Accepted Article This article has been accepted for publication and undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process, which may lead to differences between this version and the Version of Record. Please cite this article as doi: 10.1111/jpy.12549-16-227 This article is protected by copyright. All rights reserved. PROF. ARAN INCHAROENSAKDI (Orcid ID : 0000-0002-3142-897X) Article type : Regular Article Enhancement of total lipid yield by nitrogen, carbon, and iron supplementation in isolated microalgae Ramachandran Sivaramakrishnan, Aran Incharoensakdi* Laboratory of Cyanobacterial Biotechnology Department of Biochemistry Faculty of Science Chulalongkorn University Bangkok 10330, Thailand *Corresponding Author E-mail: aran.i@chula.ac.th Phone No: +66 2 218 5422 Fax No: +66 2 218 5418. Editorial Responsibility: M. Schroda (Associate Editor) ABSTRACT The biochemical contents and biodiesel production ability of three microalgal strains grown under different sodium nitrate, sodium carbonate, and ferric ammonium citrate (iron) levels were investigated. The highest biomass and lipid contents were found in Scenedesmus sp., Chlorella sp., and Chlamydomonas sp. when grown in normal BG-11 containing sodium carbonate concentration at 0.03 g · L -1 , and in normal BG-11 containing iron concentration at 0.009 or 0.012 g · L -1 . Increasing the sodium nitrate level increased the biomass content, but