Augmentation of arsenic enhances lipid yield and defense responses in alga Nannochloropsis sp.

A. K. Upadhyay, S. K. Mandotra, N. Kumar, N. K. Singh, Lav Singh, U. N. Rai

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

The present study was conducted with microalga Nannochloropsis sp. to evaluate its tolerance responses and biofuel perspectives under different arsenic regime (0–1000 μM As(III)). Results showed that optimal biomass (61.00 ± 3.72 mg/L/d) and lipid productivity (20.27 mg/L/d) were obtained in culture treated with 100 μM As(III) in comparison to other treatments. In addition, fatty acid profile of alga was in accordance with European biodiesel standards (EN 14214), which reflects good oxidative stability of oil. High antioxidants viz., ascorbic acid, GSH and cysteine tolerance responses as well as lipid yield at 100 μM As(III), opens a new insight in the field of algal biology. Thus, microalgae Nannochloropsis sp. may be employ in remediation as well as biodiesel production.

Original languageEnglish
Pages (from-to)430-437
Number of pages8
JournalBioresource Technology
Volume221
DOIs
StatePublished - 1 Dec 2016
Externally publishedYes

Keywords

  • Antioxidant
  • Arsenic
  • Biofuel
  • Nannochloropsis sp.
  • Phytoremediation

ASJC Scopus subject areas

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

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