Disodium ribonucleotides
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Disodium 5'-ribonucleotides, E number E635, are flavor enhancers which are synergistic with glutamates in creating the taste of umami. They are a mixture of disodium inosinate (IMP) and disodium guanylate (GMP) and are often used where a food already contains natural glutamates (as in meat extract) or added monosodium glutamate.
A mixture of 98% monosodium glutamate and 2% E635 has four times the flavor enhancing power of monosodium glutamate alone.[1]
