Ascorbic acid
Score impact
+0.80
points/product
Description
E300, known as ascorbic acid or vitamin C, is a food additive classified as an antioxidant. It is a natural substance found in fruits and vegetables, but it is also produced industrially for use in the food industry. Ascorbic acid is mainly obtained through a fermentation process from glucose, followed by a series of chemical reactions including oxidation and lactonization. This method, developed in the 1930s, allows efficient large-scale production.
From a physicochemical point of view, ascorbic acid is a white or slightly yellow crystalline powder, soluble in water, with a characteristic acidic taste. Its main function as an additive is to prevent food oxidation, thus protecting color, flavor, and nutritional value. It acts as an electron donor, neutralizing free radicals and preventing chain reactions that deteriorate food.
The history of ascorbic acid as an additive dates back to the early 20th century, when its role in preventing scurvy was discovered. In the European Union, it was approved as a food additive after rigorous safety evaluations. The European Food Safety Authority (EFSA) and the World Health Organization (WHO) have evaluated ascorbic acid multiple times. EFSA established an Acceptable Daily Intake (ADI) of 0-15 mg/kg body weight per day for ascorbic acid as an additive, although this amount is difficult to reach since vitamin C is also consumed naturally.
The WHO, through the Joint FAO/WHO Expert Committee on Food Additives (JECFA), also considers it safe and has not set a specific ADI, classifying it as "not limited" due to its low toxicity. Overall, E300 is considered one of the safest additives, with a wide safety margin.
In food labeling, it must appear as "ascorbic acid" or "E300", and its presence is mandatory in the ingredient list. The overall safety assessment is excellent, making it an essential additive for food preservation and public health.
E300 is used in a wide variety of food categories as an antioxidant and acidity regulator.
Among the products on the Spanish market that contain it include: soft drinks (juices, nectars), meat products (sausages, frankfurters), bakery and pastry products, canned vegetables, processed fruits (jams, compotes), dairy products (yogurts, desserts), and infant foods. Regulation EC 1333/2008 establishes maximum usage limits for each category. For example, in non-alcoholic beverages the limit is 300 mg/L, in heat-treated meat products it is 500 mg/kg, and in canned fruits and vegetables it is 300 mg/kg.
Compared to the FDA, which also considers it GRAS (Generally Recognized as Safe), the limits in the US are similar, although they vary by category. In Japan, ascorbic acid is permitted without specific limits in most foods, following good manufacturing practices.
The versatility of E300 makes it an indispensable additive for maintaining the quality and safety of processed foods.
Ascorbic acid (E300) is generally well tolerated and does not present significant side effects in the amounts used as a food additive. EFSA and WHO conclude that there is no evidence of toxicity or adverse effects at usual intake levels. Human studies have shown that very high doses (above 2 grams per day) can cause gastrointestinal discomfort such as diarrhea, nausea, or abdominal cramps, but these amounts are far higher than those obtained through foods with additives.
The biological mechanism behind these effects is the ability of ascorbic acid to attract water into the intestine when consumed in excess. Sensitive populations, such as people with glucose-6-phosphate dehydrogenase (G6PD) deficiency, could theoretically experience hemolysis with very high doses, but there is no evidence that this occurs with dietary doses. Drug interactions: ascorbic acid can increase iron absorption, which could be beneficial, but it can also interfere with certain laboratory tests (such as urine glucose).
In conclusion, EFSA and WHO consider E300 safe for the general population, without the need to establish a specific ADI, and no relevant adverse effects have been documented in the context of its use as a food additive.
- Ascorbic acid
- Vitamin C
- L-ascorbic acid
- 3-oxo-L-gulofuranolactone
- Antiscorbutic vitamin
- Ascorbic acid
- Plant-derived ascorbic acid
Products in our Spanish database containing this additive
Examples found in ComerClaro Spanish product database
Product names and supermarket data may appear in Spanish.
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