Different multi-scale structural features of oat resistant starch prepared by ultrasound combined enzymatic hydrolysis affect its digestive properties

Ji'an Xia; Yu Zhang; Kai Huang; Hongwei Cao; Qiqi Sun; Man Wang; Suhua Zhang; Zhenliang Sun; Xiao Guan

Ultrasonics Sonochemistry (Jun 2023)

Different multi-scale structural features of oat resistant starch prepared by ultrasound combined enzymatic hydrolysis affect its digestive properties

Ji'an Xia,
Yu Zhang,
Kai Huang,
Hongwei Cao,
Qiqi Sun,
Man Wang,
Suhua Zhang,
Zhenliang Sun,
Xiao Guan

Affiliations

Ji'an Xia: School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
Yu Zhang: School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China; National Grain Industry (Urban Grain and Oil Security) Technology Innovation Center, Shanghai 200093, China
Kai Huang: School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China; National Grain Industry (Urban Grain and Oil Security) Technology Innovation Center, Shanghai 200093, China
Hongwei Cao: School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China; National Grain Industry (Urban Grain and Oil Security) Technology Innovation Center, Shanghai 200093, China
Qiqi Sun: Joint Center for Translational Medicine, Southern Medical University Affiliated Fengxian Hospital, Shanghai 201499, China
Man Wang: Joint Center for Translational Medicine, Southern Medical University Affiliated Fengxian Hospital, Shanghai 201499, China
Suhua Zhang: Suzhou Kowloon Hospital Shanghai Jiao Tong University School of Medicine, Suzhou, Jiangsu 215028, China
Zhenliang Sun: Joint Center for Translational Medicine, Southern Medical University Affiliated Fengxian Hospital, Shanghai 201499, China; Corresponding authors at: School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China.
Xiao Guan: School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China; National Grain Industry (Urban Grain and Oil Security) Technology Innovation Center, Shanghai 200093, China; Corresponding authors at: School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China.

Journal volume & issue: Vol. 96
p. 106419

Abstract

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In this research, oat resistant starch (ORS) was prepared by autoclaving-retrogradation cycle (ORS-A), enzymatic hydrolysis (ORS-B), and ultrasound combined enzymatic hydrolysis (ORS-C). Differences in their structural features, physicochemical properties and digestive properties were studied. Results of particle size distribution, XRD, DSC, FTIR, SEM and in vitro digestion showed that ORS-C was a B + C-crystal, and ORS-C had a larger particle size, the smallest span value, the highest relative crystallinity, the most ordered and stable double helix structure, the roughest surface shape and strongest digestion resistance compared to ORS-A and ORS-B. Correlation analysis revealed that the digestion resistance of ORS-C was strongly positively correlated with RS content, amylose content, relative crystallinity and absorption peak intensity ratio of 1047/1022 cm−1 (R1047/1022), and weakly positively correlated with average particle size. These results provided theoretical support for the application of ORS-C with strong digestion resistance prepared by ultrasound combined enzymatic hydrolysis in the low GI food application.

Published in Ultrasonics Sonochemistry

ISSN: 1350-4177 (Print); 1873-2828 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Chemistry; Science: Physics: Acoustics. Sound
Website: https://www.journals.elsevier.com/ultrasonics-sonochemistry

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