Summary
This 1999 paper published in the Journal of Agricultural and Food Chemistry provides quantitative analytical data on the micronutrient composition of multiple Brassica oleracea subspecies, comparing carotenoid, tocopherol and ascorbate contents across cultivars such as broccoli, kale, cabbage and cauliflower. The study contributes to the evidence base for understanding within-species nutritional diversity in a widely consumed vegetable family. Its findings are likely relevant to dietary recommendations, food selection guidance and plant breeding programmes aimed at enhancing antioxidant micronutrient density.
UK applicability
Although conducted in the United States, the findings are broadly applicable to UK contexts given that Brassica oleracea subspecies are widely grown and consumed in the UK; the micronutrient profiles documented may inform UK dietary guidelines, horticultural breeding priorities, and nutrient density assessments within the food supply.
Key measures
Carotene concentration (µg/g or mg/100g); tocopherol concentration; ascorbate concentration; variation across Brassica oleracea subspecies
Outcomes reported
The study measured concentrations of carotenoids (alpha- and beta-carotene), tocopherols (vitamin E) and ascorbate (vitamin C) across multiple subspecies of Brassica oleracea, including broccoli, Brussels sprouts, cabbage, cauliflower and kale. Findings likely document substantial variation in micronutrient content between subspecies, providing a comparative nutritional profile of this economically important crop family.
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