Table 6.
Sensory evaluation of grape seed teas.
Sample 2) | Sensory evaluation 1) |
Color | Burnt Smell | Sweetness | Bitterness & Astringency | Total preference |
Unroasted | 1.00±0.00c3) | 1.00±0.00c | 2.33±0.62a | 1.47±0.52b | 1.47±0.52c |
150°C | 2.00±0.53b | 1.47±0.52bc | 1.87±0.52a | 2.87±0.74ab | 2.33±0.48bc |
160°C | 3.27±0.59ab | 2.20±0.56b | 1.93±0.59a | 2.80±0.56ab | 2.67±0.48b |
170°C | 4.13±0.52a | 2.93±0.70ab | 2.13±0.64a | 2.60±0.51ab | 3.67±0.48a |
180°C | 3.93±0.46ab | 2.60±0.50ab | 1.80±0.41a | 3.60±0.74a | 3.67±0.82ab |
190°C | 3.26±0.46ab | 3.20±0.41a | 1.60±0.51a | 3.13±0.52ab | 2.67±0.72ab |
Sensory scale is 5; Very good,very strong↔1; very weak,very poor.
Sample is 4% (w/w), roasting for 30 min, extraction for 1h.
Means in the same column bearing different superscripts are significantly different (p < 0.05).