Melibiose, whose term in the official IUPAC nomenclature is: (2R, 3R, 4S, 5S, 6R) -6 – [[(2S, 3R, 4S, 5R, 6R) -3,4,5-trihydroxy-6- (hydroxymethyl) oxan-2-yl] oxymethyl] oxan-2,3,4,5-tetrol is a disaccharide with brute formula: C12H22O11.
Melibiose consists of a glucose molecule and a galactose molecule; this disaccharide is obtained by the action of the invertase enzyme on raffinose and by partial hydrolysis of raffinose.
It appears as a white, amorphous powder with reducing properties, dextrorotation and a sweetening power.
In addition, the enzyme melibiasis, found in some yeasts, breaks down melibiose into glucose and galactose.
Melibiose is hydrolyzed into glucose and galactose by the enzyme alpha-galactosidase and by MEL1 of Saccharomyces pastorianus.
Unlike the latter, melibiose cannot be hydrolyzed by Saccharomyces cerevisiae, which distinguishes the two types of yeast of the genus Saccharomyces.
Warning: The information given is not medical advice and may not be accurate. The contents are for illustrative purposes only and do not replace medical advice.