Earticle

초록

영어

Fossil fuel reserves are decreasing fast rate whreas the demans for alternative fuels such as biodiesel and bioethanol. As a raw material for biodiesel is increasing and accumulated lipids from microalgae is already technically feasible. Microalgae such as marine microaglae and cyanobacteria produce long-chain polyunsaturated fatty acids (LC-PUFAs) by PUFA synthase. Biodiesel production based on microalgae as a feedstock is associated with a high demand of nutrients, such as nitrogen and phosphorus. The N/P ratio of microalgae and cyanobacteria is critical to produce PUFA in nutrient limited cells. In this research, molecular N and P ratio effects on cell growth of microalgae Schizochytrium sp.1, benthic microalgae and Schizochytrium sp. 2. N/P ratio were set to 0/1, 8/1, 12/1, 24/1, 32/1 with other nutrients. Maximum dry cell weight of Schizochytrium sp. 1 was 1.274 g/L (dry cell weight) at N/P ratio of 8/1 and maximum dry cell weight of Schizochytrium sp. 2 was 0.442g/L (dry cell weight) N/P ratio of 12/1 at 15 days of cell cultures, respectively. pH was not changed, however phosphate was rapidly decreased with cell growth. Further study is needed to affect other factor to cell growth and analyze accumulated lipid in microalgae.

키워드

저자

• Nakyeong KIM [ Department of Biotechnology, Pukyoung National University, Busan 608-737, Korea. ]
• Chul HWANGBO [ Department of Biotechnology, Pukyoung National University, Busan 608-737, Korea. ]
• Hye-bin KIM [ Department of Biotechnology, Pukyoung National University, Busan 608-737, Korea. ]
• Sung-Koo KIM [ Department of Biotechnology, Pukyoung National University, Busan 608-737, Korea. ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  한국생물공학회 학술대회

• 간기

  반년간

• 수록기간

  1985~2013

• 십진분류

  KDC 476 DDC 576