RRC ID 62649
Author Jiangyu Zhu, Xiaomiao Tan, Halimatun Saadiah Hafid, Minato Wakisaka
Title Enhancement of biomass yield and lipid accumulation of freshwater microalga Euglena gracilis by phenolic compounds from basic structures of lignin
Journal Bioresource Technology
Abstract Introducing biomass-derived additives into microalgae cultivation to increase its yield has been regarded as a more cost-effective and environment-friendly method compared with gene-editing and nutrients supplementation. In this research, feasibility of three major phenolic compounds from lignin’s basic structures (guaiacyl-, hydroxyphenyl- and syringyl- types) for freshwater microalga Euglena gracilis cultivation was evaluated. The results indicated that trans-4-hydroxy-3-methoxycinnamic acid (HMA), 4-hydroxybenzaldehyde (HBA), and syringaldehyde (SRA) could all promote microalgae growth in a phytohormone-like role, and the highest promotion effect was achieved under HMA treatment. HMA at 0.5 g·L−1 enhanced the cell biomass yield by 2.30 times, while HBA and SRA at the concentration of 0.1 g·L−1 increased the yield by 1.30 and 1.21 times, respectively. In addition, increased carotenoids and lipid biosynthesis were also observed under the treatments of phenolic compounds, which would contribute to the microalgae biofuel production, since the growth and lipid accumulation of E. gracilis were simultaneously enhanced.
Volume 321
Published 2021-2-1
DOI 10.1016/j.biortech.2020.124441
PMID 33268047
IF 7.539
Resource
Algae NIES-48