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Open AccessArticle

Reactions of Soy Flour and Soy Protein by Non-Volatile Aldehydes Generation by Specific Oxidation

1
Forest Products Laboratory, USDA, 1 Gifford Pinchot Ave., Madison, WI 53726, USA
2
LERMAB-ENSTIB, University of Lorraine, 27 rue Philippe Seguin, 88000 Epinal, France
3
Department of Physics, King Abdulaziz University, Al Ehtifalat St, Jeddah 21589, Saudi Arabia
*
Author to whom correspondence should be addressed.
Polymers 2019, 11(9), 1478; https://doi.org/10.3390/polym11091478
Received: 30 August 2019 / Revised: 6 September 2019 / Accepted: 7 September 2019 / Published: 10 September 2019
(This article belongs to the Special Issue State-of-the-Art Polymer Science and Technology in Italy)
Soy protein isolate (SPI) and insoluble soy flour polymeric carbohydrates have been reacted with sodium periodate for the specific oxidation of vicinal –OH groups to investigate the reactions involved in this approach to soy flour adhesives. The reactions have been shown to generate carbohydrate oligomer fractions presenting one, two or multiple aldehyde groups. With the exception of the small molecular weight heptanedial, the smaller molecular weight aldehydes generated from mono- and disaccharides by the same reaction do not appear to form from the insoluble soy flour carbohydrates, or have already reacted. The reaction of periodate with soy protein isolate has been shown to generate some aldehydes too. When the mix of SPI and soy insoluble carbohydrates is treated with periodate, the majority of the observed aldehyde carrying species appear to be higher molecular weight carbohydrate oligomer fractions. View Full-Text
Keywords: soy flour; soy protein isolate; insoluble carbohydrates; periodate oxidation; aldehydes generation; condensation reactions; soy adhesives soy flour; soy protein isolate; insoluble carbohydrates; periodate oxidation; aldehydes generation; condensation reactions; soy adhesives
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MDPI and ACS Style

Frihart, C.R.; Pizzi, A.; Xi, X.; Lorenz, L.F. Reactions of Soy Flour and Soy Protein by Non-Volatile Aldehydes Generation by Specific Oxidation. Polymers 2019, 11, 1478.

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