Open AccessEffects of incident light intensity and light path length on cell growth and oil accumulation in Botryococcus braunii (Chlorophyta)
Author(s) -
Wang ShiKai,
Guo Chen,
Wu Wei,
Sui KunYan,
Liu ChunZhao
Publication year - 2019
Publication title -
engineering in life sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.547
H-Index - 57
eISSN - 1618-2863
pISSN - 1618-0240
DOI - 10.1002/elsc.201800128
Subject(s) - photobioreactor , botryococcus braunii , light intensity , chlorophyta , biomass (ecology) , intensity (physics) , light crude oil , path length , fatty acid , ray , chemistry , botany , biology , algae , materials science , optics , biochemistry , optoelectronics , ecology , organic chemistry , physics
Botryococcus braunii was cultured in different light path length under different incident light intensity to investigate the effect of light on alga growth as well as hydrocarbon and fatty acid accumulation. Results indicated that longer light path length required higher incident light intensity in order to meet the light requirement of algal growth and hydrocarbon accumulation during the course of cultivation. However, hydrocarbon profile was only affected by the incident light intensity and not influenced by the light path length. High incident light intensity enhanced the accumulation of hydrocarbons with longer carbon chains. Besides, the fatty acid content and profiles were significantly influenced by both incident light intensity and light path. Higher fatty acid content and higher percentage of C18 and monounsaturated fatty acid components were achieved at the higher incident light intensity and lower light path length. Taken together, these results are benefit to improve its biomass and oil productivity through the optimization of light and photobioreactor design.