Tii polyphenols b? okwu n'ozuzu maka ihe nd? d? na polyphenolic na akw?kw? tii, nke b? nt? nt? amorphous na-acha ?cha nke na-ad? mfe soluble na mmiri, soluble na ethanol, methanol, acetone, na ethyl acetate, na insoluble na chloroform. ?d?naya nke tii polyphenols na tii green d? oke elu, na-aza 15% ruo 30% nke oke ya. Isi ihe d? na polyphenols tii b? flavonoids, anthocyanins, flavonols, anthocyanins, phenolic acid, na phenolic acid. N'ime ha, flavanones (kar?s?a catechins) b? ihe kachas? mkpa, na-aza 60% ruo 80% nke mkpok?ta tii polyphenols, yana flavonoids na-esote, na ihe nd? ?z? phenolic nwere obere ?d?naya.