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High-throughput, Microscale Protocol for the Analysis of Processing Parameters and Nutritional Qualities in Maize (Zea mays L.)

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Progress in ethanol production from corn kernel by applying cooking pre-treatment.

Neven Voca¹, Boris Varga, Tajana Kricka

¹Faculty of Agriculture University of Zagreb, Department for Agricultural Technology, Storing & Transport, Svetosimunska cesta 25, Zagreb, Croatia. nvoca@agr.hr

Bioresource Technology

|February 10, 2009

Summary

Hydrothermal pre-treatment significantly enhances corn kernel starch utilization for improved ethanol production. Optimal conditions involve cooking at 1.5 bars for 30 minutes followed by drying at 130°C, maximizing ethanol yield without substantial cost increases.

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Area of Science:

Biotechnology
Agricultural Science
Chemical Engineering

Background:

Corn kernel properties impact ethanol production efficiency.
Hydrothermal pre-treatment can alter starch characteristics.
Optimizing pre-treatment is key to maximizing biofuel yields.

Purpose of the Study:

To evaluate the effect of hydrothermal pre-treatment on corn kernel properties for enhanced ethanol production.
To determine optimal cooking and drying parameters for maximizing ethanol yield.
To assess the economic feasibility of implementing this pre-treatment in industrial processes.

Main Methods:

Corn kernel samples underwent hydrothermal pre-treatment with varying steam pressures (0.5 and 1.5 bars) and durations (10 and 30 min).
Samples were subsequently dried at temperatures ranging from 70°C to 130°C.
Starch utilization and ethanol yield were measured and compared to a control group.

Main Results:

Hydrothermal pre-treatment significantly increased starch utilization through gelatinization.
Samples treated at 1.5 bars for 30 min and dried at 130°C exhibited the highest ethanol yield.
Pre-treatment demonstrated a positive correlation with increased ethanol output.

Conclusions:

Hydrothermal cooking pre-treatment is an effective method for improving ethanol yield from corn kernels.
The process enhances starch accessibility and utilization, leading to higher biofuel production.
This pre-treatment offers a cost-effective strategy for increasing ethanol yields in industrial applications.