An acidic method of zein extraction from DDGS

Weijie Xu, Narendra Reddy, Yiqi Yang

Research output: Contribution to journalArticlepeer-review

69 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)6279-6284
Number of pages6
JournalJournal of Agricultural and Food Chemistry
Issue number15
StatePublished - Jul 25 2007
Externally publishedYes


  • DDGS
  • Extraction
  • Oil
  • Protein
  • Zein

ASJC Scopus subject areas

  • Chemistry(all)
  • Agricultural and Biological Sciences(all)


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