Glucono delta lactone

Glucono delta lactone


  • CAS Number: 90-80-2
  • Appearance: Solid
  • Purity:%
  • Made in: China 
  • Phone Num : +86-2150591759    
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  • Description


Glucono delta lactone (Glucone lactone) is used in food-grade with E575 index as one of the food additives in food production industries.

appearance of Glucono delta lactone

This chemical can be used as a protein coagulant in the production of some cheeses and dairy products and is also used as a factor to improve the quality of meat products.

Physical and Chemical Properties:

This substance is in the form of white crystalline powder and is odorless. Glucono delta lactone is neutral but when dissolved in water it is hydrolyzed to gluconic acid which is an acidic substance And is used to create a sour taste in food products.

The most important physical and chemical properties of this compound can be summarized in the following table:

Chemical formula C6H10O6
 Molar mass (g/mol) 178.14
Appearance Solid
taste Sweet taste
pH (aqueous solution) 3.6
Density (g/cm3 at -5 °C) 1.610
Melting Point (° C) 151-155
Solubility in water Freely soluble in water
Solubility Sparingly soluble in ethanol
Other names Gluconolactone, 1,5-Gluconolactone, D-glucono-1,5-lactone
color White
form crystalline powder
Chemical Structure Depiction chemical structure of Glucono delta lactone

Formula and Structure of Glucono Delta lactone:

GDL with the chemical formula C6H10O6 belongs to the category of organic compounds known as gluconolactone. These are polyhydroxy acids containing a gluconolactone molecule, which is characterized by a tetrahydropyran substituted by three hydroxyl groups, one ketone group, and one hydroxymethyl group.

Chemical Structure Depiction of Glucono delta lactone

Glucono Delta lactone Production Process:

Glucono 1 and 5 lactones are derived from a solution of gluconic acid at 36 to 57 ° C. Studies have shown that continuous two-stage crystallization increases productivity per unit volume, in terms of optimal energy consumption Be. In the first step, a crystal suspension containing is produced in a supersaturated solution of gluconic acid that is kept at a temperature of 65 to 75 degrees.

The second stage involves controlling cooling to a temperature of 40 to 45 ° C, followed by a period until the crystal is ready at a constant temperature. The compound may also be obtained from an aqueous solution of gluconic acid from dehydration, which involves isotropic distillation with alcohol, followed by crystallization of the alcohol-containing residue.

Applications and Uses of GDL:

  • Glucono Delta Lactone is used in Food, Beverage, Pharmaceutical, Health & Personal care products, Agriculture, Animal Feed, Poultry.
  • This compound is a multi-functional food additive used as a protein coagulant, acidifier, expander, preservative, seasoning, chelating agent, the color preserver.
  • Used as a nutritional supplement in Syrups, Tea and Coffee, Sports and Energy Drinks, Waters.
  • Glucono-Delta-Lactone is widely used as a skin buffer in Cosmetics.
  • This compound is used as a protein flocculant in the treatment of industrial wastewater containing protein.
  • It is also used as a water reducer in concrete.

As a Quality Improver in the Production of Salami and Meat Products:

GDL is used in the food industry as a separating agent that regulates food acidity. It is a lactone of gluconic D acid.

Glucono delta lactone can be used as an acidity regulator and a color enhancer in meat products. It also functions as a preservative as it inhibits the growth of bacteria by lowering the Ph. The maximum dose for use in meat products is 0.3%. This substance is used in the preparation and production of processed meats such as dried sausages and salami.

Glucono delta lactone as a quality improver in the production of meat

Safety Information:

GDL has been approved as a safe preservative by U.S. Food and Drug Administration (FDA), the European Food Safety Authority (EFSA), as well as Joint FAO/WHO Expert Committee on Food Additives (JECFA).

Glucono delta lactone is generally considered very safe. However, some may be sensitive to this compound and experience the following allergic symptoms.

First-aid measures:

General advice: Get medical advice if you feel unwell.

If inhaled: Remove from exposure, move to fresh air and seek medical advice immediately.

In case of skin contact: Wash the affected area with water, remove contaminated clothing and launder before re-use. Seek medical advice if irritation develops or persists.

In case of eye contact Flush immediately with plenty of water for 15 minutes and seek medical advice.

If swallowed: Clean mouth with water and drink afterward plenty of water.

Packing and Storage:

stored in a cool and dry place and kept away from strong light and heat.