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Glucose, dextrose, monosaccharide
sugar, C6H12O6. It is found in
honey and the juices
of many fruits; the alternative name grape sugar is derived from
the presence of glucose in grapes. It is the sugar most often produced
by hydrolysis of natural glycosides. Glucose is a normal constituent
of the blood of animals.
Glucose is a white crystalline solid, less sweet than ordinary table
sugar. Solutions of glucose rotate the plane of polarization of polarized
light to the right; hence the alternative name dextrose (Latin,
dexter, "right"). Glucose crystallizes in three different forms.
The degree of rotation of polarized light is different for each form.
Glucose is formed by the hydrolysis of many carbohydrates, including sucrose, maltose, cellulose, starch, and glycogen. Fermentation of glucose by yeast produces ethyl alcohol and carbon dioxide. Glucose is made industrially by the hydrolysis of starch under the influence of dilute acid or, more commonly, under that of enzymes. It is chiefly used as a sweetening agent in the food-processing industries. It is also used in tanning, in dye baths, and in medicine for treating dehydration and for intravenous feeding. Dextrose monohydrate is produced from high DE syrup by crystallization under controlled cooling. The classic horizontal batch crystallizer is still in use and sometime arranged in series for continuous operation. The vertical crystallizer, however has advantages in continuous operation. The anhydrous form requires crystallization above 60 oC under vacuum. Production of glucose syrups. Read more ...