Wheat starch with young apple polyphenols in lab tests
What it found
In lab tests, wheat starch combined with young apple polyphenols broke down more slowly and made more short-chain fatty acids when fermented by human gut bacteria.
What they found
Animal and lab studies
Starch structure
Gelatinization broke down part of the crystalline structure of the wheat starch. Adding phlorizin reduced how much of that structure was destroyed.
Slower digestion
The wheat starch and phenolic compound complexes slowed the digestion rate and raised the share of resistant starch in the wheat starch.
More short-chain fatty acids
After 24 hours of fermentation with human fecal samples, the wheat starch and young apple polyphenol complex greatly raised short-chain fatty acid levels, especially acetic and propionic acids.
Gut bacteria growth
The same complex boosted the growth of gut bacteria seen as health-promoting, such as Prevotella.
What the authors conclude
“Conclusively, YAP was shown to play a positive role in maintaining blood glucose balance and intestinal health.”
Also in their conclusions
- They conclude that young apple polyphenols play a positive role in maintaining blood glucose balance and intestinal health.
How it was done
The authors wanted to see how young apple polyphenols affect starch digestion and gut bacteria.
They made complexes of wheat starch with young apple polyphenols and with two of its main parts, chlorogenic acid and phlorizin, then gelatinized them. They put the gelatinized samples through lab digestion and fermented what was left with human fecal samples for 24 hours.
What it can’t tell you
- We summarised it from the abstract only.
- These are lab tests, not studies in people. They can't show what happens in the human body.
- The fermentation used human fecal samples in a lab dish, which does not reflect the full gut.
- The work does not show whether eating wheat starch with apple polyphenols has the same effects in a person.
Who paid
- Authors work at
- Shaanxi Normal University, P. R. China
The paper
- Title
- Modulation of gelatinized wheat starch digestion and fermentation profiles by young apple polyphenols in vitro
- Type
- Study
- Evidence
- Animals and lab studies
- Summarised from
- Abstract only
- Cite
- Li D, Yang Y, Yang X, et al (2021). Modulation of gelatinized wheat starch digestion and fermentation profiles by young apple polyphenols in vitro. Food & function. doi:10.1039/d0fo02752aPubMed 33537688DOI
Summary written 26 Sep 2026. Check it against the paper before it changes what you eat. How we summarise papers · Report an error