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Structural and physicochemical properties of bracken fern (Pteridium aquilinum) starch

INTRODUCTION: Bracken fern (Pteridium aquilinum) starch is a non-mainstream, litter-researched starch, thus the starch characteristics remain largely unknown. METHODS: The structural and physicochemical properties of two bracken starches were systematically investigated, by use of various techniques...

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Autores principales: Li, Kehu, Zhang, Tongze, Ren, Huanhuan, Zhao, Wei, Hong, Siqi, Ge, Yongyi, Li, Xiaoqiong, Corke, Harold
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10318185/
https://www.ncbi.nlm.nih.gov/pubmed/37408989
http://dx.doi.org/10.3389/fnut.2023.1201357
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author Li, Kehu
Zhang, Tongze
Ren, Huanhuan
Zhao, Wei
Hong, Siqi
Ge, Yongyi
Li, Xiaoqiong
Corke, Harold
author_facet Li, Kehu
Zhang, Tongze
Ren, Huanhuan
Zhao, Wei
Hong, Siqi
Ge, Yongyi
Li, Xiaoqiong
Corke, Harold
author_sort Li, Kehu
collection PubMed
description INTRODUCTION: Bracken fern (Pteridium aquilinum) starch is a non-mainstream, litter-researched starch, thus the starch characteristics remain largely unknown. METHODS: The structural and physicochemical properties of two bracken starches were systematically investigated, by use of various techniques that routinely applied in starch analysis. RESULTS AND DISCUSSION: The starches had amylose contents of 22.6 and 24.7%, respectively. The starch granules possessed C-type polymorph with D (4,3) ranging from 18.6 to 24.5 μm. During gelatinization event, the bracken starches showed lower viscosity than typical for rice starch, and lower gelatinization temperature than typical for cereal starches. After gelatinization event, bracken starches formed much softer and sticky gel than rice and potato starch. The molecular weight and branching degree (indexed by Mw, Mn and Rz values) of bracken starches were much higher than starches of many other sources. The branch chain length distributions showed that the bracken starches were structurally similar to some rice varieties (e. g. BP033, Beihan 1#), as reflected by proportions of A, B1, B2, and B3 chains. Notable differences in some starch traits between the two bracken starches were recorded, e. g. amylose content, gel hardness, gelatinization temperature and traits of structural properties. This study provides useful information on the utilization of bracken starch in both food and non-food industries.
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spelling pubmed-103181852023-07-05 Structural and physicochemical properties of bracken fern (Pteridium aquilinum) starch Li, Kehu Zhang, Tongze Ren, Huanhuan Zhao, Wei Hong, Siqi Ge, Yongyi Li, Xiaoqiong Corke, Harold Front Nutr Nutrition INTRODUCTION: Bracken fern (Pteridium aquilinum) starch is a non-mainstream, litter-researched starch, thus the starch characteristics remain largely unknown. METHODS: The structural and physicochemical properties of two bracken starches were systematically investigated, by use of various techniques that routinely applied in starch analysis. RESULTS AND DISCUSSION: The starches had amylose contents of 22.6 and 24.7%, respectively. The starch granules possessed C-type polymorph with D (4,3) ranging from 18.6 to 24.5 μm. During gelatinization event, the bracken starches showed lower viscosity than typical for rice starch, and lower gelatinization temperature than typical for cereal starches. After gelatinization event, bracken starches formed much softer and sticky gel than rice and potato starch. The molecular weight and branching degree (indexed by Mw, Mn and Rz values) of bracken starches were much higher than starches of many other sources. The branch chain length distributions showed that the bracken starches were structurally similar to some rice varieties (e. g. BP033, Beihan 1#), as reflected by proportions of A, B1, B2, and B3 chains. Notable differences in some starch traits between the two bracken starches were recorded, e. g. amylose content, gel hardness, gelatinization temperature and traits of structural properties. This study provides useful information on the utilization of bracken starch in both food and non-food industries. Frontiers Media S.A. 2023-06-20 /pmc/articles/PMC10318185/ /pubmed/37408989 http://dx.doi.org/10.3389/fnut.2023.1201357 Text en Copyright © 2023 Li, Zhang, Ren, Zhao, Hong, Ge, Li and Corke. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Nutrition
Li, Kehu
Zhang, Tongze
Ren, Huanhuan
Zhao, Wei
Hong, Siqi
Ge, Yongyi
Li, Xiaoqiong
Corke, Harold
Structural and physicochemical properties of bracken fern (Pteridium aquilinum) starch
title Structural and physicochemical properties of bracken fern (Pteridium aquilinum) starch
title_full Structural and physicochemical properties of bracken fern (Pteridium aquilinum) starch
title_fullStr Structural and physicochemical properties of bracken fern (Pteridium aquilinum) starch
title_full_unstemmed Structural and physicochemical properties of bracken fern (Pteridium aquilinum) starch
title_short Structural and physicochemical properties of bracken fern (Pteridium aquilinum) starch
title_sort structural and physicochemical properties of bracken fern (pteridium aquilinum) starch
topic Nutrition
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10318185/
https://www.ncbi.nlm.nih.gov/pubmed/37408989
http://dx.doi.org/10.3389/fnut.2023.1201357
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