Title

Fermentation of fe-oiled algal biomass by Lactobacillus casei for production of lactic acid

Document Type

Article

Journal/Book Title/Conference

Bioprocess and Biosystems Engineering

Volume

39

Issue

12

Publisher

Springer Link

Publication Date

12-2016

First Page

1817

Last Page

1823

DOI

10.1007/s00449-016-1656-z

Abstract

De-oiled algal biomass (algal cake) generated as waste byproduct during algal biodiesel production is a promising fermentable substrate for co-production of value-added chemicals in biorefinery systems. We explored the ability of Lactobacillus casei 12A to ferment algal cake for co-production of lactic acid. Carbohydrate and amino acid availability were determined to be limiting nutritional requirements for growth and lactic acid production by L. casei. These nutritional requirements were effectively addressed through enzymatic hydrolysis of the algal cake material using α-amylase, cellulase (endo-1,4-β-d-glucanase), and pepsin. Results confirm fermentation of algal cake for production of value-added chemicals is a promising avenue for increasing the overall cost competiveness of the algal biodiesel production process.