Investigating the effects of pre- and post-electron beam treatment on the multiscale structure and physicochemical properties of dry-heated buckwheat starch

被引：13

作者：

Ge, Xiangzhen ^{[1
,2
]}

Duan, Hao ^{[1
]}

Zhou, Yaxi ^{[1
]}

Zhou, Shiqi ^{[1
]}

Shen, Huishan ^{[2
]}

Liang, Wei ^{[2
]}

Sun, Zhuangzhuang ^{[2
]}

Yan, Wenjie ^{[1
]}

机构：

[1] Beijing Union Univ, Beijing Key Lab Bioact Subst & Funct Foods, Beijing 100023, Peoples R China

[2] Northwest A&F Univ, Engn Res Ctr Grain & Oil Functionalized Proc Univ, Coll Food Sci & Engn, 22 Xinong Rd, Yangling 712100, Shaanxi, Peoples R China

来源：

INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES | 2023年 / 227卷

基金：

中国国家自然科学基金;

关键词：

Modified starch; Dry heat treatment; Ionizing radiation; Physicochemical properties; Structural investigation; FUNCTIONAL-PROPERTIES; MAIZE STARCH; CRYSTALLINE; IRRADIATION;

D O I：

10.1016/j.ijbiomac.2022.12.043

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

This study presents the effects of dry heat (DH) assisted by pre-and post-electron beam (EB) treatment on buckwheat starch's multiscale structural, physicochemical, and digestive properties. The granule integrity and crystal shape were not affected by the investigated treatments. However, DH and EB treatments decreased amylose content, crystallinity, molecular weight, swelling power, thermal transition temperatures and gelati-nization enthalpy while increasing solubility and the content of A chain, B1 chain, and resistant starch. EB application to DH starch promoted subsequent structural changes and enhanced starch properties compared to samples DH-processed alone. In addition, EB-induced starch chain depolymerization and structural rearrange-ment had sequential effects. EB pre-treatment reduced DH starch's amylose content, molecular weight, and swelling power while enhancing the content of A-chain, rapidly digestible starch, and resistant starch compared with EB post-treatment. This innovative study provides a theoretical basis for the potential applicability of EB irradiation in modifying the properties of DH starch.

引用

页码：564 / 575

页数：12

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