Table 5.
Change in inhibition effect (%)1) of grape seed tea extracted from grape seeds which were roasted at different condition.

Roasting Temp. (°C) Roasting time (min)
10 20 30 40 50 60
150 74.9±1.4c2) 78.0±1.5a 80.1±1.8a 81.2±1.8a 81.2±1.7a 78.4±1.6a
160 79.2±1.6a 79.2±1.7a 77.0±1.2b 77.2±1.3b 78.8±1.8ab 72.5±1.0b
170 76.0±1.5b 78.2±1.5a 79.9±1.8ab 78.4±1.6a 77.6±1.8b 76.4±1.2a
180 79.8±1.7a 78.1±1.6a 77.0±1.4ab 77.0±1.4b 75.2±1.2b 73.1±1.0b
190 75.8±0.9bc 77.4±1.3a 80.7±1.6a 79.1±1.5a 78.5±1.7ab 77.2±1.3a
Inhibition effect of grape seed tea extracted from unroasted grape seed was 66.9±0.5 %.
Means in the same column bearing different superscripts are significantly different (p < 0.05).