Figure 3: Chromatogram (a) show mono- di- and tri- adducts of BSA+ glucose after incubation 15 days at 37°C. MALDI TOF MS spectra (b) of monomeroglucose, dimero-glucose and trimero-glucose adducts of 2α,3β,21β,22α,29α-pentahydroxy-olean-12-en-28-oic acid.