71 / 172
3/11/2015
3
Background
Phenolics:
•
Widely distributed
•
Dietary Antioxidants
•
Core to bioactivity of many supplements
Challenges of Phenolic Analysis
•
Multiple Analytes – > 8000 known compounds
•
Lack of Standards – Many compounds are not
available as commercial standards.
d d
i
d f
i
i
•
Stan ar s are expens ve an o uncerta n pur ty
•
Many are unstable, particularly for quantitative
analysis