Food additive

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Food additives are substances added to food to preserve it, or to improve its flavour and appearance. Some additives have been used for centuries; for example, when preserving food by pickling (with vinegar), salting, as with bacon, or using sulfur dioxide as is common in wine. However, with the advent of processed foods in the second half of the 20th century, many more additives have begun to be used, of both natural and artificial origin.

Numbering

To regulate these additives, and inform consumers, each additive is assigned a unique number. Initially these were the "E numbers" used in Europe for all approved additives. However, the numbering scheme has been adopted and extended by the Codex Alimentarius Committee to internationally identify all additives, regardless of whether they are approved for use.

E numbers are all written with an "E" in front, but other countries use only the number whether the additive is approved in Europe or not. For example, acetic acid is additive 260, so it is written as E260 on products sold in Europe. Additive 103, alkanet, is not approved for use in Europe and so does not have an E number, although it is approved for use in Australia and New Zealand.

See the list of food additives for a complete list of all of the numbers.

Categories

Food additives can be divided into several different groups, although there is some overlap between them.

Acids 
Food acids are added to make the flavour of foods "sharper", and also act as preservatives and antioxidants. Common food acids include vinegar, citric acid, tartaric acid, malic acid, fumaric acid, lactic acid.
Acidity regulators 
Acidity regulators are used to change or otherwise control the acidity and alkalinity of foods.
Anticaking agents 
Anticaking agents keep powders such as milk powder flowing freely, rather than sticking together in lumps.
Antifoaming agents 
Antifoaming agents reduce or prevent foaming in foods.
Antioxidants 
Antioxidants such as vitamin C act as preservatives by inhibiting the effects of oxygen on food, and are generally beneficial for your health.
Bulking agents 
Bulking agents are additives used to increase to bulk of a food without affecting its nutritional value.
Food coloring 
Food colorings are added to food to replace colours lost during preparation, or to make food look more attractive.
Colour retention agents 
In contrast to colourings, colour retention agents are used to preserve a food's existing colour.
Emulsifiers 
Emulsifiers allow water and oils to remain mixed together in an emulsion, as in milk, mayonnaise and ice cream.
Flavours 
Flavours are additives that give food a particular taste or smell, and may be derived from natural ingredients, or created articially.
Flavour enhancers 
Flavour enhancers enhance a food's existing flavours.
Flour treatment agents 
Flour treatment agents are added to flour to improve its colour or its use in baking.
Humectants 
Humectants prevent foods from drying out.
Preservatives 
Preservatives prevent or inhibit spoilage of food due to fungi, bacteria and other microorganisms.
Propellants 
Propellants are any substances used to expel food from its container.
Stabilizers 
Stabilizers, thickeners and gelling agents work with emulsifiers to give foods a good texture, like Agar, or the pectin used in jam.
Sweeteners 
Sweeteners are added to foods for flavoring. Other sweeteners than sugar are added to lower the food energys in food, or because they have beneficial effects for diabetes mellitus and tooth decay.

External links

fr:Additif alimentaire he:תוסף מזון lb:Liewensmttelzoustz nl:Additieven ja:食品添加物 fi:Lisaine uk:Харчові добавки

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