Is Sodium 5'-Ribonucleotide (E635) Halal?

E635 is a blend of disodium guanylate (E627) and disodium inosinate (E631), so it carries the same doubt as its two components: both can be made by fermentation, but both have also been sourced from fish or meat. MUIS lists it as doubtful. It is very common in instant noodles and savoury snacks; a halal logo on the product is the reliable check.

Sodium 5'-ribonucleotide is a 50/50 mixture of disodium guanylate (E627) and disodium inosinate (E631), used as a flavour enhancer that synergises strongly with MSG. The doubtful classification reflects the potentially fish-derived origin of the inosinate component.

• instant noodles
• savoury snacks
• stocks and bouillons
• Asian seasoning blends

• Look for a recognised halal certification logo (MUIS, JAKIM, MUI, HMC or similar) on the packaging — certified products have had the source of this additive verified.
• Check whether the label states the origin, for example 'vegetable origin', 'plant-based' or 'soy'.
• If there is no certification and the origin is not stated, contact the manufacturer or choose a product with a halal alternative.

MSG (E621), yeast extract, disodium guanylate (E627)

E635 (Sodium 5'-Ribonucleotide) is doubtful for Muslims according to the MUIS food additive listing. Sodium 5'-ribonucleotide is a 50/50 mixture of disodium guanylate (E627) and disodium inosinate (E631), used as a flavour enhancer that synergises strongly with MSG.

Sodium 5'-ribonucleotide is a 50/50 mixture of disodium guanylate (E627) and disodium inosinate (E631), used as a flavour enhancer that synergises strongly with MSG. The doubtful classification reflects the potentially fish-derived origin of the inosinate component.

E635 is commonly found in instant noodles, savoury snacks, stocks and bouillons, and Asian seasoning blends.