High starch duckweed biomass production and its highly-efficient conversion to bioethanol
Abstract
This paper carried out a new attempt which combined nutrient starvation, uniconazole and elevated CO2 to increase duckweed biomass and starch content. At laboratory level, the highest growth rate and starch content reached up to 9.4 ± 0.2 g m‑2 d‑1 and 75.9 ± 3.3 %, leading to an estimated starch yield of 30.8 t ha‑1 y‑1. Furthermore, without any pretreatment, up to 88.4 ± 0.4 % of glucose from high starch duckweed biomass can be released. The enzymatic hydrolyzates can be efficiently converted to bioethanol by yeast and the ethanol yield based on duckweed biomass input (
- Publication:
-
Environmental Technology and Innovation
- Pub Date:
- November 2023
- DOI:
- 10.1016/j.eti.2023.103296
- Bibcode:
- 2023EnvTI..3203296G
- Keywords:
-
- Duckweed;
- Landoltia punctata;
- High starch accumulation;
- Enzymatic hydrolysis;
- Bioethanol production