NATURAL PRODUCT RESEARCH AND DEVELOPMENT ›› 2016, Vol. 28 ›› Issue (3): 400-403.doi: 10.16333/j.1001-6880.2016.3.014

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Antioxidant Activity of Proanthocyanidins from “Black Beauty” Potatoes

YANG Xiao-hui*,CAI Hui-zhen,WANG Ling,REN Bin-bin   

  1. College of Public Health,Ningxia Medical University,Yinchuan 750004,China
  • Online:2016-03-30 Published:2016-04-07

Abstract: Proanthocyandins were ultrasonically extracted from “Black Beauty” potatoes and further separated by AB-8 macroporous resin.The concentration of proanthocyandins in the purified extract was 93.59%,and the yield of proanthocyandins was determined to be 4.3%.Proanthocyandins of “Black Beauty” potatoes had strong scavenging effects against DPPH radicals,·OH radicals and O2radicals.The scavenging rates of proanthocyandins were positively related to its concentration,and did not lower than that of Vc.The scavenging effects against ·OH radicals and O2 radicals were obviously higher than that of Vc.This study provided theoretical basis for further development and utilization to proanthocyanidins from “Black Beauty” potatoes.

Key words: “Black Beauty&rdquo, potatoes;proanthocyanidins;antioxidant activity

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