Glucono-Delta-Lactone (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 .
Specifications:
ITEM | STANDARD |
IDENTIFICATION | POSITIVE |
GDL | 99-100.5% |
CHARACTERISTICS | WHITE CRYSTALLINE POWDER, ALMOST ODORLESS |
SOLUBILITY | EASILY SOLUBLE IN WATER, HARD SOLUBLE IN ETHANOL |
MELTING POINT | 152℃±2 |
MOISTURE | =<0.5% |
REDUCING SUBSTANCES (AS D-GLUCOSE) | =<0.5% |
AS | =<1PPM |
HEAVY METAL | =<10PPM |
LEAD | =<2PPM |
MERCURY | =<0.1PPM |
CADMIUM | =<2PPM |
CALCIUM | =<0.05% |
CHLORIDE | =<0.05% |
SULPHATES | =<0.02% |
LOSS ON DRYING | =<1% |
PH | 1.5~1.8 |
AEROBE | 50/G MAX |
YEAST | 10/G MAX |
MOLD | 10/G MAX |
E.COLI | NOT AVAILABLE AT 30G |
SALMONELLA | NOT AVAILABLE AT 25G |
Applications
1. Used as protein coagulant in the production of tofu -- tofu coagulant
2. Used as material in production of baking powder -- leavening agent, acidulant
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