Department of Life Sciences and Biotechnology, University of Ferrara, C.so Ercole I d'Este 32, 44121, Ferrara, Italy.
Catalonia Institute for Energy Research, IREC, Marcel·lí Domingo, 2, 43007, Tarragona, Catalonia, Spain.
Appl Microbiol Biotechnol. 2018 Feb;102(4):1945-1954. doi: 10.1007/s00253-017-8728-0. Epub 2018 Jan 22.
The marine diatom Thalassiosira pseudonana grown under air (0.04% CO) and 1 and 5% CO concentrations was evaluated to determine its potential for CO mitigation coupled with biodiesel production. Results indicated that the diatom cultures grown at 1 and 5% CO showed higher growth rates (1.14 and 1.29 div day, respectively) and biomass productivities (44 and 48 mgL day) than air grown cultures (with 1.13 div day and 26 mgL day). The increase of CO resulted in higher cell volume and pigment content per cell of T. pseudonana. Interestingly, lipid content doubled when air was enriched with 1-5% CO. Moreover, the analysis of the fatty acid composition of T. pseudonana revealed the predominance of monounsaturated acids (palmitoleic-16:1 and oleic-18:1) and a decrease of the saturated myristic acid-14:0 and polyunsaturated fatty acids under high CO levels. These results suggested that T. pseudonana seems to be an ideal candidate for biodiesel production using flue gases.
研究了在空气（0.04% CO）和 1%及 5% CO 浓度下生长的海洋硅藻拟菱形藻，以评估其在与生物柴油生产相结合的 CO 缓解方面的潜力。结果表明，在 1%和 5% CO 下生长的藻培养物具有更高的增长率（分别为 1.14 和 1.29 div day）和生物量生产力（分别为 44 和 48 mgL day），而空气培养物的增长率为 1.13 div day，生物量生产力为 26 mgL day。CO 的增加导致拟菱形藻的细胞体积和每细胞色素含量增加。有趣的是，当空气中 CO 浓度从 1%增加到 5%时，脂质含量增加了一倍。此外，拟菱形藻脂肪酸组成的分析表明，在高 CO 水平下，单不饱和脂肪酸（棕榈油酸-16:1 和油酸-18:1）占优势，饱和脂肪酸肉豆蔻酸-14:0 和多不饱和脂肪酸减少。这些结果表明，拟菱形藻似乎是利用烟道气生产生物柴油的理想候选生物。
