View source for Glucono delta-lactone




{{Chembox new
|ImageFile=Glucono-delta-lactone-2D-skeletal.png
|ImageSize=
|IUPACName=3,4,5-trihydroxy-6-(hydroxymethyl)- 2-tetrahydropyranone
|OtherNames=
|Section1= {{Chembox Identifiers
|  CASNo=90-80-2
|  PubChem=736
|  SMILES=C(C1C(C(C(C(=O)O1)O)O)O)O
  }}
|Section2= {{Chembox Properties
|  Formula=C<sub>6</sub>H<sub>10</sub>O<sub>6</sub>
|  MolarMass=178.14
|  Appearance=
|  Density=
|  MeltingPt=
|  BoilingPt=
|  Solubility=
  }}
|Section3= {{Chembox Hazards
|  MainHazards=
|  FlashPt=
|  Autoignition=
  }}
}}
'''Glucono delta-lactone''' ('''GDL''') is a [[nature|naturally]]-occurring [[food additive]] used as a [[sequestrant]], an [[acid]]ifier, or a [[curing]], [[pickling]], or [[leavening]] agent.  It is a cyclic [[ester]] of <small>D</small>-[[gluconic acid]].  Pure GDL is a [[white]] [[odor]]less [[crystal]]line powder.

Glucono-delta-[[lactone]], upon addition to water readily forms an
equilibrium mixture of the lactone GDL and [[gluconic acid]].

GDL is commonly found in [[honey]], [[fruit]] [[juice]]s, and [[wine]].  Being acidic, it adds a tangy [[taste]] to [[food]]s, though it has roughly a third of the [[sour]]ness of [[citric acid]].  It is metabolized to [[glucose]]; one [[gram]] of GDL is equivalent to one gram of [[sugar]].

Merck '''13''', 4469
Beil. '''18''', V, 5, 11

[[Category:Food acidity regulators]]
[[Category:Curing agents]]
[[Category:Lactones]]
[[Category:Pickling agents]]
[[Category:Leavening agents]]
[[Category:Sequestrants]]

[[de:Glucono-1,5-lacton]]
[[ja:グルコノラクトン]]
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