Intensity of blue LED light: a potential stimulus for biomass and lipid content in fresh water microalgae Chlorella vulgaris.

Abstract:

:Light quality and the intensity are key factors which render microalgae as a potential source of biodiesel. In this study the effects of various intensities of blue light and its photoperiods on the growth and lipid content of Chlorella vulgaris were investigated by using LED (Light Emitting Diode) in batch culture. C. vulgaris was grown for 13 days at three different light intensities (100, 200 and 300 μmol m(-2)s(-1)). Effect of three different light and dark regimes (12:12, 16:08 and 24:00 h Light:Dark) were investigated for each light intensity at 25°C culture temperature. Maximum lipid content (23.5%) was obtained due to high efficiency and deep penetration of 200 μmol m(-2)s(-1) of blue light (12:12 L:D) with improved specific growth (1.26 d(-1)) within reduced cultivation time of 8 days. White light could produce 20.9% lipid content in 10 days at 16:08 h L:D.

journal_name

Bioresour Technol

journal_title

Bioresource technology

authors

Atta M,Idris A,Bukhari A,Wahidin S

doi

10.1016/j.biortech.2013.08.162

subject

Has Abstract

pub_date

2013-11-01 00:00:00

pages

373-8

eissn

0960-8524

issn

1873-2976

pii

S0960-8524(13)01420-X

journal_volume

148

pub_type

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