title: Effect of kelp waste extracts on the growth and lipid accumulation of microalgae.
abstract: Kelp waste extracts (KWE) contained massive soluble sugars, amino acids and various mineral elements. To probe the effects of KWE on microalgal physiological and biochemical responses, the cultures were carried out under the different dilutions. The results showed that 8.0% KWE increased the biomass productivities and total lipid contents of Chlorella strains dramatically, which were 1.83-31.86 times and 20.78-25.91% higher than that of the control. Phaeodactylum tricornutum and Spirulina maxima presented a better growth performance in 1.0% and 4.0% treatment respectively, while their lipid accumulation were not enhanced. In Chlorella-Arc, Chlorella sorokiniana and P. tricornutum, the contents of saturated and monounsaturated fatty acids could be increased, and polyunsaturated fatty acids could be decreased under the conditions of high concentration of KWE (6.0-8.0%). Briefly, KWE facilitated to enhance the biomass productivity and lipid content of Chlorella strains, also improved the fatty acid compositions for biodiesel production.
authors.affiliation: Jiangsu Provincial Key Laboratory of Marine Biology, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China.
authors.forename: Shiyan
authors.initials: S
authors.lastname: Zheng
authors.affiliation: Jiangsu Provincial Key Laboratory of Marine Biology, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China.
authors.forename: Meilin
authors.initials: M
authors.lastname: He
authors.affiliation: Jiangsu Provincial Key Laboratory of Marine Biology, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Jiang
authors.affiliation: Jiangsu Provincial Key Laboratory of Marine Biology, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China.
authors.forename: Shanmei
authors.initials: S
authors.lastname: Zou
authors.affiliation: Jiangsu Provincial Key Laboratory of Marine Biology, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China.
authors.forename: Weinan
authors.initials: W
authors.lastname: Yang
authors.affiliation: Jiangsu Provincial Key Laboratory of Marine Biology, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: Jiangsu Provincial Key Laboratory of Marine Biology, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Deng
authors.affiliation: Jiangsu Provincial Key Laboratory of Marine Biology, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China. Electronic address: chwang@njau.edu.cn.
authors.forename: Changhai
authors.initials: C
authors.lastname: Wang
mesh_terms: D056804:Biofuels; D002708:Chlorella / Q000254:growth & development / Q000378:metabolism*; D003470:Culture Media; D005227:Fatty Acids / Q000378:metabolism; D044423:Kelp / Q000737:chemistry*; D008055:Lipids / Q000096:biosynthesis*; D058086:Microalgae / Q000254:growth & development / Q000378:metabolism*
chemical_list: D056804:Biofuels; D003470:Culture Media; D005227:Fatty Acids; D008055:Lipids
keywords: Biodiesel; Biomass productivity; Kelp waste extracts; Lipid accumulation; Microalgae