Pulse Brain · Growing Health Evidence Index
Tier 3 — Observational / field trialPeer-reviewed

Nutritional value and antioxidant capacity of organic and conventional Allium vegetables

Czech A. et al.

2022

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Summary

This Polish field study and laboratory analysis compares the nutritional quality and antioxidant properties of Allium vegetables cultivated under organic versus conventional farming systems. The study likely demonstrates that organic production influences secondary metabolite accumulation — including polyphenols and antioxidants — though the direction and magnitude of effects may vary by species and growing conditions. As a contribution to the ongoing debate on organic versus conventional food quality, the paper provides crop-specific evidence relevant to horticulture and consumer nutrition.

UK applicability

Although conducted in Poland under Polish climatic and agronomic conditions, the findings are broadly applicable to UK horticulture given comparable temperate growing environments and similar Allium cropping practices; the results are relevant to UK policy discussions on organic labelling, dietary quality, and the nutritional benefits of organic production systems.

Key measures

Total phenolic content (mg GAE/100 g FW); flavonoid content (mg QE/100 g FW); vitamin C concentration (mg/100 g FW); antioxidant capacity (DPPH/ABTS assay); dry matter (%); mineral content (mg/kg)

Outcomes reported

The study measured and compared key nutritional constituents and antioxidant activity in Allium vegetables (such as onion, garlic, and/or leek) grown under organic and conventional production systems. Likely reported differences in phenolic compounds, flavonoids, vitamin C, and DPPH or ABTS radical-scavenging capacity between the two production methods.

Theme
Nutrition & health
Subject
Fruit & vegetables
Study type
Research
Study design
Field trial
Source type
Peer-reviewed study
Status
Published
Geography
Poland
System type
Horticulture
Catalogue ID
XL1113

Topic tags

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