Multi-scale structure of A- and B-type granules of normal and waxy hull-less barley starch

Xiaojing Chen; Mengting Ma; Xingxun Liu; Chuangchuang Zhang; Zekun Xu; Haitao Li; Zhongquan Sui; Harold Corke

doi:10.1016/j.ijbiomac.2021.12.092

Multi-scale structure of A- and B-type granules of normal and waxy hull-less barley starch

Xiaojing Chen, Mengting Ma, Xingxun Liu, Chuangchuang Zhang, Zekun Xu, Haitao Li^*, Zhongquan Sui^*, Harold Corke

^*Corresponding author for this work

Biotechnology and Food Engineering

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

The multi-scale structure of combined (A- and B- type granules), A-type, and B-type granules from normal (NHB) and waxy hull-less barley (WHB) starch was studied, including crystalline structure, molecular branching, nanostructural and fractal characteristics. Particle size distribution was applied to determine the separation purity (>95%), and micrography was used to distinguish between the A-type and B-type granules. Lacking amylose, WHB had higher relative crystallinity, gelatinization temperature, enthalpy, level of scattering intensity and uniformity of orientation of double helices than NHB starch. Generally, B-type granules had higher gelatinization temperature, lower enthalpy, greater relative crystallinity, higher ratio of crystalline to amorphous region, more fa chains in amylopectin, and thicker semi-crystalline lamellae than A-type and combined granules. The results showed that the multi-scale structure of A-type and B-type granules differed greatly, and the characteristics of combined granules were not the same as those of its two constituent granule fractions.

Original language	English
Pages (from-to)	42-49
Number of pages	8
Journal	International Journal of Biological Macromolecules
Volume	200
DOIs	https://doi.org/10.1016/j.ijbiomac.2021.12.092 https://doi.org/10.1016/j.ijbiomac.2021.12.092
State	Published - 1 Mar 2022

Keywords

Hull-less barley
Molecular structure
B-type granule
A-type granule

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title = "Multi-scale structure of A- and B-type granules of normal and waxy hull-less barley starch",

abstract = "The multi-scale structure of combined (A- and B- type granules), A-type, and B-type granules from normal (NHB) and waxy hull-less barley (WHB) starch was studied, including crystalline structure, molecular branching, nanostructural and fractal characteristics. Particle size distribution was applied to determine the separation purity (>95%), and micrography was used to distinguish between the A-type and B-type granules. Lacking amylose, WHB had higher relative crystallinity, gelatinization temperature, enthalpy, level of scattering intensity and uniformity of orientation of double helices than NHB starch. Generally, B-type granules had higher gelatinization temperature, lower enthalpy, greater relative crystallinity, higher ratio of crystalline to amorphous region, more fa chains in amylopectin, and thicker semi-crystalline lamellae than A-type and combined granules. The results showed that the multi-scale structure of A-type and B-type granules differed greatly, and the characteristics of combined granules were not the same as those of its two constituent granule fractions.",

keywords = "Hull-less barley, Molecular structure, B-type granule, A-type granule",

author = "Xiaojing Chen and Mengting Ma and Xingxun Liu and Chuangchuang Zhang and Zekun Xu and Haitao Li and Zhongquan Sui and Harold Corke",

note = "Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.",

year = "2022",

month = mar,

day = "1",

doi = "10.1016/j.ijbiomac.2021.12.092",

language = "英语",

volume = "200",

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TY - JOUR

T1 - Multi-scale structure of A- and B-type granules of normal and waxy hull-less barley starch

AU - Chen, Xiaojing

AU - Ma, Mengting

AU - Liu, Xingxun

AU - Zhang, Chuangchuang

AU - Xu, Zekun

AU - Li, Haitao

AU - Sui, Zhongquan

AU - Corke, Harold

PY - 2022/3/1

Y1 - 2022/3/1

N2 - The multi-scale structure of combined (A- and B- type granules), A-type, and B-type granules from normal (NHB) and waxy hull-less barley (WHB) starch was studied, including crystalline structure, molecular branching, nanostructural and fractal characteristics. Particle size distribution was applied to determine the separation purity (>95%), and micrography was used to distinguish between the A-type and B-type granules. Lacking amylose, WHB had higher relative crystallinity, gelatinization temperature, enthalpy, level of scattering intensity and uniformity of orientation of double helices than NHB starch. Generally, B-type granules had higher gelatinization temperature, lower enthalpy, greater relative crystallinity, higher ratio of crystalline to amorphous region, more fa chains in amylopectin, and thicker semi-crystalline lamellae than A-type and combined granules. The results showed that the multi-scale structure of A-type and B-type granules differed greatly, and the characteristics of combined granules were not the same as those of its two constituent granule fractions.

AB - The multi-scale structure of combined (A- and B- type granules), A-type, and B-type granules from normal (NHB) and waxy hull-less barley (WHB) starch was studied, including crystalline structure, molecular branching, nanostructural and fractal characteristics. Particle size distribution was applied to determine the separation purity (>95%), and micrography was used to distinguish between the A-type and B-type granules. Lacking amylose, WHB had higher relative crystallinity, gelatinization temperature, enthalpy, level of scattering intensity and uniformity of orientation of double helices than NHB starch. Generally, B-type granules had higher gelatinization temperature, lower enthalpy, greater relative crystallinity, higher ratio of crystalline to amorphous region, more fa chains in amylopectin, and thicker semi-crystalline lamellae than A-type and combined granules. The results showed that the multi-scale structure of A-type and B-type granules differed greatly, and the characteristics of combined granules were not the same as those of its two constituent granule fractions.

KW - Hull-less barley

KW - Molecular structure

KW - B-type granule

KW - A-type granule

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U2 - 10.1016/j.ijbiomac.2021.12.092

DO - 10.1016/j.ijbiomac.2021.12.092

M3 - 文章

C2 - 34979189

SN - 0141-8130

VL - 200

SP - 42

EP - 49

JO - International Journal of Biological Macromolecules

JF - International Journal of Biological Macromolecules

ER -

Multi-scale structure of A- and B-type granules of normal and waxy hull-less barley starch

Abstract

Keywords

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