Food-grade titanium dioxide is permitted by GB2760 in China and can be added to various foods as a colorant. What foods can food-grade titanium dioxide be added to?
Serial number
Application Range of Food-grade Titanium Dioxide in Food
One
Meat products, poultry products.
Two
Marinated fish and related products (fish sausage, fish balls), mollusks, crustaceans and spines.
Three
Dairy products, flavor milk, fermented milk (chocolate milk, cocoa milk drinks, yogurt, whey drinks).
Four
Cream, milk powder, refined milk and its analogues, ice cream powder, cheese, whey products, etc.
Five
Emulsifier (product fat content less than 80%).
Six
Fruits, vegetables and their dried products (mushrooms, fungi), algae, etc.
Seven
Vegetables in bottled, bottled or boiled bags.
Eight
Candy, icing, solid drinks, etc.
Nine
Grain and starch products, bread, dough, noodles, etc.
Ten
Pre-cooked or processed rice products, such as rice cakes.
Eleven
Soybean products, such as soybean paste.
Twelve
Egg products (eggs, preserved eggs, etc.).
Thirteen
Sweetener, salad.
Fourteen
Condiments, soup products, etc.
Fifteen
Seasoning sauce and its products.
Sixteen
Yeast products.
Seventeen
Protein products.
Eighteen
Medical nutrition.
Nineteen
Weight loss products.
Twenty
Food nutrients, health products.
Twenty-one
Soda water, beer and malt drinks, flavor drinks, sports, energy drinks and others.
Twenty-two
Wine, cider, pear wine, honey wine.
Twenty-three
Distilled alcoholic drinks (alcoholic content higher than 15%) and alcoholic beverages.
Twenty-four
Ready-to-eat products.
Twenty-five
Other categories.
Food-grade titanium dioxide is mainly used in meat products, salted fish products, candy, baked food, cheese, sugar coatings, seasonings and food supplements. If used in conjunction with other pigments, soft colours can be produced. Because titanium dioxide is insoluble in water, it should be dissolved in a medium, such as edible oil, propylene glycol, syrup or water solution added with thickener, before further operation.
Although food-grade titanium dioxide is used in many food industries, many countries require its purity to be over 99%. Because titanium dioxide is insoluble in water, hydrochloric acid, dilute sulfuric acid and organic solvents, it hardly reacts with food ingredients. In 1969, the FAO/WHO Joint Expert Committee on Food Additives and Pollutants (JECFA, 1970) did not specify the ADI (daily allowable intake) value of food-grade titanium dioxide. It may be considered that titanium dioxide is non-toxic. JECFA draws this conclusion on the basis of discussing the safety of food-grade titanium dioxide, including its absorption, distribution, metabolism and toxicological experiments. JECFA concludes that: "Food-grade titanium dioxide is insoluble compound. Several species including human are studied to show its uptake. Titanium dioxide has neither a large amount of absorption nor deposition of tissue. So far, there is no conclusion about soluble titanium compounds. Valuable records show that the absorption of small amounts of titanium ions has no toxic effect, so it is not necessary to prescribe daily human intake. Because of the insolubility and chemical inertia of food-grade titanium dioxide, the intake in food is regulated only in GMP.