The influence of light intensity and photoperiod on the growth and lipid content of microalgae Nannochloropsis sp.

Suzana Wahidin, and Ani Idris, and Sitti Raehanah Muhamad Shaleh, (2013) The influence of light intensity and photoperiod on the growth and lipid content of microalgae Nannochloropsis sp. Bioresource Technology, 129 . pp. 7-11. ISSN 0960-8524

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Official URL: http://dx.doi.org/10.1016/j.biortech.2012.11.032

Abstract

Illumination factors such as length of photoperiod and intensity can affect growth of microalgae and lipid content. In order to optimize microalgal growth in mass culture system and lipid content, the effects of light intensity and photoperiod cycle on the growth of the marine microalgae, Nannochloropsis sp. were studied in batch culture. Nannochloropsis sp. was grown aseptically for 9 days at three different light intensities (50, 100 and 200 l mol m 2 s 1 ) and three different photoperiod cycles (24:0, 18:06 and 12:12 h light:dark) at 23 C cultivation temperature. Under the light intensity of 100 l mol m 2 s 1 and photoperiod of 18 h light: 6 h dark cycle, Nannochloropsis sp. was found to grow favorably with a maxi- mum cell concentration of 6.5 10 7 cells mL 1 , which corresponds to the growth rate of 0.339 d 1 after 8 day cultivation and the lipid content was found to be 31.3%.

Item Type:Article
Subjects:Q Science > QH Natural history > QH426 Genetics
ID Code:6278
Deposited By:IR Admin
Deposited On:03 Jul 2013 14:55
Last Modified:17 Feb 2015 15:48

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