What is Starch, Food, Modified: Oxidized Starches?
Oxidized starches are modified food starches produced by treating native starch with oxidizing agents such as hydrogen peroxide, sodium hypochlorite, or potassium permanganate. This chemical modification introduces carbonyl and carboxyl groups into the starch polymer, altering its physical and chemical properties. The resulting product is a starch with improved functional characteristics for food manufacturing applications.
The CAS number 65996-62-5 identifies this category of oxidized starches used in food production. Unlike native starches, oxidized variants have reduced viscosity, improved clarity, and enhanced stability under various processing conditions, making them valuable in industrial food applications.
Common Uses
Oxidized starches function primarily as stabilizers and thickeners in food products. Common applications include:
- Dairy products (yogurts, puddings, sour cream)
- Sauces and gravies
- Soups and broths
- Processed meat products
- Baked goods and fillings
- Confectionery items
- Salad dressings
These starches improve product stability, prevent separation, enhance mouthfeel, and maintain consistent texture during storage and handling. Their reduced viscosity compared to native starches allows manufacturers to achieve desired thickness at lower concentrations.
Safety Assessment
Oxidized starches have been subjected to safety evaluation by food regulatory agencies. According to FDA records, there have been zero reported adverse events and zero recalls associated with oxidized starches in the United States food supply. This extensive history of use without reported safety incidents suggests a favorable safety profile.
The European Food Safety Authority (EFSA) has also evaluated modified starches, including oxidized varieties. These evaluations have generally concluded that modified starches are safe for human consumption at typical usage levels in food applications.
Starch is a naturally occurring carbohydrate found in plants. Modified starches, including oxidized varieties, are derived from food-grade starch sources and undergo processing that is widely recognized as safe in food manufacturing. The oxidation process itself is a well-established food technology that does not produce toxic byproducts when properly controlled.
Digestibility of oxidized starches is comparable to native starches. The human digestive system processes these modified carbohydrates similarly to regular starch, breaking them down into glucose for energy metabolism.
Regulatory Status
Oxidized starches are not currently listed on the FDA's Generally Recognized as Safe (GRAS) list as a specific ingredient category. However, they are permitted for use in food under FDA regulations. Individual oxidized starch products may have received GRAS determinations through the FDA's notification program, and many have been safely used in foods for decades.
In the European Union, modified starches including oxidized varieties are authorized food additives listed in Annex II of Regulation (EC) No 1333/2008. They are assigned the E number E1404 when used as food additives in EU member states.
Canada's Food and Drug Regulations permit the use of modified starches, including oxidized starches, as food additives within specified limitations.
Key Studies
Modified starch safety has been the subject of numerous scientific evaluations. Research demonstrates that oxidized starches are readily digestible and do not accumulate in body tissues. Toxicological studies have shown no significant adverse effects at usage levels far exceeding those found in typical food applications.
The long history of safe use in the global food supply, combined with absence of adverse event reports and regulatory approvals in major food markets, provides substantial evidence supporting the safety of oxidized starches in food applications.