Disodium guanylate
Score impact
0.00
points/product
Description
E627, also known as disodium guanylate or disodium guanylate, is a food additive classified as a flavor enhancer. It is the disodium salt of guanylic acid (GMP), a nucleotide naturally present in certain foods such as mushrooms, sardines, and yeast. Industrially, it is mainly produced by bacterial fermentation of sugars (such as glucose) using strains of Corynebacterium glutamicum or Micrococcus glutamicus, followed by a purification and crystallization process. It can also be obtained by enzymatic hydrolysis of yeast RNA.
Physically, it is a white or almost white crystalline powder, odorless, with a characteristic umami taste. It is soluble in water and slightly soluble in ethanol. Its main function is to enhance umami flavor, often in synergy with monosodium glutamate (E621), allowing a reduction in the total sodium content in products.
The history of E627 dates back to the 1960s, when the flavor-enhancing properties of nucleotides were identified. It was approved in the European Union as a food additive and is listed in Regulation (EC) No 1333/2008. The European Food Safety Authority (EFSA) has evaluated its safety on several occasions, establishing an Acceptable Daily Intake (ADI) of 0-30 mg/kg body weight (expressed as guanylic acid). The World Health Organization (WHO) and the Joint FAO/WHO Expert Committee on Food Additives (JECFA) have also evaluated it, setting the same ADI.
Regarding food safety, E627 is considered safe for the general population at authorized use levels. No significant adverse effects have been identified in toxicological studies. On product labels, it must appear as 'disodium guanylate' or with its E number. Although it is a widely used additive, some consumers may choose to avoid it for personal preferences, but there is no scientific evidence supporting health risks at permitted doses.
E627 is mainly used as a flavor enhancer in a wide variety of processed foods. According to Regulation (EC) No 1333/2008, it is authorized in categories such as: soups and broths, sauces, seasonings and dressings, savory snacks, cereal-based products, prepared dishes, and processed meat and fish products.
In the Spanish market, it is commonly found in bagged potato chips, instant soups, bouillon cubes, tomato sauces, salad dressings, and some sausages. Authorized limits vary by category, but generally up to 500 mg/kg (expressed as guanylic acid) are allowed in most foods, although in some cases such as seasonings it may be quantum satis (no specific limit). Compared to the US FDA, E627 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.
The synergy with monosodium glutamate allows reducing the sodium content in products, which is an advantage from a nutritional point of view.
Documented side effects of E627 are scarce and generally mild. In toxicological studies, no significant adverse effects have been observed in animals or humans at usual consumption levels. EFSA and JECFA have concluded that E627 is not genotoxic, carcinogenic, or teratogenic.
The biological mechanism of action is simple: disodium guanylate acts on umami taste receptors on the tongue, enhancing flavor perception. No specific sensitive populations have been identified, although people with yeast allergy could react if the additive is produced from yeast RNA, but this is extremely rare. No interactions with medications are known. At very high doses (far above the ADI), it could cause mild gastrointestinal discomfort, but this is not relevant for normal consumption. The conclusion of EFSA and WHO is that E627 is safe under authorized conditions of use.
There is no evidence that it causes side effects such as headaches or allergic reactions, unlike what is sometimes associated with monosodium glutamate. Therefore, it is considered a safe additive for the general population.
- Disodium guanylate
- Disodium 5'-guanylate
- GMP disodium
- 5'-Guanylic acid disodium salt
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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