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Oat arabinoxylans and their potential glycemic index-lowering role: an in vitro study

Barjuan Grau, Anna LU ; Mohan, Karthik Vishaal LU ; Tovar, Juscelino LU orcid and Zambrano, Jose LU (2023) In International Journal of Food Properties 26(1). p.1815-1821
Abstract
Oat (Avena sativa) is a cereal crop rich in dietary fibers, which are generally considered beneficial for human health. The objective of this work was to investigate the in vitro starch digestibility-reducing effect of the flour of a high arabinoxylan (AX) content (6.1%) oat line obtained from a random mutagenized oat population, compared to the original variety as a reference. The effect of the oat flours was tested on gelatinized potato starch as a dietary starch model, using a digestion dialysis method to calculate the predicted Glycaemic Index (pGI). The high AX flour reduced the potato starch pGI to larger extent than the flour from the original line. The pGI-lowering effect of the AX in the mutant line was confirmed by its... (More)
Oat (Avena sativa) is a cereal crop rich in dietary fibers, which are generally considered beneficial for human health. The objective of this work was to investigate the in vitro starch digestibility-reducing effect of the flour of a high arabinoxylan (AX) content (6.1%) oat line obtained from a random mutagenized oat population, compared to the original variety as a reference. The effect of the oat flours was tested on gelatinized potato starch as a dietary starch model, using a digestion dialysis method to calculate the predicted Glycaemic Index (pGI). The high AX flour reduced the potato starch pGI to larger extent than the flour from the original line. The pGI-lowering effect of the AX in the mutant line was confirmed by its attenuation following pre-treatment of the flour with xylanase. The larger pGI-lowering effect of the high AX oat line suggested this type of mutant as a potential functional food/ingredient for better management of postprandial glycemic responses. (Less)
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author
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
International Journal of Food Properties
volume
26
issue
1
pages
7 pages
publisher
Taylor & Francis
external identifiers
  • scopus:85165222851
ISSN
1532-2386
DOI
10.1080/10942912.2023.2233711
language
English
LU publication?
yes
id
d4a27c6f-11e1-4c5b-b258-9029e766ca98
date added to LUP
2023-09-15 17:08:46
date last changed
2024-06-14 06:10:18
@article{d4a27c6f-11e1-4c5b-b258-9029e766ca98,
  abstract     = {{Oat (Avena sativa) is a cereal crop rich in dietary fibers, which are generally considered beneficial for human health. The objective of this work was to investigate the in vitro starch digestibility-reducing effect of the flour of a high arabinoxylan (AX) content (6.1%) oat line obtained from a random mutagenized oat population, compared to the original variety as a reference. The effect of the oat flours was tested on gelatinized potato starch as a dietary starch model, using a digestion dialysis method to calculate the predicted Glycaemic Index (pGI). The high AX flour reduced the potato starch pGI to larger extent than the flour from the original line. The pGI-lowering effect of the AX in the mutant line was confirmed by its attenuation following pre-treatment of the flour with xylanase. The larger pGI-lowering effect of the high AX oat line suggested this type of mutant as a potential functional food/ingredient for better management of postprandial glycemic responses.}},
  author       = {{Barjuan Grau, Anna and Mohan, Karthik Vishaal and Tovar, Juscelino and Zambrano, Jose}},
  issn         = {{1532-2386}},
  language     = {{eng}},
  month        = {{07}},
  number       = {{1}},
  pages        = {{1815--1821}},
  publisher    = {{Taylor & Francis}},
  series       = {{International Journal of Food Properties}},
  title        = {{Oat arabinoxylans and their potential glycemic index-lowering role: an in vitro study}},
  url          = {{http://dx.doi.org/10.1080/10942912.2023.2233711}},
  doi          = {{10.1080/10942912.2023.2233711}},
  volume       = {{26}},
  year         = {{2023}},
}