Enhancing the growth rate and astaxanthin yield of Haematococcus pluvialis by nuclear irradiation and high concentration of carbon dioxide stress

Bioresource Technology
Jun ChengKefa Cen

Abstract

Unicellular green microalgae Haematococcus pluvialis was mutated with (60)Co-γ irradiation to promote growth rate and increase astaxanthin yield under high concentration of CO2 stress. The average specific growth rate of H. pluvialis mutated with 4000 Gy γ-ray irradiation was increased by 15% compared with the original strain with air aeration. The mutant grew best with 6% CO2 (the maximum specific growth rate was 0.60/d) when it was cultured with high concentrations of CO2 (2-10%). The peak biomass productivity (0.16 g/L/d) of the mutant cultured with 6% CO2 was 82% higher than that of the mutant with air. The astaxanthin yield and lipid content of the mutant induced with 6% CO2 and high light (108 μmol photons m(-2) s(-1)) increased to 46.0mg/L and 45.9%, which were 2.4 and 1.3 times higher than those of the wild-type strain, respectively.

References

Dec 25, 2003·Bioresource Technology·A R Domínguez-BocanegraA Tomasini Campocosio
Jul 13, 2004·International Journal of Food Microbiology·Namkyu SunKyung Bin Song
Oct 12, 2004·Bioresource Technology·M OrosaJ Abalde
Oct 3, 2006·Applied and Environmental Microbiology·Jens Steinbrenner, Gerhard Sandmann
Aug 30, 2008·Bioresource Technology·Sheng-Yi ChiuChih-Sheng Lin
Apr 24, 2009·Applied Biochemistry and Biotechnology·Esra ImamogluFazilet Vardar Sukan
Aug 23, 2011·Canadian Journal of Microbiology·Naimeh NajafiShokoofeh Golkhoo
Apr 10, 2013·Bioresource Technology·Jun ChengKefa Cen
Jun 27, 2013·Biotechnology Letters·Alexei Solovchenko, Inna Khozin-Goldberg

❮ Previous
Next ❯

Citations

Nov 24, 2017·Antioxidants·Christian GalassoClementina Sansone
Jun 23, 2018·Preparative Biochemistry & Biotechnology·Ignacio NiizawaGuillermo Adrián Sihufe
Jul 26, 2018·Marine Drugs·Christian GalassoClementina Sansone
Aug 24, 2021·Preparative Biochemistry & Biotechnology·Géssica Cavalcanti Pereira MotaAlfredo Olivera Gálvez

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.