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The glycosides

Heterosides are condensates of monosaccharides with one or more non-carbohydrate constituents (aglycones) that can be separated by hydrolysis:

Phenolic Aglycone

Coniferin

Substance contained in conifers and in wild celery (medicinal plant)

Angelica archangelica

Salicin

Substance with anti-inflammatory properties contained in the bark of white willows

Salix alba

Flavonated aglycone

Hesperidin

Antihemorrhagic substance contained in lemons and oranges Condensate of rutinol with hesperitol aglycone

Steroidal aglycone

Digitoxin

Cardiotonic substance contained in the Foxgloves Condensate of a polysaccharide with digitoxigenin aglycone

Digitalis purpurea

Acidophenolic aglycone

The tannins

Prototype of a gallotanin

Astringent substances contained in the bark of many plants, esters of an ose with eg gallic acid (gallotanins) Formerly used in leather tanning to form leather

Tanning

Sulfurbound aglycone

Sinigrin

Substances contained in black mustard

Black mustard seeds

Cyanogenetic aglycone

Amygdalin

Substance contained in seeds of apricot, apple, pear, plum and bitter almond , already highlighted by the chemist Liebig. Hydrolysis during digestion releases very toxic $HCN$ hydrogen cyanide!

Bitter almonds