Coffea robusta samples contain significantly higher levels of reducing substances than Coffea arabica samples (p < 0.001), indicating a species-dependent difference in antioxidant precursor content in unroasted coffee.

Source: In vitro antioxidant and ex vivo protective activities of green and roasted coffee.

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports

8score

Challenges

0score

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

Quantitative

1 study reviewed

In plain English

Robusta coffee beans have more of the natural compounds that can turn into antioxidants than Arabica beans—before they’re roasted.

See the scientific wording

Coffea robusta samples contain significantly higher levels of reducing substances than Coffea arabica samples (p < 0.001), indicating a species-dependent difference in antioxidant precursor content in unroasted coffee.

What the research says

1 study

Study: In vitro antioxidant and ex vivo protective activities of green and roasted coffee.
The study found that unroasted robusta coffee has more of the compounds that can turn into antioxidants than unroasted arabica coffee, which is exactly what the claim says.

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

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