Silvia Villaró , Marco García-Vaquero , Lara Morán , Carlos Álvarez , Eduarda Melo Cabral , Tomas Lafarga
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引用次数: 0
摘要
微藻platarthrospira BEA 005B在11.4 m3的回旋式光生物反应器和以商业肥料和淡水或海水为基础的培养基中生产。固定稀释率为0.3 d -1时，反应器的生物量生产力从淡水运行时的22.9g·m-2·day-1下降到海水生产时的16.3g·m-2·day-1。海水中产生的生物量蛋白质含量较低;而缬氨酸、亮氨酸和异亮氨酸等必需氨基酸含量较高。海水还引发了类胡萝卜素的产生，并改变了脂肪酸的合成和积累。例如，使用海水生产的生物质中油酸和二十烯酸的含量分别高出319%和210%。结果表明，经过一段适应期后，所选的微藻是可以利用海水生产的，所生产的生物量组成适合于食品应用。
Effect of seawater on the biomass composition of Spirulina produced at a pilot-scale
The microalga Arthrospira platensis BEA 005B was produced in 11.4 m3 raceway photobioreactors and a culture medium based on commercial fertilisers and either freshwater or seawater. The biomass productivity of the reactors operated at a fixed dilution rate of 0.3 day−1 decreased from 22.9 g·m−2·day−1 when operated using freshwater to 16.3 g·m−2·day−1 when the biomass was produced using seawater. The protein content of the biomass produced in seawater was lower; however, the content of essential amino acids including valine, leucine and isoleucine was higher. Seawater also triggered the production of carotenoids and altered the synthesis and accumulation of fatty acids. For example, the biomass produced using seawater showed a 319% and 210% higher content of oleic and eicosenoic acid, respectively. The results demonstrate that it is possible to produce the selected microalga using seawater after an adaptation period and that the composition of the produced biomass is suitable for food applications.
期刊介绍：
New Biotechnology is the official journal of the European Federation of Biotechnology (EFB) and is published bimonthly. It covers both the science of biotechnology and its surrounding political, business and financial milieu. The journal publishes peer-reviewed basic research papers, authoritative reviews, feature articles and opinions in all areas of biotechnology. It reflects the full diversity of current biotechnology science, particularly those advances in research and practice that open opportunities for exploitation of knowledge, commercially or otherwise, together with news, discussion and comment on broader issues of general interest and concern. The outlook is fully international.
The scope of the journal includes the research, industrial and commercial aspects of biotechnology, in areas such as: Healthcare and Pharmaceuticals; Food and Agriculture; Biofuels; Genetic Engineering and Molecular Biology; Genomics and Synthetic Biology; Nanotechnology; Environment and Biodiversity; Biocatalysis; Bioremediation; Process engineering.
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