Oleanolic aldehyde is an antimicrobial compound used to inhibit oral bacteria. Oleanolic aldehyde inhibits Streptococcus mutans and Porphyromonas gingivalis, which are associated with dental caries and periodontal disease, with minimum inhibitory concentrations (MICs) of 488 μg/mL and 250 μg/mL, respectively[1].
References:
[1]. Rivero-Cruz J F, et al. Antimicrobial constituents of Thompson seedless raisins (Vitis vinifera) against selected oral pathogens[J]. Phytochemistry letters, 2008, 1(3): 151-154.