Investigation on the use of blue and yellow light-emitting diodes (LEDs) for growth, proximate composition enhancement and morphology of marine microalga Isochrysis sp.

Microalgae are photoautotrophic organisms that need light as their main energy source. In this study, the growth, proximate composition and morphology of marine microalga, Isochrysis sp., cultured under blue and yellow light-emitting diodes (LED) with fluorescent light as control were compared...

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Main Author:	Suhaimi, Norhayati
Format:	Project Paper Report
Language:	English
Published:	2016
Online Access:	http://psasir.upm.edu.my/id/eprint/78211/ http://psasir.upm.edu.my/id/eprint/78211/1/FPV%202016%2053%20-%20IR.pdf

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author	Suhaimi, Norhayati
author_facet	Suhaimi, Norhayati
author_sort	Suhaimi, Norhayati
building	UPM Institutional Repository
collection	Online Access
description	Microalgae are photoautotrophic organisms that need light as their main energy source. In this study, the growth, proximate composition and morphology of marine microalga, Isochrysis sp., cultured under blue and yellow light-emitting diodes (LED) with fluorescent light as control were compared. Growth of the microalga was observed for 13 days and the effect of the three different light sources on cell count, optical density and specific growth rate were determined. At the end of the experiment, results showed that Isochrysis sp. cultured under fluorescent light had highest specific growth rate (SGR)while yellow LED and blue LED cultures had similar SGR. Yellow LED and fluorescent light produced higher cell density in culturing Isochrysissp. The cultures were harvested during the stationary phase and proximate analysis was done. Lipid content was significantly higher in Isochrysis sp. grown under yellow LED, whereas, protein composition was significantly higher in blue and yellow LED cultures. Yellow LED and fluorescent light cultures also had significantly high carbohydrate composition compared to blue LED cultures. Cell morphology was studied under scanning electron microscope during initial and final stage of the microalga cultures and fluorescent light produced the largest cells. Thus, it can be concluded that yellow LED had the optimum wavelength for Isochrysis sp. culture. Besides that, different wavelength of lights also affected the morphology of the microalga cells.
first_indexed	2025-11-15T12:13:33Z
format	Project Paper Report
id	upm-78211
institution	Universiti Putra Malaysia
institution_category	Local University
language	English
last_indexed	2025-11-15T12:13:33Z
publishDate	2016
recordtype	eprints
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spelling	upm-782112020-06-04T06:37:27Z http://psasir.upm.edu.my/id/eprint/78211/ Investigation on the use of blue and yellow light-emitting diodes (LEDs) for growth, proximate composition enhancement and morphology of marine microalga Isochrysis sp. Suhaimi, Norhayati Microalgae are photoautotrophic organisms that need light as their main energy source. In this study, the growth, proximate composition and morphology of marine microalga, Isochrysis sp., cultured under blue and yellow light-emitting diodes (LED) with fluorescent light as control were compared. Growth of the microalga was observed for 13 days and the effect of the three different light sources on cell count, optical density and specific growth rate were determined. At the end of the experiment, results showed that Isochrysis sp. cultured under fluorescent light had highest specific growth rate (SGR)while yellow LED and blue LED cultures had similar SGR. Yellow LED and fluorescent light produced higher cell density in culturing Isochrysissp. The cultures were harvested during the stationary phase and proximate analysis was done. Lipid content was significantly higher in Isochrysis sp. grown under yellow LED, whereas, protein composition was significantly higher in blue and yellow LED cultures. Yellow LED and fluorescent light cultures also had significantly high carbohydrate composition compared to blue LED cultures. Cell morphology was studied under scanning electron microscope during initial and final stage of the microalga cultures and fluorescent light produced the largest cells. Thus, it can be concluded that yellow LED had the optimum wavelength for Isochrysis sp. culture. Besides that, different wavelength of lights also affected the morphology of the microalga cells. 2016-03 Project Paper Report NonPeerReviewed text en http://psasir.upm.edu.my/id/eprint/78211/1/FPV%202016%2053%20-%20IR.pdf Suhaimi, Norhayati (2016) Investigation on the use of blue and yellow light-emitting diodes (LEDs) for growth, proximate composition enhancement and morphology of marine microalga Isochrysis sp. [Project Paper Report]
spellingShingle	Suhaimi, Norhayati Investigation on the use of blue and yellow light-emitting diodes (LEDs) for growth, proximate composition enhancement and morphology of marine microalga Isochrysis sp.
title	Investigation on the use of blue and yellow light-emitting diodes (LEDs) for growth, proximate composition enhancement and morphology of marine microalga Isochrysis sp.
title_full	Investigation on the use of blue and yellow light-emitting diodes (LEDs) for growth, proximate composition enhancement and morphology of marine microalga Isochrysis sp.
title_fullStr	Investigation on the use of blue and yellow light-emitting diodes (LEDs) for growth, proximate composition enhancement and morphology of marine microalga Isochrysis sp.
title_full_unstemmed	Investigation on the use of blue and yellow light-emitting diodes (LEDs) for growth, proximate composition enhancement and morphology of marine microalga Isochrysis sp.
title_short	Investigation on the use of blue and yellow light-emitting diodes (LEDs) for growth, proximate composition enhancement and morphology of marine microalga Isochrysis sp.
title_sort	investigation on the use of blue and yellow light-emitting diodes (leds) for growth, proximate composition enhancement and morphology of marine microalga isochrysis sp.
url	http://psasir.upm.edu.my/id/eprint/78211/ http://psasir.upm.edu.my/id/eprint/78211/1/FPV%202016%2053%20-%20IR.pdf

Investigation on the use of blue and yellow light-emitting diodes (LEDs) for growth, proximate composition enhancement and morphology of marine microalga Isochrysis sp.

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