Earticle

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To obtain higher biomass productivity from Chlorella sp. culture, heterotrophic cultivations which supplements organic carbon sources into the autotrophic cultures in a photobioreactor was performed. In our study, heterotrophic media was prepared by adding various carbohydrates as well as yeast extract. The biomass of Chlorella sp. obtained from the autotrophic cultivation was 1.36 g/L. However, when each of 0.01 M glucose, xylose or galactose was added, the biomass increased to 1.76, 1.42, 1.47 g/L, respectively. In addition, rhamnose did not affect the biomass production and fructose and sucrose reversely inhibited the growth of Chlorella sp. 0.8 g/L yeast extract stimulated the highest biomass production (7.78 g/L), which is five-fold higher than that from autotrophic cultivation. It was found that the addition of yeast extract increased significantly the growth rate of microalga, namely, the highest biomass was from 6 day incubation while it took 12 days in cases of the autotrophic or heterotrophic growth with carbohydrates.

키워드

저자

• Geun Ho GIM [ Dept. of Environmental Engineering, BK 21 Team for Biohydrogen Production, Cosun University, Gwnagju, 501-759. ]
• Hyeon Seok KIM [ Dept. of Environmental Engineering, BK 21 Team for Biohydrogen Production, Cosun University, Gwnagju, 501-759. ]
• Si Wouk KIM [ Dept. of Environmental Engineering, BK 21 Team for Biohydrogen Production, Cosun University, Gwnagju, 501-759. ]

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간행물

표지보기 관심저널 등록

• 간행물명

  한국생물공학회 학술대회

• 간기

  반년간

• 수록기간

  1985~2013

• 십진분류

  KDC 476 DDC 576