Additive · Flavour enhancer

E621 — Monosodium glutamate · page 2

E621 (Monosodium glutamate) appears in the ingredient lists of 54 products sold in Hong Kong. Function: flavour enhancer.

54products with a complete record
3%rated A or B on Nutri-Score
4.1 gsugars per 100 g (median)
1.6 gsalt per 100 g (median)

Nutri-Score

How rated products spread
A 0%B 3%C 33%D 15%E 49%

39 rated products

Median values

Per 100 g, across all 54 products
Energy347 kcal
Sugars4.1 g
Saturates3.6 g
Salt1.6 g

Status in the United States (FDA)

Listed in the FDA inventory “Substances Added to Food”, with the regulations 21 CFR 172.320, 182.1.

Technical effects listed by the FDA: flavor enhancer, nutrient supplement, ph control agent, stabilizer or thickener

The inventory is a partial list, and a listing is not an FDA approval of every use; the regulations set the permitted uses.

U.S. Food and Drug Administration, Substances Added to Food (updated 9/8/2026), public domain · CAS 142-47-2 via Wikidata (CC0)