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Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP

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    Abstract - Issue Mar 2014, 35 (2)                                     Back

nstantaneous and historical temperature effects on a-pinene

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:


Publication Data

Paper received:

29 September 2012


Revised received:

27 February 2013



05 June 2013



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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