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Food science and biotechnology v.14 no.2 = no.62, 2005년, pp.177 - 180   피인용횟수: 8

Antioxidant Activities of Colored Sweet Potato Cultivars by Plant Parts

Boo, Hee-Ock    (Biotechnology Industrialization Center, Dongshin University   ); Chon, Sang-Uk    (Biotechnology Industrialization Center, Dongshin University   ); Kim, Sun-Min    (Biotechnology Industrialization Center, Dongshin University   ); Pyo, Byung-Sik    (Biotechnology Industrialization Center, Dongshin University  );
  • 초록

    Antioxidant activity of crude extracts from colored sweet potato cultivars by plant parts such as root, stem and leaf was evaluated. The highest TBARS values were obtained from root samples of sweet patato, and followed by stems and leaves, indicating that leaf sample showed the strongest antioxidant activity. Sweet potato cultivars with yellow flesh and leaf part exhibited strong antioxidant activities. Antioxidant activities of leaf and stem extracts were maintained for 21 days and were a little lower than that of BHT. The DPPH radical scavenging activity was the highest in "Sinhwangmi" leaf, and followed by "Jami" root. Chlorogenic acid was detected as the most abundant antioxidant substance among all fractions. These results suggest that the antioxidant activity of sweet potato differs depending on plant part and cultivar.


  • 주제어

    antioxidant activity .   phenolic compounds .   TBA-reactive substance (TBARS) .   radical scavenging activity .   1,1-diphenyl-2-picrylhydrazyl(DPPH).  

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