GLUCONO-δ-LACTONE
Prepared at the 51st JECFA (1998), published in FNP 52 Add 6 (1998) superseding specifications prepared at the 30th JECFA (1986), published in
FNP 37 (1986) and republished in FNP 52 (1992). Group ADI "not specified" for glucono-delta-lactone and gluconates, excluding ferrous gluconate, established at the 51st JECFA in 1998.
SYNONYMS Glucono-delta-lactone, gluconolactone, delta-gluconolactone, GDL; INS No. 575
DEFINITION Glucono-delta-lactone is the cyclic 1,5-intramolecular ester of D-gluconic acid. In aqueous media it is hydrolyzed to an equilibrium mixture of Dgluconic acid (55-66%) and the delta- and gamma-lactones.
Chemical names D-Glucono-1,5-lactone, D-gluconic acid delta-lactone
C.A.S. number 90-80-2
Chemical formula C6H10O6
Formula weight 178.14
Assay Not less than 99.0% on the dried basis
DESCRIPTION White, odourless or nearly odourless crystals or crystalline powder
FUNCTIONAL USESAcidifier, raising agent, sequestrant
