Effects of CO₃, Cl and SO₄ Ions on Parameters of Sensory Evaluations of Carrots (Daucus carota L.)

Abstract

Sensory evaluation tests were conducted on raw carrots which were grown using fertilizers containing CO₃, Cl or SO₄ ions. When carrot plants were grown under relatively wet soil conditions (6.2 kPa), SO₄-treated carrots were preferred over CO₃- or Cl-treated carrots. There was a significant positive Spearman's rank correlation between "preference" and "sweetness", which suggested that SO₄-treated carrots were preferred because of their strong sense of sweetness. However, the more intense sweetness in SO₄-treated carrots could not be explained by their sugar, organic acid, amino acid or ortophosphoric acid contents.