Ethanol fermentation performance of grain sorghums (Sorghum bicolor) with modified endosperm matrices

Document Type

Article

Publication Date

9-8-2010

Abstract

We tested 13 sorghum entries (lines and hybrids) with different endosperm matrices for ethanol production using a laboratory dry grind process. Waxy and heterowaxy samples had the highest efficiencies. Free amino nitrogen (FAN) contents in sorghum samples were positively related to the fermentation rate during fermentation (R2 = 0.8618). Dried distiller s grain with solubles (DDGS) from different sorghums had significantly different crude protein and crude fat contents. Residual starch content in DDGS ranged from 0.60% for the most efficient sample to 2.66% for the least efficient sample. This study showed that the HD lines (TX1, TX3, TX5, TX7, and TX9) with modified endosperm protein matrix have several attributes desirable for ethanol production: easily pasted starch granules, significantly higher FAN content in finished mashes, 30-45% faster ethanol fermentation rate during early stages, and 50-60% higher lysine content in DDGS. © 2010 American Chemical Society.

Publication Source (Journal or Book title)

Journal of Agricultural and Food Chemistry

First Page

9556

Last Page

9562

This document is currently not available here.

Share

COinS