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IJFS 2020, 19 Back to browse issues page
Short communication: Effect of light and nitrogen concentration on the growth and lipid content of marine diatom, Chaetoceros calcitrans
M. Akbarnejad *, H. Rajabi Islami, M. Javaheri Baboli, M. Shamsaie Mehrgan, Y. Filizadeh
1 Department of Fisheries, Science and Research Branch, Islamic Azad University, Tehran, Iran. , mahsa.akbarnejad@yahoo.com
Abstract:   (462 Views)

The effects of light intensity (µ mol m-2 s-1) and different levels of Nitrogen was made on the biomass and lipid of microalgae Chaetoceros calcitrans under  laboratory conditions in the north of Iran in 2016. The pure strand of C. calcitrans with F/2 media (8 sets of 3 flasks) were placed in front of the light source at values of 80, 160, and 240 µ mol m-2 s-1. The cell count was collected in lasted 7 days. Every day cells were counted recorded. Maximum cell densities were approximately 279, 299, 395 and 402×106 cells ml−1in 25, 50, 75 and 100 % nutrient levels respectively, up to the 20th day of media enrichment, also maximum cell density was 98×106 cells ml−1 in 100% nutrient level and 240 µ mol m-2 s-1 up to the 20th day. Results showed that the lipid yield decreased significantly with increasing light levels. The total lipid was significantly higher (14.41%) in control compare with 25, 50, 75 and 100% nutrient levels. The total lipid at 80, 160, and 240 µ mol m-2 s-1 were 13.31, 12.09 and 10.17% respectively. The production and storage of lipids by microalgae in response to variations in environmental factors are specific for each microalgae species.

Keywords: Chaetoceros calcitrans, Light, Nutrient levels, Experimental conditions
Full-Text [PDF 339 kb]   (271 Downloads)    
Type of Study: Orginal research papers | Subject: aquaculture
Received: 2017/05/14 | Accepted: 2017/07/11 | Published: 2020/03/20
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Akbarnejad M, Rajabi Islami H, Javaheri Baboli M, Shamsaie Mehrgan M, Filizadeh Y. Short communication: Effect of light and nitrogen concentration on the growth and lipid content of marine diatom, Chaetoceros calcitrans. IJFS. 2020; 19 (2) :986-993
URL: http://jifro.ir/article-1-2732-en.html


Volume 19, Issue 2 (2020) Back to browse issues page
مجله علوم شیلاتی ایران Iranian Journal of Fisheries Sciences
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