What is meant by e631?

E631 refers to disodium guanylate, a food additive used as a flavor enhancer. It is often found in processed foods, snacks, and seasonings, where it enhances umami flavor, similar to monosodium glutamate (E621). E631 is derived from guanylic acid, which can be obtained from fish or yeast, making it important for those with dietary restrictions to check labels. It is considered safe for consumption by food safety authorities when used within regulated limits.