Figure 1: Mean antiglycation activity (with standard deviation) of two iridoids, deacetylasperulosidic acid (DAA) and loganic acid, and aminoguanidine (positive control) at 1.25 mM, 2.5 mM, and 5 mM in the bovine serum albumin/fructose/glucose antiglycation assay. Inhibition of glycation (%) was determined by comparing fluorescence intensities (360 nm excitation, 460 nm emission) of samples and positive control to those of reference blanks.