Characterization and optimization of carbohydrate production from an indigenous microalga Chlorella vulgaris FSP-E

Shih Hsin Ho, Shu Wen Huang, Chun Yen Chen, Tomohisa Hasunuma, Akihiko Kondo, Jo Shu Chang

Research output: Contribution to journalArticlepeer-review

106 Citations (Scopus)

Abstract

In this study, three indigenous microalgae isolates were examined for their ability to produce carbohydrates. Among them, Chlorella vulgaris FSP-E displayed relatively high cell growth rate and carbohydrate content. The carbohydrate productivity of C. vulgaris FSP-E was further improved by using engineering strategies. The results show that using an appropriate light intensity and inoculum size could effectively promote cell growth and carbohydrate productivity. Nitrogen starvation triggered the accumulation of carbohydrates in the microalga, achieving a carbohydrate content of 51.3% after 4-day starvation. Under the optimal conditions, the highest biomass and carbohydrate productivity were 1.437 and 0.631gL-1d-1, respectively. This performance is better than that reported in most related studies. Since glucose accounted for nearly 93% of the carbohydrates accumulated in C. vulgaris FSP-E, the microalga is an excellent feedstock for bioethanol fermentation.

Original languageEnglish
Pages (from-to)157-165
Number of pages9
JournalBioresource technology
Volume135
DOIs
Publication statusPublished - 2013 May

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal

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