PCA plot for aroma release from the nanoemulsions at 24 h for different olive oil concentrations. Olive oil concentrations are 0% (0–1, 0–2, 0–3), 1% (1–1, 1–2, 1–3), 3% (3–1, 3–2, 3–3), 5% (5–1, 5–2, 5–3), 10% (10–1, 10–2, 10–3) and 15% (15–1, 15–2, 15–3)