title: Retrogradation behavior of corn starch treated with 1,4-α-glucan branching enzyme.
abstract: The retrogradation behavior of corn starch treated with 1,4-α-glucan branching enzyme (GBE) was investigated using rheometry, pulsed nuclear magnetic resonance (PNMR), differential scanning calorimetry (DSC) and Fourier transform infrared spectroscopy (FTIR). Dynamic time sweep analysis confirmed that the storage modulus (G') of corn starch stored at 4 °C decreased with increasing GBE treatment time. PNMR analysis demonstrated that the transverse relaxation times (T2) of corn starches treated with GBE were higher than that of control during the storage at 4 °C. DSC results demonstrated that the retrogradation enthalpy (ΔHr) of corn starch was reduced by 22.3% after GBE treatment for 10h. Avrami equation analysis showed that GBE treatment reduced the rate of starch retrogradation. FTIR analysis revealed that GBE treatment led to a decrease in hydrogen bonds within the starch. Overall, these results demonstrate that both short- and long-term retrogradation of corn starch were retarded by GBE treatment.
authors.affiliation: School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China.
authors.forename: Wenwen
authors.initials: W
authors.lastname: Li
authors.affiliation: State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China.
authors.forename: Caiming
authors.initials: C
authors.lastname: Li
authors.affiliation: State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China; Synergetic Innovation Center of Food Safety and Nutrition, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China.
authors.forename: Zhengbiao
authors.initials: Z
authors.lastname: Gu
authors.affiliation: School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China.
authors.forename: Yijing
authors.initials: Y
authors.lastname: Qiu
authors.affiliation: State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China.
authors.forename: Li
authors.initials: L
authors.lastname: Cheng
authors.affiliation: State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China; Synergetic Innovation Center of Food Safety and Nutrition, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Hong
authors.affiliation: State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China; Synergetic Innovation Center of Food Safety and Nutrition, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China. Electronic address: zfli@jiangnan.edu.cn.
authors.forename: Zhaofeng
authors.initials: Z
authors.lastname: Li
mesh_terms: D015061:1,4-alpha-Glucan Branching Enzyme / Q000737:chemistry*; D002152:Calorimetry, Differential Scanning; D003460:Crystallization; D009682:Magnetic Resonance Spectroscopy; D017550:Spectroscopy, Fourier Transform Infrared; D013213:Starch / Q000737:chemistry*; D013816:Thermodynamics; D003313:Zea mays / Q000737:chemistry*
chemical_list: D013213:Starch; D015061:1,4-alpha-Glucan Branching Enzyme
keywords: 1,4-α-Glucan branching enzyme; Corn starch; Long-term retrogradation; Potassium bromide (PubChem CID: 253877); Short-term retrogradation; Sodium hydroxide (PubChem CID: 14798)