Circadian rhythm promotes the biomass and amylose hyperaccumulation by mixotrophic cultivation of marine microalga Platymonas helgolandica.

ABSTRACT:

Background

Microalgal starch can be exploited for bioenergy, food, and bioplastics. Production of starch by green algae has been concerned for many years. Currently commonly used methods such as nutrient stress will affect cell growth, thereby inhibiting the production efficiency and quality of starch production. Simpler and more efficient control strategies need to be developed.

Result

We proposed a novel regulation method to promote the growth and starch accumulation by a newly isolated Chlorophyta Platymonas helgolandica. By adding exogenous glucose and controlling the appropriate circadian light and dark time, the highest dry weight accumulation 6.53 g L^-1 (Light:Dark = 12:12) can be achieved, and the highest starch concentration could reach 3.88 g L^-1

SUBMITTER: Shi Q 

PROVIDER: S-EPMC9261046 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature