I-polyphenols yeti ligama eliqhelekileyo lezinto ze-polyphenolic kumagqabi eti, eziziimpuphu ezimhlophe ze-amorphous ezinyibilika lula emanzini, zinyibilika kwi-ethanol, i-methanol, i-acetone, kunye ne-ethyl acetate, kunye ne-insoluble kwi-chloroform. Umxholo weti ye-polyphenols kwi-green tea iphezulu, ibala i-15% ukuya kwi-30% yobunzima bayo. Amacandelo aphambili eti ye-polyphenols yi-flavonoids, i-anthocyanins, i-flavonols, i-anthocyanins, i-phenolic acids, kunye ne-phenolic acids. Phakathi kwazo, i-flavanones (ingakumbi i-catechins) ibaluleke kakhulu, i-akhawunti ye-60% ukuya kwi-80% ye-polyphenols yeti iyonke, ilandelwa yi-flavonoids, kunye nezinye izinto ze-phenolic zinomxholo ophantsi.