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Tetrosides

Tetrosides are condensates of four cyclic oses:

Example: Stachyose

α-D-Galactose-(1→6)-α-D-Galactose-(1→6)-α-D-Glucose(1→2)-β-D-Fructose

It is contained in beans and soybeans. Its digestion is incomplete. Chinese artichokes - traditional chinese remedies contain stachyose