文献类型：期刊文献

英文题名：Dynamic modelling of Haematococcus pluvialis photoinduction for astaxanthin production in both attached and suspended photobioreactors

作者：Zhang, Dongda[1];Wan, Minxi[2];del Rio-Chanona, Ehecatl A.[1];Huang, Jianke[2];Wang, Weiliang[2];Li, Yuanguang[2];Vassiliadis, Vassilios S.[1]

机构：[1]Univ Cambridge, Dept Chem Engn & Biotechnol, Pembroke St, Cambridge CB2 3RA, England;[2]E China Univ Sci & Technol, State Key Lab Bioreactor Engn, Shanghai 200237, Peoples R China

年份：2016

卷号：13

起止页码：69

外文期刊名：ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000370183100007)】；

基金：Author D. Zhang gratefully acknowledges the support from his family. Authors M. Wan, W. Wang, J. Huang and Y. Li are funded by National High Technology Research and Development Program of China (2015AA020602), National Key Technologies R&D Program (2011BAD23B04), National Basic Research Program of China (973 Program: 2011CB200903 & 2011CB200904), China Postdoctoral Science Foundation (2014 T70400), the Fundamental Research Funds for the Central Universities (222201414024). Author E. A. del Rio-Chanona is funded by CONACyT scholarship No. 522530 from the Secretariat of Public Education and the Mexican government.

语种：英文

外文关键词：Astaxanthin; Dynamic simulation; Light attenuation; Temperature; Suspended photobioreactor; Attached photobioreactor

摘要：Haematococcus pluvialis is a green algae with the great potential to generate natural astaxanthin. In the current study, dynamic models are proposed to simulate effects of light intensity, light attenuation, temperature and nitrogen quota on cell growth and astaxanthin production in both suspended and attached photobioreactors, which to the best of our knowledge has not been addressed before. Based on the current models, optimal temperatures for algal growth and astaxanthin accumulation are identified. Cell absorption is found to be the primary factor causing light attenuation in the suspended reactor. In this reactor, astaxanthin accumulation is limited by the low local light intensity due to light attenuation during the initial operation period, but almost independent from that once it is close to the maximum value. Compared to the suspended reactor, light attenuation in the attached reactor is much reduced and biomass growth is remarkably enhanced, which suggests that the attached reactor is a better choice if the process aims for biomass cultivation. However, the well-mixed culture in the suspended reactor can push most cells toward astaxanthin production; while the attached reactor has the potential to prevent the accumulation of astaxanthin in the bottom algae. Therefore, the suspended photobioreactor should be selected if the process target is astaxanthin production. (C) 2015 Elsevier B.V. All rights reserved.