methylpentose

meth·yl·pen·tose

(meth'il-pen'tōs),
A hexose (a 6-deoxyhexose) in which carbon-6 is part of a methyl group, for example, rhamnose, fucose.

meth·yl·pen·tose

(meth'il-pen'tōs)
A hexose (a 6-deoxyhexose) in which carbon-6 is part of a methyl group.
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stricta Isorhamnetin Kaempferol Luteolin Total flavonoids Quercetin Ascorbic acid Total phenolic acids Kaempferol Isorhamnetin Isorhamnetin-glucosyl- rhamnosyl-rhamnoside Isorhamnetin + 1 hexose + 1 methylpentose + pentose O.
Basically, chemical structure of saponins consists of a sugar moiety (glucose, galactose, glucoronic acid, xylose, rhamnose, or methylpentose) that glycosidically linked to a hydrophobic aglycone or sapogenin (Francis et al., 2002).