Campus Units

Food Science and Human Nutrition, Center for Crops Utilization Research

Document Type

Article

Publication Version

Published Version

Publication Date

2014

Journal or Book Title

Journal of Bioprocess Engineering and Biorefinery

Volume

3

Issue

4

First Page

323

Last Page

331

DOI

10.1166/jbeb.2014.1106

Abstract

We determined the effects of a commercial proprietary formulation of polysaccharide hydrolyzing enzymes on ethanol fermentation performance, oil partitioning and recovery, and quality of dried distillers grains with solubles (DDGS) on a 1.5-L and 50-L fermentation scale. The enzyme was added at the start of fermentation. Whole beer was subjected to beer well incubation, distillation, and separation of thin stillage from the wet cake. The enzyme promoted faster ethanol production without affecting the final ethanol yield. The enzyme treatments resulted in 8–18% higher wet yield of thin stillage than the control, 13–21% of oil increase in thin stillage, and 11% fiber reduction in DDGS. Free oil recovery from thin stillage was improved by the enzyme treatments (13–53% increase). The present study shows that the use of the polysaccharide hydrolyzing enzymes can add benefits to ethanol plants by increasing corn oil yield and producing fermentation co-products with increased nutritional value and potentially broader applications in animal feeds

Comments

This article is from Journal of Bioprocess Engineering and Biorefinery, 2014; 3(4); 323-331. Doi: 10.1166/jbeb.2014.1106. Posted with permission.

Copyright Owner

American Scientific Publishers

Language

en

File Format

application/pdf