molecular formula: C6H10O6
molecular weight: 178.14
Melting point: 160 °C (dec.)(lit.)
refractive index: 63.5 ° (C=10, H2O)
specific rotation: 65 º (c=1,H2O)
storage condition: Refrigerator
soluble: 500 g/L (20 ºC)
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Glucono Delta Lactone
White crystal or crystalline powder
160 °C (dec.)(lit.)
Glucono delta-lactone (GDL), also known as gluconolactone, is a food additive with the
E number E575 used as asequestrant, an acidifier, or a curing, pickling, or leavening agent.
It is a lactone (cyclic ester) of D-gluconic acid. Pure GDL is a white odorless crystalline powder.
GDL is commonly found in honey, fruit juices, personal lubricants, and wine . GDL is neutral,
but hydrolyses in water to gluconic acid which is acidic, adding a tangy taste to foods, though
it has roughly a third of the sourness of citric acid. It is metabolized to glucose; one gram of GDL
yields roughly the same amount of metabolicenergy as one gram of sugar.