Naringenin.

Naringenin is a glycoside of naringin , a dihydroflavonoid , which is a white needle - like crystal ( methanol ) at room temperature , soluble in ethanol , ether and benzene , and almost insoluble in water . T he m agnesium h ydrochloride p owder r eaction i s c herry r ed, t he s odium t etrahydroboron r eaction i s r eddish- p urple, a nd t he M olish r eaction i s n egative. In n ature, it i s m ainly d erived f rom t he c herry b lossom ( P runusyedoensis M ate. ) of the R osaceae family. F lower C - b ud, A macardi- u moccidentaleL. T he k ernel s hell o f t he f ruit. T he p arent n uclear s tructure o f f lavonoids i s s imilar, a nd m ost o f t he c omponents a re n ot i deal i n f at a nd w ater s olubility, a nd t he b ioavailability i s l ow. By modifying its structure and introducing fat - soluble or water - soluble groups , its fat - soluble or water - soluble groups can be improved , thereby improving its bioavailability .

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