Journal of the Korean Society of Fisheries and Ocean Technology (수산해양기술연구)

The Korean Society of Fisheries and Ocean Technology (한국수산해양기술학회)
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Changes in the growth and biochemical composition of Chaetoceros calcitrans cultures using light-emitting diodes

LED (Light-Emitting Diode)를 이용한 미세조류 (Chaetoceros calcitrans)의 성장 및 생화학적 조성 변화

  • An, Heui-Chun (Aquaculture Industry Division, East Sea Fisheries Research Institute, NFRDI) ;
  • Bae, Jae-Hyun (Aquaculture Industry Division, East Sea Fisheries Research Institute, NFRDI) ;
  • Kwon, O-Nam (East Costal Life Science Institute Gangneung-Wonju National University) ;
  • Park, Heum-Gi (Department of Marine Bioscience Gangneung-Wonju National University) ;
  • Park, Jin-Chul (Department of Marine Bioscience Gangneung-Wonju National University)
  • 안희춘 (국립수산과학원 동해수산연구소 해역산업과) ;
  • 배재현 (국립수산과학원 동해수산연구소 해역산업과) ;
  • 권오남 (강릉원주대학교 동해안생명과학연구소) ;
  • 박흠기 (강릉원주대학교 해양자원육성학과) ;
  • 박진철 (강릉원주대학교 해양자원육성학과)
  • Received : 2014.08.29
  • Accepted : 2014.11.11
  • Published : 2014.11.30
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Abstract

The marine microalgae Chaetoceros calcitrans was cultured under a fluorescent lamp (CON) and light-emitting diodes (LEDs) of various wavelengths (blue, LB; red, LR; green, LG; white, LW); changes in growth, fucoxanthin, chlorophyll-a, amino acid and fatty acid profiles were investigated. LR-exposed cultures exhibited the highest specific growth rate (SGR) (0.34), whereas LG-exposed cultures showed the lowest SGR (0.26). After cultivation for 10 days, the maximum dry cell weight (g/L) of LR-exposed cultures was significantly higher than that of those exposed to other light conditions (LR${\geq_-}$CON>LB${\geq_-}$LW${\geq_-}$LG). Eicosapentaenoic acid (EPA) levels were significantly higher in CON-exposed cultures compared to those exposed to LW (P<0.05), with no marked difference compared to those exposed to LB, LR and LG (P>0.05). The fucoxanthin content was highest in LB-exposed cultures ($6.3{\mu}g/mL$), whereas LW showed the lowest ($3.6{\mu}g/mL$; P<0.05). Chlorophyll-a content was highest in cultures exposed to LB compared to other light sources. These results suggest consistent differences in growth and biochemical composition after exposure to light of different wavelengths.

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References

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