extremely significantp < 0.001
Four volatile compounds, including 4-(2,4,4-Trimethyl-cyclohexa-1,5-dienyl)-but-3-en-2-one, alpha -ionone, 2-pentadecanone and 5-ethyl-2,2,3-trimethyl-heptane, exhibited extremely significant ( p < 0.001) positive correlations with stale odor score but negative correlations with aroma sensory score.