Integrated bioethanol and protein production from brown seaweed Laminaria digitata

Bioresource Technology
Xiaoru HouAnne-Belinda Bjerre

Abstract

A wild-growing glucose-rich (i.e. 56.7% glucose content) brown seaweed species Laminaria digitata, collected from the North Coast of Denmark in August 2012, was used as the feedstock for an integrated bioethanol and protein production. Glutamic acid and aspartic acid are the two most abundant amino acids in the algal protein, both with proportional content of 10% in crude protein. Only minor pretreatment of milling was used on the biomass to facilitate the subsequent enzymatic hydrolysis and fermentation. The Separate Hydrolysis and Fermentation (SHF) resulted in obviously higher ethanol yield than the Simultaneous Saccharification and Fermentation (SSF). High conversion rate at maximum of 84.1% glucose recovery by enzymatic hydrolysis and overall ethanol yield at maximum of 77.7% theoretical were achieved. Protein content in the solid residues after fermentation was enriched by 2.7 fold, with similar distributions of amino acids, due to the hydrolysis of polymers in the seaweed cell wall matrix.

References

Nov 29, 2012·Bioresource Technology·Kyung A JungJong Moon Park
Jan 15, 2013·Bioresource Technology·Savindra KumarRamesh Chander Kuhad
Jan 31, 2013·Bioprocess and Biosystems Engineering·Yukyeong ChoSung-Koo Kim
Jul 26, 2013·Biotechnology for Biofuels·Hele Teugjas, Priit Väljamäe

❮ Previous
Next ❯

Citations

Mar 11, 2016·Bioresource Technology·Sandeep Sharma, Svein Jarle Horn
Mar 28, 2017·Marine Drugs·Antonio Trincone
Jul 20, 2021·Journal of Environmental Management·Muhammad Kashif ShahidYounggyun Choi

❮ Previous
Next ❯

Related Concepts