Astaxanthin production from the microalga Haematococcus lacustris with a dual substrate mixotrophy strategy

Author:

Khazi Mahammed Ilyas1,Liaqat Fakhra1,Gu Wenhui2,Mohamed Badr3,Zhu Daochen4ORCID,Li Jian1ORCID

Affiliation:

1. College of Biological and Chemical Engineering College of Agricultural Sciences Panzhihua University Panzhihua China

2. Key Laboratory of Experimental Marine Biology Institute of Oceanology Chinese Academy of Sciences Qingdao China

3. Department of Agricultural Engineering Cairo University Giza Egypt

4. Biofuels Institute School of Emergency Management School of the Environment and Safety Engineering Jiangsu University Zhenjiang China

Abstract

AbstractThis study investigates the development of dual‐substrate mixotrophy strategy to cultivate the microalga Haematococcus lacustris for astaxanthin production. The influence of different concentrations of acetate and pyruvate on biomass productivity was first assessed individually, and then both substrates were used together to improve biomass growth in the green phase and astaxanthin accumulation in red the phase. The results showed that dual‐substrates mixotrophy significantly increased the biomass productivity during green growth phase up to 2‐fold compared to phototrophic controls. Furthermore, supplementation of dual‐substrate to the red phase increased astaxanthin accumulation by 10% in the dual‐substrate group compared to single‐substrate acetate and no substrate. This dual‐substrate mixotrophy approach shows promise for cultivating Haematococcus for commercial production of biological astaxanthin in indoor closed systems.

Publisher

Wiley

Subject

Molecular Medicine,Applied Microbiology and Biotechnology,General Medicine

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