What does this research mean for the field?

Integrating sodium hydroxide neutralization, PVA-assisted enzyme protection, and fed-batch feeding provides an efficient, low-water, and low-enzyme strategy for high-solids ethanol production from unwashed pretreated wheat straw. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To develop a low-water and low-enzyme fed-batch strategy for producing ethanol from unwashed industrial wheat straw pretreated by mechanical extrusion and steam explosion.

September 5, 2026Industrial Crops and ProductsOpen Access

Bridging industrial pretreatment and downstream bioconversion through low-enzyme high-solids ethanol production from unwashed wheat straw

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Authors

YFYuyang Fan RWRou Weng YGYuanjia Gu

Discussion

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Overview

Experimental study demonstrates efficient ethanol production from unwashed wheat straw using low enzyme loadings and fed-batch feeding, indicating a cost-effective pathway for biofuel processing.

Key Points

To develop a low-water and low-enzyme fed-batch strategy for producing ethanol from unwashed industrial wheat straw pretreated by mechanical extrusion and steam explosion.
Evaluated enzymatic hydrolysis under solids loadings up to 30% (w/w) and enzyme dosages ranging from 2.7 to 10 FPU/g dry substrate.
Analyzed slurry rheology, water mobility, and component removal to characterize physical and biomass-derived mass-transfer constraints.
Implemented alkaline neutralization, poly(vinyl alcohol) enzyme protection, and fed-batch substrate feeding on washed and unwashed pretreated biomass.
Combining sodium hydroxide neutralization, poly(vinyl alcohol) enzyme protection, and fed-batch feeding increased hydrolysis yield by 18.4%.
Washed pretreated wheat straw reached a maximum ethanol titer of 71.4 g/L at 30% solids loading and 10 FPU/g dry substrate.
The optimized unwashed fed-batch process achieved 35.4 g/L ethanol at 25% solids loading using 2.7 FPU/g dry substrate, resulting in a hydrolysis-stage consumables cost of 2988.8 CNY per metric tonne of ethanol.

Cite This Study

Fan et al. (2026) studied this question.

synapsesocial.com/papers/6a9bd4216b95aff0620eb834 https://doi.org/10.1016/j.indcrop.2026.124311

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September 5, 2026Industrial Crops and ProductsOpen Access

Bridging industrial pretreatment and downstream bioconversion through low-enzyme high-solids ethanol production from unwashed wheat straw

View Full Paper

Ask AI

Bookmark

Authors

YFYuyang Fan RWRou Weng YGYuanjia Gu

Discussion

Member takes

Overview

Experimental study demonstrates efficient ethanol production from unwashed wheat straw using low enzyme loadings and fed-batch feeding, indicating a cost-effective pathway for biofuel processing.

Key Points

To develop a low-water and low-enzyme fed-batch strategy for producing ethanol from unwashed industrial wheat straw pretreated by mechanical extrusion and steam explosion.
Evaluated enzymatic hydrolysis under solids loadings up to 30% (w/w) and enzyme dosages ranging from 2.7 to 10 FPU/g dry substrate.
Analyzed slurry rheology, water mobility, and component removal to characterize physical and biomass-derived mass-transfer constraints.
Implemented alkaline neutralization, poly(vinyl alcohol) enzyme protection, and fed-batch substrate feeding on washed and unwashed pretreated biomass.
Combining sodium hydroxide neutralization, poly(vinyl alcohol) enzyme protection, and fed-batch feeding increased hydrolysis yield by 18.4%.
Washed pretreated wheat straw reached a maximum ethanol titer of 71.4 g/L at 30% solids loading and 10 FPU/g dry substrate.
The optimized unwashed fed-batch process achieved 35.4 g/L ethanol at 25% solids loading using 2.7 FPU/g dry substrate, resulting in a hydrolysis-stage consumables cost of 2988.8 CNY per metric tonne of ethanol.

Cite This Study

Fan et al. (2026) studied this question.

synapsesocial.com/papers/6a9bd4216b95aff0620eb834 https://doi.org/10.1016/j.indcrop.2026.124311

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