Qualitative Analysis of Oligomeric Procyanidins from Litchi chinensis Pericarp

Abstract

Abstract: Litchi (Litchi chinensis Sonn.) is a subtropical fruit of high commercial value; however, its pericarp results in a reduced market value. In the present study, oligomeric procyanidins from Litchi chinensis pericarp (LPOPC) were prepared and qualitatively analyzed. LPOPC were extracted with ethanol aqueous solution, purified by AB-8 macroporous resin chromatography, and fractionated by Toyopearl HW-40S resin chromatography to obtain LPOPC. LPOPC was found to comprise three fractions with different degrees of polymerization (DP). The results of FT-IR, HPLC and LC-MS analyses revealed that the major components of LPOPC were (－)-epicatechin, procyanidin A2, procyanidin A3. Highly pure monomer, dimmers and trimers were obtained through selective collection of fractions.

Key words: Litchi chinensis pericarp, procyanidins, oligomer, LC-MS

CLC Number:

TS255.36

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Qualitative Analysis of Oligomeric Procyanidins from Litchi chinensis Pericarp

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