EUBCE 2026 - Dongbang YAO - Application of Starch Processing at Ambient Temperature in Ethanol Fermentation

Application of Starch Processing at Ambient Temperature in Ethanol Fermentation

Short Introductive summary

Bioethanol is a key renewable energy source and platform chemical in reducing reliance on fossil fuels and achieving "dual carbon" goals. Starch is its core raw material, but the traditional fermentation process is energy-consuming and environmentally unfriendly, limiting its sustainable development. To address these issues, this study aims to establish a starch processing technology at ambient temperature centered on the low-temperature active raw starch-degrading a-amylase AmyZ1, and apply it to bioethanol fermentation to achieve green and low-carbon manufacturing of bioethanol. The final ethanol yield based on the ambient temperature starch processing technology was 10.45%, reaching 88.4% of the traditional high-temperature starch processing and fermentation yield. This study confirmed that AmyZ1-based starch processing technology at ambient temperature effectively supports downstream ethanol fermentation. This method eliminates the traditional high-temperature liquefaction step, significantly reducing energy consumption and carbon emissions, and offers an innovative process for green, low-carbon production of starch-based biofuels and chemicals.

D. Yao, Anhui University, Hefei, P.R. CHINA
Z. Fang, Anhui University, Hefei, P.R. CHINA
W. Fang, Anhui University, Hefei, P.R. CHINA
Y. Xiao, Anhui University, Hefei, P.R. CHINA