Abstract
Abstract BACKGROUND: β‐Glucan is a bioactive component of cereal grains that has many potential uses and health‐promoting benefits. Recent research has focused on improving the nutritional value of food by increasing human exposure to β‐glucan. This study looks at the development of a farm‐level baseline model (including scenario analysis) to evaluate the impact of pre‐ and postharvest stages (including genotypic factors, environmental conditions, agronomic factors and storage) on β‐glucan levels in barley. Monte Carlo simulation techniques were employed to model various stages in pre‐ and postharvest processes and to simulate the factors influencing the level of β‐glucan content in both hulled barley (H B ) and hull‐less barley (H LB ) genotypes. RESULTS: The baseline model found that the mean simulated level of β‐glucan was 40.99 and 56.77 g kg −1 for H B and H LB genotypes respectively. A sensitivity analysis highlighted that genotype was the most important parameter in determining the final β‐glucan content (correlation coefficients of 0.66 and 0.78 for H B and H LB respectively), more so than any of the agronomic factors analysed. The scenario analysis highlighted the importance of harvest date (scenario 2) and storage conditions (scenario 3), with a potential 32.6 and 32.7% decrease in β‐glucan (compared with the baseline model) if harvesting is carried out early during physiological maturity (i.e. at growth stage 92) and a potential 20.1 and 19.5% increase in β‐glucan for H B and H LB respectively if storage time is minimised. CONCLUSION: This study predicted the influence of genotypic, pre‐ and postharvest operations on β‐glucan content and thus allows strategies to be identified to influence β‐glucan content in barley products. Copyright © 2008 Society of Chemical Industry
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Claims 8
Claim · model-written summary
The baseline model simulated mean β-glucan of 40.99 g kg −1 in hulled barley.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“mean simulated level of β‐glucan was 40.99 and 56.77 g kg −1 for H B and H LB genotypes respectively.”
t0“barley”
Claim · model-written summary
The baseline model simulated mean β-glucan of 56.77 g kg −1 in hull-less barley.
- Taxon
- barley
.jpg?width=60)
Hordeum vulgaret0 - Material
- H LBe0
- Outcome
- β‐glucane0
- Value
- 56.77 g kg −1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mean simulated level of β‐glucan was 40.99 and 56.77 g kg −1 for H B and H LB genotypes respectively.”
t0“barley”
Claim · model-written summary
Genotype was the strongest analyzed determinant of β-glucan, with correlation 0.66 for hulled barley.
- Taxon
- barleyHordeum vulgaret0
- Material
- H Be0
- Outcome
- β‐glucan contente0
- Value
- 0.66e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“genotype was the most important parameter in determining the final β‐glucan content (correlation coefficients of 0.66 and 0.78 for H B and H LB respectively), more so than any of the agronomic factors analysed.”
t0“barley”
Claim · model-written summary
Genotype was the strongest analyzed determinant of β-glucan, with correlation 0.78 for hull-less barley.
- Taxon
- barleyHordeum vulgaret0
- Material
- H LBe0
- Outcome
- β‐glucan contente0
- Value
- 0.78e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“genotype was the most important parameter in determining the final β‐glucan content (correlation coefficients of 0.66 and 0.78 for H B and H LB respectively), more so than any of the agronomic factors analysed.”
t0“barley”
Claim · model-written summary
Early harvest at physiological maturity reduced modeled hulled barley β-glucan by 32.6% versus baseline.
- Taxon
- barleyHordeum vulgaret0
- Material
- H Be0
- Treatment
- harvesting is carried out early during physiological maturitye0
- Outcome
- β‐glucane0
- Direction
- decreasee0
- Value
- 32.6e0
- Comparator
- baseline modele0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potential 32.6 and 32.7% decrease in β‐glucan (compared with the baseline model) if harvesting is carried out early during physiological maturity (i.e. at growth stage 92) and a potential 20.1 and 19.5% increase in β‐glucan for H B and H LB respectively if storage time is minimised.”
t0“barley”
Claim · model-written summary
Early harvest at physiological maturity reduced modeled hull-less barley β-glucan by 32.7% versus baseline.
- Taxon
- barleyHordeum vulgaret0
- Material
- H LBe0
- Treatment
- harvesting is carried out early during physiological maturitye0
- Outcome
- β‐glucane0
- Direction
- decreasee0
- Value
- 32.7%e0
- Comparator
- baseline modele0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potential 32.6 and 32.7% decrease in β‐glucan (compared with the baseline model) if harvesting is carried out early during physiological maturity (i.e. at growth stage 92) and a potential 20.1 and 19.5% increase in β‐glucan for H B and H LB respectively if storage time is minimised.”
t0“barley”
Claim · model-written summary
Minimizing storage time increased modeled hulled barley β-glucan by 20.1%.
- Taxon
- barleyHordeum vulgaret0
- Material
- H Be0
- Treatment
- storage time is minimisede0
- Outcome
- β‐glucane0
- Direction
- increasee0
- Value
- 20.1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potential 20.1 and 19.5% increase in β‐glucan for H B and H LB respectively if storage time is minimised.”
t0“barley”
Claim · model-written summary
Minimizing storage time increased modeled hull-less barley β-glucan by 19.5%.
- Taxon
- barleyHordeum vulgaret0
- Material
- H LBe0
- Treatment
- storage time is minimisede0
- Outcome
- β‐glucane0
- Direction
- increasee0
- Value
- 19.5%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potential 20.1 and 19.5% increase in β‐glucan for H B and H LB respectively if storage time is minimised.”
t0“barley”
The same questions in other papers
stage · molecular: metabolites · Hordeum vulgare (barley)Positive and negative results
1 in the opposite direction
- positive
storage · molecular: metabolites · Hordeum vulgare (barley)Positive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction
- negative
- negative
- positive
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.