Optimizing the growth of Haematococcus pluvialis based on a novel microbubble-driven photobioreactor

Summary: Haematococcus pluvialis, the richest bioresource for natural astaxanthin, encounters a challenge of achieving high growth rate when it comes to mass biomass production. Based on the substrate consumption model and Redfield ratio, rapid algae growth benefits from a proper carbon supply. Howe...

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Autores principales:	Kebi Wu, Kezhen Ying, Jin Zhou, Dai Liu, Lu Liu, Yi Tao, James Hanotu, Xiaoshan Zhu, Zhonghua Cai
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Biological sciences Biotechnology Microbial biotechnology Science Q
Acceso en línea:	https://doaj.org/article/cfa5580fffae4b44a7aa82bb5bb21055
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spelling	oai:doaj.org-article:cfa5580fffae4b44a7aa82bb5bb210552021-11-28T04:36:54ZOptimizing the growth of Haematococcus pluvialis based on a novel microbubble-driven photobioreactor2589-004210.1016/j.isci.2021.103461https://doaj.org/article/cfa5580fffae4b44a7aa82bb5bb210552021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2589004221014322https://doaj.org/toc/2589-0042Summary: Haematococcus pluvialis, the richest bioresource for natural astaxanthin, encounters a challenge of achieving high growth rate when it comes to mass biomass production. Based on the substrate consumption model and Redfield ratio, rapid algae growth benefits from a proper carbon supply. However, the conventional cultivation schemes with limited carbon dioxide (CO2) supply and inefficient carbon mass transfer could have constrained the carbon capture and growing ability of H. pluvialis. We hypothesize that optimal H. pluvialis growth improvement may be achieved by efficient CO2 supply. Here, in this study, we first identified the carbon consumption of H. pluvialis during exponential growth. Then, a novel microbubble-driven photobioreactor (MDPBR) was designed to satisfy the carbon demand. The novel microbubble photobioreactor improves the CO2 supply by reducing bubble size, significantly elevating the CO2 mass transfer. With only 0.05 L min−1 of gas flow rate, higher cell growth rate (0.49 d−1) has been achieved in MDPBR.Kebi WuKezhen YingJin ZhouDai LiuLu LiuYi TaoJames HanotuXiaoshan ZhuZhonghua CaiElsevierarticleBiological sciencesBiotechnologyMicrobial biotechnologyScienceQENiScience, Vol 24, Iss 12, Pp 103461- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Biological sciences Biotechnology Microbial biotechnology Science Q
spellingShingle	Biological sciences Biotechnology Microbial biotechnology Science Q Kebi Wu Kezhen Ying Jin Zhou Dai Liu Lu Liu Yi Tao James Hanotu Xiaoshan Zhu Zhonghua Cai Optimizing the growth of Haematococcus pluvialis based on a novel microbubble-driven photobioreactor
description	Summary: Haematococcus pluvialis, the richest bioresource for natural astaxanthin, encounters a challenge of achieving high growth rate when it comes to mass biomass production. Based on the substrate consumption model and Redfield ratio, rapid algae growth benefits from a proper carbon supply. However, the conventional cultivation schemes with limited carbon dioxide (CO2) supply and inefficient carbon mass transfer could have constrained the carbon capture and growing ability of H. pluvialis. We hypothesize that optimal H. pluvialis growth improvement may be achieved by efficient CO2 supply. Here, in this study, we first identified the carbon consumption of H. pluvialis during exponential growth. Then, a novel microbubble-driven photobioreactor (MDPBR) was designed to satisfy the carbon demand. The novel microbubble photobioreactor improves the CO2 supply by reducing bubble size, significantly elevating the CO2 mass transfer. With only 0.05 L min−1 of gas flow rate, higher cell growth rate (0.49 d−1) has been achieved in MDPBR.
format	article
author	Kebi Wu Kezhen Ying Jin Zhou Dai Liu Lu Liu Yi Tao James Hanotu Xiaoshan Zhu Zhonghua Cai
author_facet	Kebi Wu Kezhen Ying Jin Zhou Dai Liu Lu Liu Yi Tao James Hanotu Xiaoshan Zhu Zhonghua Cai
author_sort	Kebi Wu
title	Optimizing the growth of Haematococcus pluvialis based on a novel microbubble-driven photobioreactor
title_short	Optimizing the growth of Haematococcus pluvialis based on a novel microbubble-driven photobioreactor
title_full	Optimizing the growth of Haematococcus pluvialis based on a novel microbubble-driven photobioreactor
title_fullStr	Optimizing the growth of Haematococcus pluvialis based on a novel microbubble-driven photobioreactor
title_full_unstemmed	Optimizing the growth of Haematococcus pluvialis based on a novel microbubble-driven photobioreactor
title_sort	optimizing the growth of haematococcus pluvialis based on a novel microbubble-driven photobioreactor
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/cfa5580fffae4b44a7aa82bb5bb21055
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Optimizing the growth of Haematococcus pluvialis based on a novel microbubble-driven photobioreactor

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