Analysis of A-Type and B-Type Highly Polymeric Proanthocyanidins and Their Biological Activities as Nutraceuticals

Table 1

Molecular sizes of two different fractions of highly polymeric proanthocyanidins isolated individually from food sources of seed shells of Japanese horse chestnut, blueberry, and cranberry as determined by gel permeation HPLC.

	Fraction	Retention time (min)	Mp
Seed shells of Japanese horse chestnut	AF2	3.14	14800
	AF3	2.90	30900
Blueberry fruit	BF2	2.96	25500
	BF3	2.81	40800
Cranberry fruit	CF2	3.07	20300
	CF3	2.87	33900

The fractions of F2 and F3 were individually obtained by column chromatography on Sephadex LH-20 from seed shells of Japanese horse chestnut (AF2 and AF3), and fruits of blueberry (BF2 and BF3) and cranberry (CF2 and CF3).