The hydrolysis product of maltose is glucose.
1, Glucose Physical Properties
Traditional glucose mainly refers to α-D-glucose, a white crystalline solid with a melting point of 146?C. When this glucose molecule is crystallized with cold water, glucose monohydrate is formed, with a molecular formula of C?H?O?, and a melting point of 86?C.
It is extremely soluble in water, only slightly Soluble in ethanol, insoluble in ether. It has a sweet flavor, and its sweetness is about three-fourths that of sucrose. It has optical activity, natural glucose in aqueous solution spin to the right, belongs to the "dextrose".
2, glucose preparation
Glucose can be prepared by hydrolysis of starch, in which the traditional method of enzyme-acid method, that is, the use of acid after the addition of starch pressurized saccharification, the use of acid hydrolysis of the preparation, improved by the use of enzyme liquefaction, enzyme-acid saccharification of the new process.
In recent years, continuous jet technology in starch liquefaction, saccharification has also been applied, the birth of a new preparation method that is double enzyme method, which includes liquefaction and saccharification of two processes. Liquefaction includes the physical process of starch pasting to hard paste starch dextrinization chemical process, saccharification is the dextrin completely hydrolyzed to glucose.
3, glucose absorption
Substances in the body in addition to the decomposition of glucose in the small intestine, but also accompanied by sodium ion absorption, glomerular filtrate glucose in the proximal tubule accompanied by sodium ion reabsorption, more than the threshold of renal glucose will be discharged from the body with the urine.
Glucose absorbed in the intestine is partly stored in the form of glycogen in the liver and muscle, and blood glucose enters tissues and cells mainly by easy diffusion. In humans, skeletal muscle is the primary site of insulin-mediated glucose uptake.
Glucose Application Fields
1, Pharmaceutical field
5% glucose solution and 10% glucose solution are commonly used as rehydration and therapeutic solutions in clinical practice, and hypertonic glucose in different concentrations is a commonly used source of energy in clinical treatment.
Dextrose can be used as an oral solution in the medical industry, and it can be administered orally as 10% dextrose solution before gynecological laparoscopic surgery, which not only provides better comfort to the patients, but also promotes the recovery of gastrointestinal function after the surgery.
2, food field
Glucose can also be transformed into glucosamine through chemical reaction, glucosamine is an important component of human articular cartilage matrix and synovial fluid proteoglycans, which can be ingested into the human body as a kind of health food to improve the metabolism of articular cartilage, and to promote the health of bone and joint.
3, industrial field
Glucose can also be used as a raw material for the preparation of sorbitol, i.e., glucose aqueous solution of glucose in the role of the catalyst, through the glucose hydrogenation reaction to prepare sorbitol.
4, the field of sports
Glucose is the main source of energy in the organism, through the research proved that glucose can improve the human body's ability to exercise and improve the human body's exercise fatigue, and it can be ingested as an oral fluid in sports to relieve fatigue.
5, animal feed
Glucose can also be used as fish feed, you can use 30% of the ratio of configuration of grass carp feed, and first of all, for corn starch as feed, glucose feed is more conducive to the growth of grass carp.