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J Agric Food Chem. 2007 Jul 25;55(15):6279-84. Epub 2007 Jun 23.

An acidic method of zein extraction from DDGS.

Author information

1
Department of Textiles, Clothing & Design and Department of Biological Systems Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska, 68583-0802, USA.

Abstract

Zein with a higher intrinsic viscosity and phosphorus content, similar protein content, lower yellowness, and at potentially much lower cost than commercially available zein was obtained from distillers dried grains with solubles (DDGS). A novel extraction method using acidic conditions in the presence of a reducing agent has been used to obtain about 10% aqueous ethanol soluble zein from DDGS. The optimum pH, time, temperature, and amount of reducing agent that can produce zein with high quality and yield have been developed. In addition to the zein, about 17% oil based on the dry weight of DDGS has also been obtained during zein extraction. The zein obtained from this research is expected to be suitable for use as fibers, films, and binders and in paints.

PMID:
17590006
DOI:
10.1021/jf0633239
[Indexed for MEDLINE]

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