Using the low-density lipoprotein (LDL), collagen, and thrombin models, we report here that therosemary extracts (REs), either the aqueous (RE
w) or the acetonic (RE
A), all possessed manyantiglycation-related features, and the effective concentrations required were as follows: 0.1 mg/mLfor suppressing the relative electrophoretic mobility, 1.3
g/mL for anticonjugated diene induction,0.5 mg/mL for inhibition of thiobarbituric acid reactive substances production, 0.1 mg/mL for AGEs(advanced glycation end products) formation, 0.1 mg/mL to block glucose incorporation, and 0.05mg/mL as an effective anti-antithrombin III. Using high-performance liquid chromatography/massspectrometry, we identified five major constituents among eight major peaks, including rosmarinicacid, carnosol, 12-methoxycarnosic acid, carnosic acid, and methyl carnosate. In the LDL model,RE
A was proven to be more efficient than RE
w; yet, the reverse is true for the collagen and thethrombin III models, the reason of which was ascribed to the higher lipid-soluble antioxidant content(such as rosmarinic acid, carnosol, carnosic acid, 12-methoxycarnosic acid and methyl carnosate) inRE
A than in RE
w and the different surface lipid characteristics between LDL and collagen; althoughto act as anti-AGEs, both extracts were comparable. To assist the evidence, a larger 2,2-diphenyl-1-picrylhydrazyl radical scavenging capability with less total polyphenolic content was found in RE
A.We conclude that rosemary is an excellent multifunctional therapeutic herb; by looking at its potentialpotent antiglycative bioactivity, it may become a good adjuvant medicine for the prevention andtreatment of diabetic, cardiovascular, and other neurodegenerative diseases.