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  1. Yezin Agricultural University
  2. Advanced Center for Agricultural Research and Research and Education (ACARE)

Effects of Thermomechanical Extrusion and Particle Size Reduction on Bioconversion Rate of Corn Fiber for Ethanol Production

http://hdl.handle.net/20.500.12678/0000000053
http://hdl.handle.net/20.500.12678/0000000053
b489273e-d048-4f4b-9fa5-4ce9cce5075f
39a68a79-b56b-4ea7-b676-ed38618e77d0
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Dr. Dr. M. Lin paper.pdf (2681 Kb)
Publication type
Journal article
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Publication
Title
Title Effects of Thermomechanical Extrusion and Particle Size Reduction on Bioconversion Rate of Corn Fiber for Ethanol Production
Language en
Publication date 2014
Authors
Myat Lin
Gi-Hyung Ryu
Description
The objective of this research was to evaluate the effect of thermomechanical extrusion and particle size (PS) reduction on the bioconversion rate of corn fiber for ethanol production. Extrusion was conducted at a screw speed of 300 rpm, feed rate of 120 g/min, feed moisture content of 30%, melt temperature of 140°C, and die diameter of 3 mm. Raw and extruded corn fiber were separated into three different PSs (1 > PS ≥0.5, 0.5 > PS ≥0.3, and 0.3 > PS ≥0.15 mm) with a wire sieve. Extrusion pretreatment and PS reduction resulted in a significant (P < 0.05) difference in physical properties and color values of extruded corn fiber as a result of accelerated degradation of corn fiber structure. Significant increase in water solubility index of extruded corn fiber at 0.3 > PS ≥0.15 mm was an indication of high degradation of starch during extrusion for higher release of polysaccharides. Moreover, extruded corn fiber at PS reduction 0.3 > PS ≥ 0.15 mm also significantly increased (P < 0.05) ethanol yield (69.11 g/L) and conversion (68.18%) by increasing protein digestibility and free amino nitrogen, which are essential for higher fermentation efficiency.
Keywords
Bioconversion Rate, Corn Fiber, Ethanol Production
Identifier https://yauor-yau.archive.knowledgearc.net/handle/123456789/316
Journal articles
4: 366–373
AACC International, Inc.
91
Conference papaers
Books/reports/chapters
Thesis/dissertations
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