title: Effect of Pre-Harvest Sprouting on Physicochemical Properties of Starch in Wheat.
abstract: Pre-harvest sprouting (PHS) in wheat (Triticum aestivumL.) occurs when physiologically mature kernels begin germinating in the spike. The objective of this study was to provide fundamental information on physicochemical changes of starch due to PHS in Hard Red Spring (HRS) and Hard White Spring (HWS) wheat. The mean values of α-amylase activity of non-sprouted and sprouted wheat samples were 0.12 CU/g and 2.00 CU/g, respectively. Sprouted samples exhibited very low peak and final viscosities compared to non-sprouted wheat samples. Scanning electron microscopy (SEM) images showed that starch granules in sprouted samples were partially hydrolyzed. Based on High Performance Size Exclusion Chromatography (HPSEC) profiles, the starch from sprouted samples had relatively lower molecular weight than that of non-sprouted samples. Overall, high α-amylase activity caused changes to the physicochemical properties of the PHS damaged wheat.
authors.affiliation: Department of Plant Sciences, North Dakota State University, P.O. Box 6050, Department #7670, Fargo, ND 58108-6050, USA. senay.simsek@ndsu.edu.
authors.forename: Senay
authors.initials: S
authors.lastname: Simsek
authors.affiliation: USDA-ARS Hard Red Spring and Durum Wheat Quality Laboratory, Harris Hall, North Dakota State University, Fargo, ND 58108, USA. jae.ohm@ars.usda.gov.
authors.forename: Jae-Bom
authors.initials: JB
authors.lastname: Ohm
authors.affiliation: Department of Plant Sciences, North Dakota State University, P.O. Box 6050, Department #7670, Fargo, ND 58108-6050, USA. haiyan.lu22@outlook.com.
authors.forename: Haiyan
authors.initials: H
authors.lastname: Lu
authors.affiliation: Department of Plant Sciences, North Dakota State University, P.O. Box 6050, Department #7670, Fargo, ND 58108-6050, USA. mory.O.P.Rugg@gmail.com.
authors.forename: Mory
authors.initials: M
authors.lastname: Rugg
authors.affiliation: Department of Plant Sciences, South Dakota State University, Brookings, SD 57007-2141, USA. bill.berzonsky@bayer.com.
authors.forename: William
authors.initials: W
authors.lastname: Berzonsky
authors.affiliation: Nutrition and Food Sciences Department, College of Food and Agricultural Sciences. msalamri@ksu.edu.sa.
authors.forename: Mohammed S
authors.initials: MS
authors.lastname: Alamri
authors.affiliation: Department of Plant Sciences, North Dakota State University, P.O. Box 6050, Department #7670, Fargo, ND 58108-6050, USA. mohamed.mergoum@ndsu.edu.
authors.forename: Mohamed
authors.initials: M
authors.lastname: Mergoum
keywords: HPSEC; pre-harvest sprout; starch; wheat