期刊
CARBOHYDRATE POLYMERS
卷 196, 期 -, 页码 422-426出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2018.05.049
关键词
Starch; UPLC; Size exclusion chromatography; Molecular structure; Chain length distribution
资金
- Biotechnology and Biological Sciences Research Council (BBSRC) Institute Strategic Programme Grant Food, Innovation Health [BB/ R012512/1]
- BBSRC [BB/ J004561/1, BB/P012523/1]
- John Innes Foundation
- Department for Environment, Food and Rural Affairs (Defra) [CH0103]
- BBSRC [BBS/E/J/000CA392, BBS/E/F/000PR10346, BBS/E/F/00044425, BB/L025531/1, BBS/E/F/000PR10345, BBS/E/J/000C0653, BBS/E/F/00044427, BBS/E/J/000CA542, BB/H009787/1, BB/P018386/1, BBS/E/J/000CA553] Funding Source: UKRI
Starch has a complex molecular structure, with properties dependent on the relative chain lengths and branching structure of its constituent molecules, which varies due to polymorphisms in starch biosynthetic genes, as well as environmental factors. Here we present the application of ultra-high performance size exclusion chromatography to the separation of starch chains from plant seeds. Several methods, have been used to analyse chain length distributions in starch, all with limitations in terms of analysis time, sample preparation and molecular weight range. Here we demonstrate that chain length distributions can be obtained with dramatically reduced analysis time using ultra-high performance size exclusion chromatography. The method may also show improvements in resolution of some fine structural features. Understanding links between starch fine structure and biosynthetic genes will allow bioengineering of starches with tailored properties. This technique may have application to the size separation and resolution of a range of biopolymers of value to the food, drink and pharmaceutical industries.
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