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오메가-3 지방산 및 푸코잔틴 고함량 토착 규조류 아크난티디움 균주의 분리 및 특성
김우림(Urim Kim),조대현(Dae-Hyun Cho),허진아(Jina Heo),김희식(Hee-Sik Kim) 한국해양바이오학회 2019 한국해양바이오학회지 Vol.11 No.1
Omega-3 fatty acids and carotenoids, which are known as representative high-value substances derived from microalgae, are being studied from various diatoms. Most of the diatoms contain fucoxanthin and omega-3 fatty acid. Fucoxanthin produced by diatom has been reported as bioactive compounds exhibiting strong antioxidant, anticancer and anti-inflammatory activities. However, the low growth rate and fucoxanthin content of diatoms are one of the big obstacles to the industrial application. In this study, indigenous marine diatom Achnanthidium sp. BS-001 was isolated for a candidate of fucoxanthin producer. Light intensity and temperature for the culture of Achnanthidium sp. BS-001 were optimized on PhotoBiobox. Optimization of silicate concentration for increasing BS-001 biomass productivity was confirmed in F/2 medium with various concentration of sodium silicate. As a result, condition of light intensity, temperature, and silicate concentration for optimal cultivation were 150 μmol·m<SUP>-2</SUP>·s<SUP>-1</SUP>, 18℃ and 0.106 mM, respectively. Maximum biomass productivity reaches to 154.3 mg·L<SUP>-1</SUP>·day<SUP>-1</SUP>, and then the content of omega-3 fatty acids and fucoxanthin were 19.4 mg·g<SUP>-1</SUP>, 9.05 mg·g<SUP>-1</SUP>, respectively. These results indicate that Achnanthidium sp. BS-001 has the potential to be used as a source of omega-3 fatty acids and fucoxanthin.
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잠재적 푸코잔틴 및 오메가-3 지방산 생산자로서 토착 규조류 오돈텔라의 분리 및 배양 특성
허진아(Jina Heo),조대현(Dae-Hyun Cho),김우림(Urim Kim),김희식(Hee-Sik Kim) 한국해양바이오학회 2018 한국해양바이오학회지 Vol.10 No.1
Fucoxanthin has been reported as bioactive compounds exhibiting strong antioxidant, anticancer and anti-inflammatory activities. Owing to its a wide range of applications and potentials, commercial production of fucoxanthin from algae has been attracted many attentions. Although, most of seaweeds and diatoms contain fucoxanthin as major carotenoid contents, low productivity of fucoxanthin still hinder the industrial application. Here, we newly isolated and identified indigenous marine diatom Odontella sp. BS-003 as a resource of fucoxanthin production. The characterization, optimization and production of the fucoxanthin, along with other bioactive compound omega-3 fatty acid from odontella sp. BS-003 were analyzed in this study, and the results represented optimal culture condition (two-fold silicate containing F/2 medium) significantly enhanced the algal biomass productivity. The maximum biomass (1.83 g/L), fucoxanthin (3.88 ㎎/g), along with omega-3 fatty acid (10 %, w/w) were obtained from the 10 L of photobioreactor. Based on the results, it is speculated that the microalga Odontella sp. BS-003 can be a promising natural resource for the production of bioactive compounds.
ScienceON
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