C20-C40 rasvhappeid (oksüdeerunud glütserolipiidseid polümeere) ja fenoolseid ühendeid sisaldav veele ja gaasidele läbimatu aine peridermi ja endodermi rakkude kestades
A wax-like compound present in the cell walls of peridermal and endodermal cells, impermeable to gases and water. Contains C20-C40 fatty acids and phenolic compunds.
