Growth and changes in the biochemical composition of Isochrysis galbana under different light–emitting diode conditions
(주)코리아스칼라
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- 2023.04.05
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- 2015.12
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서지정보
ㆍ발행기관 : 한국수산해양기술학회(구 한국어업기술학회)
ㆍ수록지정보 : 수산해양기술연구 / 51권 / 4호
ㆍ저자명 : Jae–Hyun BAE, Heui–Chun AN, Heum–Gi PARK, Jin–Chul PARK, Jong–Myung PARK, Kyoung–Hoon LEE, Sung–Eic HONG
영어 초록
The marine microalgae Isochrysis galbana was cultured under various light–emitting diode (LED) light conditions with different wavelengths to examine changes in growth and in amino acid and fatty acid profiles. The culture conditions for the microalgae were Conway medium, salinity of 33 psu, temperature of 24°C, and a 16/8 h light/dark photoperiod. Six light sources, including 5 units of 180W LED lamps (peak wavelength: blue [LB] 470 nm; green [LG] 525 nm; yellow [LY] 595 nm; red [LR] 636 nm; white [LW] 442 nm) and 1 unit of a 175W metal halide (MH) lamp, were used for the experiment. The dry cell weights (gL–1) of I. galbana under different light conditions were in the order of LWLBMHLRLGLY. Levels of essential amino acids were revealed to be significantly higher under LW, LG, and MH than under the other wavelengths (P0.05). The fatty acid, unsaturated fatty acid, and DHA contents of I. galbana were higher under MH, LW, and LG. In addition, the carotenoid content was higher under MH, LW, and LG than under the other wavelengths (P0.05). The fucoxanthin content was highest under MH (0.28%) and lowest under LY (0.2%), and it was 0.26% under LW and LG. The results indicate that the combined use of LW and LG is effective when using LED lamps for I. galbana cultivation.
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