Synonyms: 1,5-Gluconolactone; D-Glucono-1,5-lactone; D-Aldonolactone; D-Glucono-delta-lactone; Gluconic acid lactone; Gluconic lactone; Glucono delta-lactone; GDL
Molecular Formula: C6H10O6
Molecular Weight: 178.14
CAS Number: 90-80-2
EINECS: 202-016-5
Glucono delta-lactone is a lactone of D-gluconic acid. Pure GDL is a white odorless crystalline powder.
GDL is commonly found in honey, fruit juices, 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. Glucono delta-lactone is metabolized to glucose; one gram of GDL yields roughly the same amount of metabolic energy as one gram of sugar.
Upon addition to water, GDL is partially hydrolysed to gluconic acid, with the balance between the lactone form and the acid form established as a chemical equilibrium. The rate of hydrolysis of GDL is increased by heat and high pH. GDL may also be useful in controlling termites by weakening their immune system.
Specification
Product name | Glucono delta-lactone |
Test Items | Specifications (FCCIV) |
Appearance | Colorless crystals or powder |
Identification | Accod with the test |
Assay | 99.0-100.5% |
Reducing substances | 0.5% Max |
Heavy metals | 20ppm Max |
Arsenic | 3ppm Max |
Lead | 10ppm Max |
Calcium | 0.30% Max |
Chloride | 0.02% Max |
Sulfate | 0.03% Max |
Performance and usage: The product has fresh preservation and antiseptic actions. It can be used to processing bean products (such as, bean curd), meat products, juice beverage, yeast powder, etc. and can be used for the fresh preservation of fishes ad shrimps.
Package: Paper-plastic compounds bags, 25kgs net each.
Transportation: Handle with care in order to avoid damaging the package; protect them from sunshine or rain. This product is a non-dangerous product and can be transported as a common chemical product.
Storage: Keep in shaded, cool and air places. The shelf time is 2 years
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