Effects of connection mode on acid hydrolysis of corn starch during induced electric field treatment

Dandan Li; Na Yang; Zhengzong Wu; Enbo Xu; Yuyi Zhou; Bo Cui; Yongbin Han; Yang Tao

doi:10.1016/j.ijbiomac.2021.12.177

Effects of connection mode on acid hydrolysis of corn starch during induced electric field treatment

Int J Biol Macromol. 2022 Mar 1:200:370-377. doi: 10.1016/j.ijbiomac.2021.12.177. Epub 2022 Jan 7.

Authors

Dandan Li¹, Na Yang², Zhengzong Wu³, Enbo Xu⁴, Yuyi Zhou², Bo Cui³, Yongbin Han⁵, Yang Tao⁶

Affiliations

¹ College of Food Science and Technology, Whole Grain Food Engineering Research Center, Nanjing Agricultural University, Nanjing 210095, Jiangsu Province, China. Electronic address: lidandan@njau.edu.cn.
² College of Food Science and Technology, Jiangnan University, Wuxi 214122, Jiangsu Province, China.
³ State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Jinan 250353, Shandong Province, China.
⁴ College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, Zhejiang Province, China.
⁵ College of Food Science and Technology, Whole Grain Food Engineering Research Center, Nanjing Agricultural University, Nanjing 210095, Jiangsu Province, China.
⁶ College of Food Science and Technology, Whole Grain Food Engineering Research Center, Nanjing Agricultural University, Nanjing 210095, Jiangsu Province, China. Electronic address: yang.tao@njau.edu.cn.

PMID: 34999042
DOI: 10.1016/j.ijbiomac.2021.12.177

Abstract

This study aimed to explore the effect of induced electric field (IEF) treatment on acid hydrolysis of corn starch by altering the connection modes of sample coils of a 4-reactor IEF system. Results suggested that IEF treatment could enhance the hydrolysis of corn starch and series connection (1. RRRR, η=16E_Si²P_in4Z_Si+Z_load) exhibited higher energy efficiency than parallel (9. (RRRR), η=4E_Si²P_inZ_Si+4Z_load), thus contributing to more extensive hydrolysis. Although no new functional group was formed, the starch granules were partially cracked into pieces and the crystallinity was slightly increased after IEF-assisted hydrolysis. Differential scanning calorimetry results indicated that IEF-assisted hydrolysis increased the gelatinization temperatures but decreased the enthalpy of starch, with a greatest variation was observed by series connection. Rapid visco-analysis showed that IEF-assisted hydrolysis greatly decreased the pasting viscosity of corn starch and also series connection showed the strongest reduction. The obtained results could provide a theoretical guide for the applications of IEF technology in biomaterial processing.

Keywords: Acid hydrolysis; Connection mode; Corn starch; Equivalent circuit; Induced electric field.

MeSH terms

Starch*

Substances

Starch