Seasonal
variation of antibacterial activities in the
green
alga Ulva pertusa Kjellman
Jae-Suk Choi1,
Yu-Mi Ha1, Bo-Bae Lee1, Hye Eun Moon1, Kwang
Keun Cho2 and In Soon Choi1,3*
1RIS Center,
Industry-Academic Cooperation Foundation, Silla University, Busan 617 736,
Republic of Korea
2Department of
Animal Resources Technology, Gyeongnam National University of Science and
Technology,
150 Chilam-dong,
Jinju, Gyeongnam, 660 758, Republic of Korea
3Department of
Biological Science, Silla University, Busan 617 736, Republic of Korea
*Corresponding
Author E-mail: ischoi@silla.ac.kr
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Publication
Data
Paper received:
29 September 2012
Revised received:
27 February 2013
Accepted:
05 June 2013
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Abstract
The
present study was performed to screen out the extracts of algae and assess
the seasonal variation in antimicrobial activity of Ulva pertusa
against Gardnerella vaginalis. Seasonal variation in antibacterial
activity was observed, with the extracts showing no activity during summer
and autumn, and showing antibacterial activity from early winter (December)
to middle spring (April). The maximum value of antimicrobial activity (6.5 mm
inhibition zone at 5 mg disk-1) of U. pertusa against G.
vaginalis was observed in April. Otherwise, for both chlorophyll a and b,
the highest content (2.87 mg g-1 and 1.37 mg g-1) was
observed in March 2009. These results may reflect variation in cellular
chemical compositions such as secondary metabolite(s) rather than chlorophyll
and biological activities according to season.
Key
words
Antimicrobial
activity, Gardnerella vaginalis, Seasonal variation, Ulva pertusa
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