Direct and highly productive conversion of cyanobacteria Arthrospira platensis to ethanol with CaCl₂ addition.

ABSTRACT:

Background

The cyanobacterium Arthrospira platensis shows promise as a carbohydrate feedstock for biofuel production. The glycogen accumulated in A. platensis can be extracted by lysozyme-degrading the peptidoglycan layer of the bacterial cell walls. The extracted glycogen can be converted to ethanol through hydrolysis by amylolytic enzymes and fermentation by the yeast Saccharomyces cerevisiae. Thus, in the presence of lysozyme, a recombinant yeast expressing α-amylase and glucoamylase can convert A. platensis directly to ethanol, which would simplify the procedure for ethanol production. However, the ethanol titer and productivity in this process are lower than in ethanol production from cyanobacteria and green algae in previous reports.

Results

SUBMITTER: Aikawa S 

PROVIDER: S-EPMC5828149 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature