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. 2019 May 24;12:131. doi: 10.1186/s13068-019-1470-3

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© The Author(s) 2019

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 1 — Cultivation and harvest of A. platensis in industrial-scale open raceway ponds under nitrogen-limited conditions. The normal algae paste with dark green (c), were inoculated in the raceway pond (a) and subjected to nitrogen-limited conditions for 90 h (b), before harvesting to yield light green algal paste (d)