Qualitative and quantitative HPLC/MS determination of proanthocyanidins in areca nut (Areca catechu).
Proanthocyanidins (PACs) in areca nut (Areca catechu L.) were analyzed by high-performance liquid chromatography (HPLC) combined with electrospray-ionization mass spectrometry (ESI-MS) and compared to grape seed extract. Under optimized conditions, the separated PACs were individually analyzed and identified on the basis of their [M+H]+ peaks. The PAC distribution in areca nut was found to be very similar to that in grape seed, but lacking any gallate conjugates. Based on reverse-phase HPLC separation, the PAC monomers (+)-catechin (CA, 1) and (-)-epicatechin (EC; 2) were successfully quantified by ESI-MS in the selected-ion-monitoring (SIM) mode, (-)-epigallocatechin (EGC; 3) being used as internal standard. Detailed quality and validation assays showed that the accuracy and repeatability (n = 8) were within 10% for each analyte.
Wu
Qingli
Q
New Use Agriculture and Natural Plant Products Program, Department of Plant Biology and Pathology, Cook College, Rutgers University, 59 Dudley Road, New Brunswick, New Jersey 08901, USA. qlwu@aesop.rutgers.edu
Yang
Yonghong
Y
Simon
James E
JE
D001114:Areca / Q000737:chemistry*; D002851:Chromatography, High Pressure Liquid; D013058:Mass Spectrometry; D015394:Molecular Structure; D044945:Proanthocyanidins / Q000737:chemistry*
D044945:Proanthocyanidins