Ibicuruzwa biva mu bimera bisanzwe. Ntabwo ibara cyangwa ibara ry'ubururu. Hamwe na tekinoroji yo kuvoma ibimera ku isi, ibimera byinshi bivanwa mubwoko 300 bwibimera, nka apigenin, acacia, ni orhamnetin, epicatechin, nibindi. Birashobora gukuraho impumuro mbi kandi bikabuza ubwoko bwinshi bwimpumuro mbi vuba, nka hydrogen sulfide, thiol, aside irike ihindagurika na gaze ya amoniya.