Glucono-delta-Lactone
[90-80-2]
C6H10O6
E575
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More information about Glucono-delta-Lactone:
General information
Glucono-1,5-Lactone or GdL is a neutral cyclic ester of gluconic acid, produced with the acid by fermentation of glucose. It is separated from the acid by crystallisation.
GdL is a fine, white crystalline powder, freely soluble in water. It is practically odourless and has a slightly sweet taste. Non toxic, it is completely metabolised in the body like a carbohydrate.
When added into an aqueous solution, GdL rapidly dissolves, and subsequently slowly hydrolyses to gluconic acid, thus producing a gentle acidification in the same way as lactic acid-producing bacteria. In solution both gluconic acid and GdL are always in balance. The equivalent point and the rate of transformation are related to concentration, temperature and pH-value.
Two properties set GdL apart from other common acids and are the base of its application range:
- Through its slow hydrolysis to gluconic acid, it ensures a progressive and continuous decrease of pH to equilibrium. So it is used as a slow release acidifier.
- During its hydrolysis, the initial sweet taste of GdL becomes only slightly acidic, making the final flavour of an aqueous solution of GdL much less tart than the one of other acidifiers.
Specifications
Jungbunzlauer glucono-delta-lactone is supplied in accordance with the latest requirements of the United States Pharmacopeia (USP), the Food Chemicals Codex (FCC) and of Commission Regulation (EU) No 231/2012.
GdL is available as food grade and Personal Care grade.
For food grade we offer a granular and powder material and for Personal Care grade we offer a granular material. Special granulations are available upon request.
Jungbunzlauer glucono-delta-lactone is available in 25 kg net polyethylene (LDPE) bags or in 1000 kg net polypropylene big bags.
Properties
- Odourless
- Non-toxic
Main functions
- Controlled release acidulant
- Mild acidulant
- Curing accelerator
- Leavening agent
- Chelating agent
- Preservative agent enhancer
Applications
-
Bakery
Functions:
- Provides a progressive pH decrease
- Acts as raising agent for baked goods
- Can prolong shelf life of baked goods
-
Cereals | Snacks
Functions:
- Provides a progressive pH decrease
- Acts as raising agent for baked goods
- Can prolong shelf life of baked goods
-
Confectionery
Functions:
- Provides a progressive pH decrease
- Imparts a mild acidic taste
- Acts as a firming agent in alginate or pectin stabilised fruit preparations
-
Dairy
Functions:
- Provides a progressive pH decrease
- Provides a well controlled slow acidification for the coagulation of dairy proteins
- Acts as mild acidifier and coagulant for feta, white cheese and paneer processing
- Acts as a firming agent in alginate or pectin stabilised fruit preparations
- Dairy alternatives
-
Desserts | Ice cream
Functions:
- Provides a progressive pH decrease
- Imparts a mild acidic taste
- Acts as a firming agent in alginate or pectin stabilised fruit preparations
-
Flavours
Functions:
- Provides a progressive pH decrease
- Imparts a mild acidic taste
-
Fruit preparations | Sweet spreads
Functions:
- Provides a progressive pH decrease
- Imparts a mild acidic taste
- Acts as a firming agent in alginate or pectin stabilised fruit preparations
-
Fruits | Vegetables
Functions:
- Provides a progressive pH decrease
- Imparts a mild acidic taste
- Acts as a firming agent in alginate or pectin stabilised fruit preparations
-
Meat | Seafood
Functions:
- Provides a progressive pH decrease
- Provides a well controlled slow acidification for the coagulation of dairy proteins
- Provides direct acifidication of processed meat products
- Improves the colour of meat products
- Inhibits growth of pathogens and undesirable non-pathogenic microorganisms
- Meat alternatives
-
Plant-based products
Functions:
- Provides a progressive pH decrease
- Imparts a mild acidic taste
- Provides progressive acidification to enable coagulation of soymilk proteins
-
Ready meals | Instant food
Functions:
- Provides a progressive pH decrease
- Imparts a mild acidic taste
-
Sauces | Dressings | Seasonings
Functions:
- Provides a progressive pH decrease
- Imparts a mild acidic taste
-
Instant drinks | Syrups
Functions:
- Plant-based
- Sports drinks | Energy drinks
- Tea | Coffee | RTD
- Waters
-
OTC | Food supplements
Functions:
- Acts as intermediate for synthesis of mineral gluconates und chlorhexidine gluconate
- Acts as starting material for chlorhexidine gluconate
- Used as an intermediate for the synthesis of API (e.g. SGLT2 inhibitor)
- Pharmaceutical products
-
Deodorants
Functions:
- Replaces chelating agents such as EDTA
- Forms a slow release preservative with sodium benzoate
-
Hair care
Functions:
- Replaces chelating agents such as EDTA
- Forms a slow release preservative with sodium benzoate
-
Oral care
Functions:
- Replaces chelating agents such as EDTA
- Forms a slow release preservative with sodium benzoate
-
Skin care
Functions:
- Replaces chelating agents such as EDTA
- Promotes skin renewal (exfoliation) under acidic conditions (be aware of the regulatory guidance for the use of alpha hydroxy acids)
- Improves skin moisture
- Forms a slow release preservative with sodium benzoate
-
Construction
Functions:
- Acts as set retarder for gypsum plaster
-
Fine chemicals
Functions:
- Inhibits termites’ immunity against pathogens and protects wood
- Acidifying agent
- Buffering agent
- Chelating agent
Legal Aspects
In Europe, GdL is listed as a generally permitted food additive (E575) and may be added to all foodstuffs, following the "quantum satis" principle, as long as no special regulation restricts the use. The US Food and Drug Administration (FDA) assigned GdL the “generally recognised as safe” (GRAS) status and permitted its use in food as curing or pickling agent, leavening agent, sequestrant, or pH control agent without limitation other than current good manufacturing practice (21 CFR Ch. I §184.1318).
Documents
Downloads: Glucono-delta-Lactone
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