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dc.contributor.authorKatoh, Shigeo-
dc.date.accessioned2018-11-06T05:21:09Z-
dc.date.available2018-11-06T05:21:09Z-
dc.date.issued2008-03-
dc.identifier.citationJOURNAL OF BIOSCIENCE AND BIOENGINEERING, v. 105, No. 3, Page. 216-220en_US
dc.identifier.issn1389-1723-
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S1389172308700550?via%3Dihub-
dc.identifier.urihttps://repository.hanyang.ac.kr/handle/20.500.11754/80258-
dc.description.abstractFlashing light from blue light emitting diodes is an effective method for the reduction of energy consumption in the bioproduction of astaxanthin by Haematococcus pluvialis. We investigated the effects of light intensity and frequency on the final astaxanthin concentration in bioproduction by H. pluvialis grown mixotrophically. The final astaxanthin concentration under illumination with flashing light, with frequencies ranging from 25 to 200 Hz, was dependent on the light intensity and on the duty cycle and was equivalent, or higher, in comparison with that under illumination with continuous light at the same incident intensity. The light intensity determined the maximum attainable concentration of astaxanthin under continuous illumination. Under illumination with flashing light, the ratio of the final astaxanthin concentration to the maximum concentration at a specific light intensity was correlated to the duty cycle in the frequency range from 25 to 200 Hz. The effect of lower frequencies on enhanced astaxanthin production under flashing light was also studied; at levels as low as I Hz, higher final astaxanthin concentrations were observed under flashing light compared to concentrations attained under continuous light.en_US
dc.description.sponsorshipThe authors wish to express their gratitude for support from the Iwata Chemical Co., Ltd. and the Toyoda Gosei Co., Ltd. This work was partially supported by the Industrial Technology Research Grant Program in 2005, from the New Energy and Industrial Technology Development Organization (NEDO) of Japan.en_US
dc.language.isoen_USen_US
dc.publisherSOC BIOSCIENCE BIOENGINEERING JAPANen_US
dc.subjectflashing lighten_US
dc.subjectblue light emitting diodeen_US
dc.subjectlight intensityen_US
dc.subjectastaxanthinen_US
dc.subjectHaematococcus pluvialisen_US
dc.titleEffect of Light Intensity and Frequency of Flashing Light from Blue Light Emitting Diodes on Astaxanthin Production by Haematococcus pluvialisen_US
dc.typeArticleen_US
dc.identifier.doi10.1263/jbb.105.216-
dc.relation.journalJOURNAL OF BIOSCIENCE AND BIOENGINEERING-
dc.contributor.googleauthorKatsuda, Tomohisa-
dc.contributor.googleauthorShiraishi, Hironori-
dc.contributor.googleauthorIshizu, Naoki-
dc.contributor.googleauthorRanjbar, Reza-
dc.contributor.googleauthorKatoh, Shigeo-
dc.relation.code2008204750-
dc.sector.campusE-
dc.sector.daehakCOLLEGE OF ENGINEERING SCIENCES[E]-
dc.sector.departmentDIVISION OF MATERIALS & CHEMICAL ENGINEERING-
dc.identifier.pidkatoh-
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COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > ETC
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