|
KMID : 0665220140270020175
|
|
Korean Journal of Food and Nutrition
2014 Volume.27 No. 2 p.175 ~ p.182
|
|
|
Antioxidant Activities of Amaranth (Amaranthus spp. L.) Flower Extracts
|
|
Jo Hyeon-Ju
Kim Jeong-Won
Yoon Jin-A
Kim Kyung-Im
Chung Kang-Hyun
Song Byeong-Chun
An Jeung-Hee
|
|
|
Abstract
|
|
|
|
This study investigates the free radical-scavenging activities of Amaranth (Amaranthus spp. L.) red and purple flower extracts. The methanol and hot water extracts of flower are being evaluated for its total polyphenol and flavonoid contents, scavenging activities by the DPPH and ABTS analysis, SOD-like activity, and inhibition activities of superoxide radical on the HL-60 cells and nitric oxide of the RAW 264.7 cells. The PFM (purple flower extracted with MeOH) showed the highest total phenolic and flavonoid content, 606.95 ㎎ GAE/100 g and 254.69 ㎎ CE/100 g, respectively. Amongst the scavenging activities of the DPPH radicals, PFM(RC50=155.06 ㎍/㎖) is the highest of all the samples. The ABTS radicalscavenging activity is also highest for PFM (53.16%) at the 250 ㎍/㎖ concentration. But, the SOD-like activity of the PFW (purple flower extracted with hot water) increases more than 3 folds of the PFM. In the leukemia HL-60 cell, the PFM shows strongly inhibited superoxide radical generations at a concentration of 200 ㎍/㎖ at 72.34%, which increases with 1.79 folds more than the RFW (red flower extracted with hot water). The inhibition activity of nitric oxide in Raw 264.7 cells is the highest for PMF (46.90%) at a 250 ㎍/㎖ concentration. In conclusion, PMF show the highest flavonoid contents and the most powerful free radical-scavenging activity. Our results suggest that the increase of antioxidant activities depend on flavonoid contents. Thus, Amaranth flower can be useful for natural antioxidant compounds.
|
|
|
KEYWORD
|
|
|
amaranth, free radical-scavenging activity, antioxidant activity
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|
|
|