title: The influence of cultivation period on growth and biodiesel properties of microalga Nannochloropsis gaditana 1049.
abstract: This work reported for the first time the detailed impacts of cultivation period on growth dynamics and biochemical composition of a microalga strain Nannochloropsis gaditana 1049. The results shown either the biomass accumulation, lipid content, neutral lipid content, monounsaturated fatty acids composition or the favorable fatty acid profile of C16-C18 increased along with the cultivation period extension, but the lipid productivity displayed a decrease since cultured for 16 days, with the highest value reached 289.51 ± 16.34 mg L(-1) d(-1). Biodiesel properties of this microalga also changed with the cultivation period extension, with average unsaturated degree decreased from 1.24 ± 0.03 to 0.59 ± 0.02, cloud point increased from 3.39 ± 0.40 °C to 12.14 ± 0.32 °C, cetane number increased from 54.59 ± 0.20 to 58.96 ± 0.16 and iodine number reduced sharply from 105.15 ± 2.24 gI2/100g to 56.44 ± 1.76 gI2/100g, which all satisfied the specifications of biodiesel standard.
authors.affiliation: Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; University of Chinese Academy of Sciences, Beijing 100049, China. Electronic address: huqunju2008@163.com.
authors.forename: Qunju
authors.initials: Q
authors.lastname: Hu
authors.affiliation: Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China. Electronic address: xwz@scsio.ac.cn.
authors.forename: Wenzhou
authors.initials: W
authors.lastname: Xiang
authors.affiliation: Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China. Electronic address: deepseabio@163.com.
authors.forename: Shikun
authors.initials: S
authors.lastname: Dai
authors.affiliation: Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China. Electronic address: taoli@scsio.ac.cn.
authors.forename: Tao
authors.initials: T
authors.lastname: Li
authors.affiliation: Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; University of Chinese Academy of Sciences, Beijing 100049, China. Electronic address: ycuyang@163.com.
authors.forename: Fangfang
authors.initials: F
authors.lastname: Yang
authors.affiliation: Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; University of Chinese Academy of Sciences, Beijing 100049, China. Electronic address: wdyywxh@163.com.
authors.forename: Qikun
authors.initials: Q
authors.lastname: Jia
authors.affiliation: Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China. Electronic address: wgh@scsio.ac.cn.
authors.forename: Guanghua
authors.initials: G
authors.lastname: Wang
authors.affiliation: Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China. Electronic address: hlwu@scsio.ac.cn.
authors.forename: Hualian
authors.initials: H
authors.lastname: Wu
mesh_terms: D056804:Biofuels; D018533:Biomass; D005227:Fatty Acids / Q000378:metabolism; D008055:Lipids / Q000502:physiology; D058086:Microalgae / Q000254:growth & development* / Q000378:metabolism
chemical_list: D056804:Biofuels; D005227:Fatty Acids; D008055:Lipids
keywords: Biodiesel properties; Cultivation period; Fatty acid profile; Lipid productivity; Nannochloropsis gaditana