Freeze‐Thaw Treatment in 2% w/w NaOH‐6 M Urea Enhanced Extraction of β‐(1, 3;1, 4)‐Glucan from Corn Pericarp. Issue 1 (July 2015)

• Record Type: Journal Article
• Authors: Yoshida, Tomoki; Honda, Yoichi; Tujimoto, Takashi; Uyama, Hiroshi; Azuma, Jun‐ichi; Haryono, Agus; Azuma, Jun‐ichi
• Is Part Of: Macromolecular symposia. Volume 353:Issue 1(2015)
• Page Start: 205
• Page End: 211
• Publication Date: 2015-07
• Subjects: Macromolecules -- Congresses; Polymers -- Congresses; Polymerization -- Congresses; Macromolecules -- Periodicals; Polymers -- Periodicals; Polymerization -- Periodicals; 547.705
• DOI: 10.1002/masy.201550328
• Languages: English
• ISSNs: 1022-1360

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Summary</title> <sec id="masy201550328-sec-0001" sec-type="section"> <p>Enhancement of the extraction rate of β‐glucan from corn pericarp (CP) by repeated freeze‐thaw treatment of 2% w/w NaOH‐6 M urea solution was investigated with emphasis on the association of β‐glucan with cellulose in CP. Three freeze‐thaw cycles were found to be adequate for extraction of β‐glucan at a rate of 97.8%. The increase in extraction rate induced by the freeze‐thaw treatment was estimated to be approximately 20%. The natural cellulose I structure of the cellulose in CP was disrupted by the freeze‐thaw treatment, suggesting that the increase was due to greater β‐glucan solubilization owing to the disruption of its association with cellulose by hydrogen bonds. The applicability of the present technique to other cereals was also demonstrated; extraction rates of 82.8% for oat meal and 92.5% for barley flour were achieved.</p> </sec> </abstract>