources

Comments

No comments yet. Be the first to share!