Food additive

People add things to food.

These things can change how food tastes or looks. Some help food stay fresh for a long time. Salt and sugar can do this.

Some things make food look bright. Other things make food taste sour. Some help water and oil stay mixed together. This helps make foods like ice cream.

Some things add vitamins to food. This makes the food more healthy. These are called fortifying agents.

Many lands have rules for these items. In Europe, they use special numbers. These are called E numbers.

Rules help keep our food safe to eat. It is good to know what is in our food.

People add substances to food to change how it looks or tastes. These are called food additives. Some additives help food stay fresh for a long time. Salt and sugar are old ways to do this.

Other additives help make food better in new ways.

There are many kinds of additives. Acidulants, like vinegar, make food taste sour. Colorings make food look more bright or pretty. Some additives are called emulsifiers. These help water and oil stay mixed. This is how we make ice cream or mayo.

Some additives are called fortifying agents. They add vitamins or minerals to food. This makes the food more healthy.

Rules keep these items safe. In Europe, they use E numbers to name them. In the United States, the FDA checks them. They make sure additives are safe to eat. Some things might come from the package. These are called indirect additives. Testing takes a long time. In the EU, it can take ten years to approve a new one. This includes five years of safety tests.

Food additives are substances added to food to change how it looks or tastes. They can also preserve flavor or help food stay fresh. Some people have used additives for centuries to keep food from spoiling. For example, salt, sugar, smoke, and vinegar are very old ways to preserve food. These methods help things like bacon, sweets, and wines last longer. In the late 20th century, many new additives were introduced with processed foods. These can be natural or artificial in origin.

There are many different groups of additives that do different jobs. Acidulants like citric acid or vinegar make food taste sour. Colorings are added to make food look more attractive or replace lost colors. Some additives, called emulsifiers, help water and oil stay mixed together. This is how we get smooth textures in mayonnaise, ice cream, and milk. Bulking agents like starch add size to food without changing the taste. Other additives, called humectants, help prevent food from drying out.

Rules and numbers help us identify these substances safely. In Europe, approved additives are given a special E number. For instance, acetic acid is labeled as E260 in Europe. Other countries might just use the number 260 without the letter E. In the United States, the FDA uses a label called GRAS. This means the additive is considered safe for people to eat. Australia has also used a labeling system for packaged foods since 1987.

Safety is the most important part of using additives. In the past, some additives like boric acid were used but then banned. Boric acid was used as a preservative from the 1870s until the 1920s. It was used again during World War II but finally banned in the 1950s. In the United States, a rule called the Delaney clause says no cancer-causing substances can be additives. This rule came from the Federal Food, Drug, and Cosmetic Act of 1938. Scientists must study many things, like how a substance moves through the body.

Testing new additives is a very slow and careful process. In the European Union, it can take ten years or more to approve one. This includes five years of safety testing and two years of evaluation. The European Food Safety Authority, or EFSA, helps with this work. In the United States, a company must submit a petition to the FDA. They must provide the chemical makeup and all safety reports. This ensures that the food we buy is safe for everyone to enjoy.

Food additives are substances added to food to change its characteristics. They are used to preserve flavor or enhance taste, appearance, and other sensory qualities. Some additives are used directly in the food itself. Others are known as indirect additives. These are introduced during manufacturing, packaging, storage, or transport. Examples of indirect additives include bisphenols, phthalates, and perfluoroalkyl chemicals, also known as PFCs. In 2018, the American Academy of Pediatrics called for more research on these substances. They suggested these chemicals might harm children during their development.

Additives are organized into many functional groups. Some groups overlap because one substance can perform multiple roles. For instance, salt acts as both a preservative and a flavor. Acidulants, such as citric acid or malic acid, confer a sour or acid taste. Acidity regulators control the pH of food to ensure stability. Anticaking agents prevent powders like milk powder from sticking together. Antioxidants, such as vitamin C, prevent food degradation caused by oxygen. Emulsifiers, like lecithin, allow water and oils to remain mixed in an emulsion. This process is essential for making products like mayonnaise, ice cream, and homogenized milk.

There are many other specific types of additives used in food science. Colorings replace colors lost during preparation or make food look more attractive. Color retention agents work differently by preserving a food's existing color. Bulking agents, such as starch, increase the volume of food without changing its taste. Flavor enhancers, such as monosodium glutamate, improve existing flavors. Sweeteners are added for taste, while some are used to keep calorie counts low. Stabilizers, thickening agents, and gelling agents like agar or pectin provide a firmer texture. These substances help stabilize emulsions even if they are not true emulsifiers.

To keep consumers informed, many countries use unique numbering systems. In Europe, approved additives are assigned an E number. This system was adopted by the Codex Alimentarius Commission as the International Numbering System for Food Additives, or INS. For example, acetic acid is labeled E260 in Europe. In other countries, the prefix "E" is dropped, so it is simply additive 260. Australia has used a similar labeling system since 1987. In the United States, the FDA uses the term GRAS. This stands for "Generally Recognized As Safe" and refers to additives deemed safe for human consumption.

Safety regulation is a complex and historical process. In the 1870s, boric acid was a common preservative. It was banned after World War I due to toxicity, but used again during World War II. It was finally banned in the 1950s. This led to the application of the precautionary principle. In the United States, the Delaney clause was added to the Federal Food, Drug, and Cosmetic Act of 1938. This clause states that no carcinogenic substances may be used as food additives. However, history shows challenges with this rule. In 1969, saccharin remained legal in the U.S. despite concerns, because it was later found that its effects in rats were due to unique urine chemistry.

Approving a new additive is a very long and rigorous scientific journey. In the European Union, the process can take ten years or more. This includes five years of safety testing and two years of evaluation by the European Food Safety Authority, or EFSA. Another three years are needed before EU-wide approval is granted. In the United States, companies must submit a food additive approval petition to the FDA. This petition must include the chemical composition and manufacturing details. It must also include full safety reports and methods of analysis. The FDA then reviews the quantities typically consumed and potential health impacts.

Scientists use specific dimensions to evaluate the potential toxicity of these substances. The EFSA uses a tiered approach based on four main dimensions. One dimension is toxicokinetics, which studies absorption, distribution, metabolism, and excretion. Another dimension is genotoxicity. They also study subchronic toxicity, which requires at least 90 days of data. Finally, they look at chronic toxicity, carcinogenicity, and reproductive or developmental toxicity. These strict evaluations ensure that the additives used in our food systems meet high safety standards.