Disodium 5'-ribonucleotides
Score impact
-0.10
points/product
Description
The food additive E635, known as disodium 5'-ribonucleotides, is a flavor enhancer belonging to the group of ribonucleotides. It is a mixture of disodium salts of two nucleotides: disodium guanylate (E627) and disodium inosinate (E631), in varying proportions. Its main function is to enhance the umami taste, providing a feeling of fullness and roundness, similar to monosodium glutamate (E621).
Industrially, E635 is obtained by microbial fermentation using strains of Corynebacterium glutamicum or Bacillus subtilis, which produce RNA. This RNA is extracted and enzymatically hydrolyzed to release the nucleotides, which are then purified and converted into their disodium salts. It can also be obtained by hydrolysis of yeasts or by chemical synthesis, although the fermentation route is the most common.
Physicochemically, E635 is a white or slightly yellow powder, odorless, with a characteristic umami taste. It is soluble in water and slightly soluble in ethanol. Its stability is good under normal storage conditions, but it can degrade in the presence of phosphatase enzymes present in some foods.
The history of E635 dates back to the 1960s, when it was discovered that ribonucleotides enhanced umami taste. It was approved as a food additive in the European Union in 1995, following evaluation by EFSA. The European Food Safety Authority (EFSA) has reassessed its safety several times, most recently in 2019, establishing an Acceptable Daily Intake (ADI) of 120 mg/kg body weight per day, based on chronic toxicity and carcinogenicity studies. WHO, through the Joint FAO/WHO Expert Committee on Food Additives (JECFA), has also evaluated E635 and established the same ADI.
Regarding food safety, E635 is considered safe for the general population at the amounts used. No significant adverse effects in humans have been reported at normal consumption levels. However, some people may experience sensitivity similar to that of glutamate, with symptoms such as headache or nausea, although this is not well documented. Labeling in the EU must include the name of the additive or its E number, and in some cases, "flavor enhancer: disodium 5'-ribonucleotides" is specified.
E635 is mainly used as a flavor enhancer in a wide variety of processed foods. In the European Union, it is authorized in numerous food categories according to Regulation (EC) 1333/2008. The most common uses include: appetizers and snacks (potato chips, nachos, breadsticks), soups and broths (instant and packaged), sauces (ketchup, mayonnaise, pasta sauces), processed meat products (sausages, frankfurters), prepared dishes (frozen meals, pizzas), and seasonings and dressings.
In the Spanish market, it is found in brands such as Lays, Knorr, Gallina Blanca, Hacendado, and in products from supermarkets like Carrefour or Mercadona. Authorized limits vary by category, but generally up to 500 mg/kg in snacks and up to 1000 mg/kg in soups and sauces. Compared to the US FDA, E635 is classified as GRAS (Generally Recognized as Safe) and its use has no specific limits, although good manufacturing practices are recommended. In Japan, it is also approved and widely used in products such as instant noodles and seasonings.
Documented adverse effects of E635 are rare and generally mild. EFSA and JECFA have assessed its safety and conclude that there is no evidence of significant toxicity in humans at current consumption levels. The ADI of 120 mg/kg/day is considered safe for life. Some animal studies have shown an increased incidence of tumors in rats at very high doses (above 1000 mg/kg/day), but these findings are not considered relevant to humans due to metabolic differences and because the doses are far higher than typical human intake.
In humans, isolated cases of allergic reactions or sensitivity have been reported, such as headache, nausea, or palpitations, but no controlled studies confirm a causal relationship. People with gout or hyperuricemia should exercise caution, as ribonucleotides can be metabolized to uric acid, although in dietary amounts the effect is minimal. No interactions with medications are known.
In conclusion, EFSA and WHO consider E635 safe for the general population, with no significant side effects at the amounts used in foods.
- Sodium ribonucleotides
- Disodium ribonucleotides
- Mixture of sodium inosinate and guanylate
- Flavor enhancer
- Disodium salt of ribonucleotides
- Nucleotide mixture
- Umami flavor enhancer
- Sodium guanylate and inosinate
- Food grade ribonucleotides
Classification:
Statistics
24
total views
Something wrong?
If you notice incorrect or incomplete information, help us improve the platform.