Summary
This 2012 field study evaluated three early potato cultivars (Arinda, Ditta, Nicola) grown under organic and conventional systems in a Mediterranean context. Organic production systems produced potatoes with significantly higher total phenolic compounds, substantially lower nitrate levels, reduced soluble sugars, and elevated dry matter—characteristics that enhanced sensory quality post-frying and suitability for industrial processing. Cultivar choice was identified as equally important as production system in determining overall tuber quality.
Regional applicability
This study was conducted in Mediterranean regions (likely Italy or southern Europe) where early potato production is commercially significant. The findings are relevant to UK potato growers and processors considering organic certification, though UK climate and soil conditions differ; cultivar-specific responses and nitrate accumulation patterns may vary under cooler, higher-rainfall conditions typical of British cultivation.
Key measures
Total phenolic content, nitrate concentration, soluble sugars, dry matter content, sensory evaluation (taste, flesh crispness post-frying)
Outcomes reported
The study compared nutritional composition (total phenolics, nitrates, soluble sugars, dry matter) and sensory characteristics (taste, texture after frying) of three early potato cultivars grown under organic versus conventional management. Organic production yielded potatoes with higher total phenolic content, lower nitrate levels, lower soluble sugars, and higher dry matter content, with improved sensory performance in fried product.
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