Glükoosi leidub looduses nii vabalt kui ka polüsahhariidide (sahharoosi, glükogeeni, tärklise, tselluloosi ja dekstraani) koostises. Vaba glükoosi on palju viinamarjades, mees, veres ja viljades. Glükoos osaleb ainevahetuses, ta annab organismile energiat.
a white crystalline monosaccharide sugar that has several optically active forms, the most abundant being dextrose: a major energy source in metabolism
A monosaccharide, glucose occurs in uncombined form in fruit juices and in blood and cellular fluids, and in combination in polysaccharides (e.g. cellulose, starch, glycogen), oligosaccharides (e.g. sucrose), and glycosides.
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The terms glucose, sugar, dextrose, and d-dextrose, are not interchangeable; for example, dextrose and d-dextrose are not used to identify blood glucose or sugar.
