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22.769 Keywords • 48.570 Synonyms • 5.298 Translations • 7.910 Pronunciations • 150.749 Cross-references

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pentoses

pentose (GB)
pentosa (ES)
pentose (F)
pentosi (I)
pentose (PO)

Designation (Greek pente = five) for monosaccharides (Single sugar) with five carbon atoms in one sugar molecule. The grape must contains in small quantities the species arabinose, rhamnose, ribose and xylose. These are at the fermentation through the yeasts not or hardly fermentable and thus in the residual sugar of the wine. In contrast, the hexoses easily fermentable. See also below sucrose,

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