The Claim

Starch granule-associated lipids competitively bind to the active site of α-amylase with an affinity of −23.46 kcal/mol, reducing the enzyme’s ability to interact with starch molecules and thereby lowering in vitro digestibility.

Source: Removal of starch granule-associated lipids from normal and waxy wheat starches: Effects on properties, retrogradation, digestion, and molecular mechanisms.

What the research says

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Supports
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Challenges
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These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

How it works
1 study reviewed
In plain English

Lipids attached to starch granules bind tightly to the enzyme α-amylase, preventing it from breaking down starch, which reduces starch digestion in laboratory tests.

See the scientific wording

Starch granule-associated lipids competitively bind to the active site of α-amylase with an affinity of −23.46 kcal/mol, reducing the enzyme’s ability to interact with starch molecules and thereby lowering in vitro digestibility.

Why this might work

Lipids attached to starch granules fit into the enzyme's active site like a key in a lock, preventing the enzyme from grabbing and breaking down starch molecules, which results in less starch being digested.

Verified mechanismbased on 1 study

What the research says

1 study
  1. Study: Removal of starch granule-associated lipids from normal and waxy wheat starches: Effects on properties, retrogradation, digestion, and molecular mechanisms.

    The study found that natural fats in wheat starch stick to the enzyme that breaks down starch, like a key blocking a lock. This makes it harder for the enzyme to do its job, so the starch isn’t digested as easily in lab tests.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

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