Polyphenol Standardization & Grades
The leaf of Mangifera indica L. is the richest part of the tree in mangiferin, a C-glycosylated xanthone, and it also carries gallotannins, flavonol glycosides and phenolic acids. Mango fruit, peel and seed kernel are different raw materials with different phenolic profiles, which is why search terms such as mango extract cover very different products. The leaf extract described here is standardized to total polyphenols, a group figure for the phenolic fraction of the leaf.
The grade is a single 10% level, so each lot is measured against the same target and the same method. Mangiferin is the companion marker that gives the extract its identity: it makes the leaf extract distinguishable from fruit-based mango products, in which it is a trace compound. The same tree is also supplied as a 10:1 ratio extract of the leaf, the Mango Leaf Extract Powder, as a general Mango Extract Powder, and as a single compound, Mangiferin 98%.
Because the grade is a group total, it should not be read as a figure for mangiferin or for any single phenolic. The 10% polyphenol level is a moderate concentration, which keeps the leaf matrix and its color in the powder.












