|
KMID : 1011620210370050399
|
|
Korean Journal of Food and Cookey Science
2021 Volume.37 No. 5 p.399 ~ p.407
|
|
|
Comparision of Antioxidant and Antimicrobial Activity of Unripened and Ripened Black Raspberry (Rubus Occidentalis) Extracts
|
|
Ryu Eun-Hye
Gim Sung-Woong
Lee Su-Jung
Kim Yong-Suk
Kwon Ji-Wung
|
|
|
Abstract
|
|
|
Purpose: This study compared and analyzed the antioxidant and antimicrobial activities of unripened and ripened black raspberry (Rubus occidentalis) extracts.
Methods: Unripened and ripened extracts were prepared with water, 25%, 50%, and 75% ethanol. To estimate in vitro antioxidant activity, total polyphenol, total flavonoid, and total anthocyanin contents were measured and DPPH and ABTS radical and nitric oxide (NO) scavenging activity were analyzed. In addition, antimicrobial activity against pathogenic microorganisms and bronchus disease-inducing bacteria was measured.
Results: Total polyphenol and total flavonoid content were higher in unripened than in ripened black raspberry extracts, and total anthocyanin content was higher in ripened extracts. The DPPH and ABTS radical scavenging activity of ripened extracts was also found to be superior to that of the unripened extracts. The NO scavenging activity was found only in unripened extracts. Further, it was confirmed that the unripened extract had a relatively high antimicrobial activity except against K. pneumoniae KCTC 2245 compared to the ripened extract.
Conclusion: These results suggest that unripened black raspberry (Rubus occidentalis) extracts have better antioxidant and antimicrobial activity than ripened extract.
Thus, unripened black raspberry extracts have a higher potential for development as antimicrobial material such as a natural antioxidant and preservatives.
|
|
|
KEYWORD
|
|
|
black raspberry, Rubus occidentalis, antioxidant activities, antimicrobial activity, nitric oxide
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|
|