What is Glucose Oxidase Catalase Preparation?
Glucose Oxidase Catalase Preparation is an enzymatic complex consisting of two enzymes: glucose oxidase and catalase. These enzymes are typically derived from fermentation of microorganisms such as Aspergillus niger or Penicillium species. Glucose oxidase catalyzes the oxidation of glucose to gluconic acid and hydrogen peroxide, while catalase breaks down the hydrogen peroxide into water and oxygen. Together, these enzymes create a system that effectively removes dissolved oxygen and glucose from food products.
Common Uses
This enzyme preparation is primarily used in food manufacturing as an oxygen scavenger and glucose remover. Common applications include:
- **Beverage processing**: Removing oxygen from juices, wines, and other beverages to prevent oxidative degradation and maintain color and flavor
- **Egg products**: Preventing the browning of liquid egg products and extending shelf life
- **Dairy products**: Used in some cheese and dairy applications to control oxidation
- **Baked goods**: Improving dough conditioning and product stability
- **Processed foods**: General use as a preservative to extend shelf life by reducing oxidative spoilage
By eliminating oxygen, the enzyme preparation helps prevent rancidity, color degradation, and off-flavor development, thereby extending product shelf life without chemical preservatives.
Safety Assessment
Glucose Oxidase Catalase Preparation has an established safety record in food applications. The FDA has designated this enzyme preparation as Generally Recognized as Safe (GRAS), meaning it meets the regulatory threshold for safe use in food. According to FDA records, there have been zero adverse events reported and zero recalls associated with this additive, indicating no documented safety concerns from consumer use.
The safety of enzyme preparations generally depends on the source organism, production methods, and potential allergenic properties. Since glucose oxidase and catalase are naturally occurring enzymes found in many organisms and are inactivated during digestion, they pose minimal systemic risk. The enzyme preparation is used in very small quantities—typically measured in enzyme units per kilogram of product—which further reduces any potential risk.
Some individuals with sensitivities to mold-derived products may theoretically experience reactions, though documented cases are rare. The preparation is inactivated during heating, which occurs in many food processing steps, further limiting exposure to active enzyme.
Regulatory Status
In the United States, Glucose Oxidase Catalase Preparation is approved by the FDA as a GRAS enzyme preparation and may be used in food without prior FDA approval, provided manufacturers comply with GRAS notification procedures and applicable regulations (21 CFR 184.1640 for glucose oxidase).
In the European Union, this enzyme is listed in the EU Register of Food Enzymes and is approved for use in specified food categories under Regulation (EC) No 1332/2008. It is designated as suitable for various applications including beverages, dairy, and baked goods.
Canada's Food and Drugs Act also permits the use of glucose oxidase in food processing under specified conditions.
Key Studies
Research on glucose oxidase and catalase has been conducted for decades, with studies supporting their safety and efficacy. Enzyme safety assessments conducted by the Joint FAO/WHO Expert Committee on Food Additives (JECFA) have found these enzymes to be safe for consumption at levels used in food applications.
Studies examining the digestibility and metabolic fate of these enzymes confirm they are broken down into harmless components during normal digestion. The enzymes themselves do not accumulate in tissues and pose no known toxicological concerns at food-use levels. Microbiological safety of the enzyme preparation depends on proper manufacturing practices and pathogenic organism controls, which are monitored through current Good Manufacturing Practices (cGMP).