Some basic knowledge about sodium gluconate

For industrial grade products, sodium gluconate is widely used as a cement retarder, which can effectively

prevent solidification and agglomeration during commercial concrete transportation. It can also be used as a steel

surface cleaning agent, glass bottle special cleaning agent, and scale and corrosion inhibitor.

For food-grade and pharmaceutical-grade products, sodium gluconate can regulate the body's acid-base balance,

ensure the normal function of nerves, effectively prevent the occurrence of low-nose syndrome, and can be used as

food additives and pharmaceutical intermediates.

Sodium gluconate has obvious coordination effect and is suitable for various formulations such as molybdenum,

silicon, phosphorus, tungsten and nitrite; The corrosion inhibition rate increases with increasing temperature.The

scale inhibition ability is strong, and it has calcium, magnesium and iron salts. Strong complexing ability; as a circulating

cooling water corrosion and scale inhibitor to achieve pollution is also a major advantage of sodium gluconate.

In the industry, generally, a substance containing glucose is used as a raw material, and gluconic acid is first

obtained from glucose by fermentation, and then neutralized by sodium hydroxide to obtain sodium gluconate, which

can also be synthesized by electrolysis and oxidation. Depending on the type of fermentation enzyme used, the

fermentation process can be divided into two clocks, one using the enzyme of Aspergillus Niger and the latter being

dehydrogenated to form lactone by means of glucose, followed by decomposition of the ester. Sodium gluconate can

also be obtained directly from glucose fermentation. At this time, the composition of the fermentation base may be:

glucose 250-350 g/L, magnesium sulfate heptahydrate 0.2-0.3 g/L, diammonium hydrogen phosphate or urea 0.4-0.5

g/L. This substrate must be sterilized. During the fermentation process, the temperature is controlled to 30-32

degrees, the pH is controlled to 5.5-6.5 with 30%-50% sodium hydroxide, and the fermentation process lasts 40-100

hours. Then, the microorganisms are removed by filtration and washing, the activated carbon is decolored, and then

filtered, concentrated, or spray dried to obtain a finished product.