Enhanced Colaconema formosanum biomass and phycoerythrin yield after manipulating inorganic carbon, irradiance, and photoperiod

Han-Yang Yeh; Wei-Lung Wang; Fan-Hua Nan; Meng-Chou Lee

doi:10.1016/j.biortech.2022.127073

Enhanced Colaconema formosanum biomass and phycoerythrin yield after manipulating inorganic carbon, irradiance, and photoperiod

Bioresour Technol. 2022 May:352:127073. doi: 10.1016/j.biortech.2022.127073. Epub 2022 Mar 25.

Authors

Han-Yang Yeh¹, Wei-Lung Wang², Fan-Hua Nan³, Meng-Chou Lee⁴

Affiliations

¹ Department of Aquaculture, National Taiwan Ocean University, Keelung City 20224, Taiwan.
² Department of Biology, National Changhua University of Education, Changhua, 500, Taiwan.
³ Department of Aquaculture, National Taiwan Ocean University, Keelung City 20224, Taiwan; Center of Excellence for Ocean Engineering, National Taiwan Ocean University, Keelung City 20224, Taiwan.
⁴ Department of Aquaculture, National Taiwan Ocean University, Keelung City 20224, Taiwan; Center of Excellence for Ocean Engineering, National Taiwan Ocean University, Keelung City 20224, Taiwan; Center of Excellence for the Oceans, National Taiwan Ocean University, Keelung City 20224, Taiwan. Electronic address: mengchoulee@email.ntou.edu.tw.

PMID: 35346817
DOI: 10.1016/j.biortech.2022.127073

Abstract

Due to an increasing CO₂ concentration leading to global warming, the techniques as carbon capture utilization and storage are currently critical issues. This study aimed to investigate a cultivation strategy using optimal inorganic carbon level, irradiance, and photoperiod for producing the highest biomass and photosynthesis pigment contents (chlorophyll and phycobiliprotein) in the macroalga Colaconema formosanum. The results revealed that adding 1 g L^-1 carbon increases phycoerythrin ratio by 12.52-13.74% and decreases allophycocyanin by 10.4-9.57%. Optimal conditions can increase algal growth by 60%, providing 5-6 mg g^-1 total phycobiliprotein and 650-680 µg g^-1 total chlorophyll. The results in this study illustrate the sensitivity of photosynthesis pigment after treatment with carbon, and suggest a hypothesis explaining the mechanism. The results also provide a feasible use of carbon for high-value large-scale production of pigment in the macroalgae industry.

Keywords: Algal biomass; Colaconema formosanum; Environmental conditions; Inorganic carbon; Photopigments.

MeSH terms

Biomass
Carbon
Carbon Dioxide
Chlorophyll
Photoperiod
Photosynthesis
Phycobiliproteins
Phycoerythrin*
Rhodophyta*

Substances

Phycobiliproteins
Phycoerythrin
Chlorophyll
Carbon Dioxide
Carbon