|
KMID : 1134820140430030389
|
|
Journal of the Korean Society of Food Science and Nutrition
2014 Volume.43 No. 3 p.389 ~ p.396
|
|
|
Antioxidant, Physiological Activities, and Acetylcholinesterase Inhibitory Activity of Portulaca oleracea Extracts with Different Extraction Methods
|
|
Kwon Yu-Ri
Cho Sung-Mook
Hwang Seung-Pil
Kwon Gi-Man
Kim Jae-Won
Youn Kwang-Seob
|
|
|
Abstract
|
|
|
|
The physiological properties of 70% ethanol extracts from Portulaca oleracea with different extraction methods (reflux extraction, RE; autoclave extraction, AE; low temperature high pressure extraction, LTPE) were investigated. The freeze-dried powder yields of RE, AE, and LTPE were 33.78%, 30.80%, and 11.05%, respectively. The color values of L and b were higher in LTPE, and the chroma values were higher in AE and LTPE compared to RE. The total polyphenolics and proanthocyanidin contents in LTPE were significantly higher than in other extracts. The amount of substances related to flavonoids contents was highest in RE (4.30 mg/g), followed by AE (4.06 mg/g), and LTPE (4.00 mg/g). DPPH radical scavenging ability with a concentration of 500 mg% (w/v) were in the following order; LTPE (88.87%)> RE (83.84%)> AE (80.67%). Further, the reducing power, ABTS radical scavenging ability, and nitrite scavenging activity was observed in the same tendency as seen with the DPPH radical scavenging ability. However, the ferrous ion chelating activity of RE (85.45%) and AE (83.88%) was significantly higher than that of LTPE (75.60%). α-Glucosidase inhibitory activities of RE and LTPE with a concentration of 100 mg% were significantly higher than AE. Xanthine oxidase, and acetylcholinesterase inhibitory activities of LTPE were higher than the other extracts. These results suggest that the extracts from Portulaca oleracea have the potential to act as functional materials, and components of Portulaca oleracea could be effective in the prevention of Alzheimer's disease, and may be used to develop various functional food products.
|
|
|
KEYWORD
|
|
|
Portulaca oleracea, extraction method, antioxidant activity, acetylcholinesterase inhibitory activity
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|
|