Table 3.
Tukey’s honest significance test for stilbenes (trans-resveratrol, trans-ε-viniferin and r2-viniferin) in µg/g d.w. for different particle sizes of grape cane. (Two-way ANOVA: ** p < 0.01, * p < 0.05, n.s. = not significant. Values are means and standard deviations calculated from three measurements).
Extraction | {14} | {17} | {8} | {13} | {16} | {9} |
---|---|---|---|---|---|---|
Resveratrol | 3152.3 | 2511.1 | 4189.0 | 5324.1 | 4868.5 | 4109.0 |
Viniferin | 869.8 | 727.3 | 563.1 | 2074.1 | 1776.7 | 1388.8 |
r2-viniferin | 78.1 | 69.1 | 108.7 | 507.5 | 422.7 | 286.2 |
{14} | ||||||
FBE MeOH | ||||||
(C) | ||||||
{17} | n.s. | |||||
Reflux MeOH | n.s. | |||||
1 h (C) | n.s. | |||||
{8} | ** | ** | ||||
Lab. T. MeOH | ** | n.s. | ||||
7 d (C) | n.s. | n.s. | ||||
{13} | ** | ** | ** | |||
FBE MeOH | ** | ** | ** | |||
(P) | ** | ** | ** | |||
{16} | ** | ** | n.s. | n.s. | ||
Reflux MeOH | ** | ** | ** | ** | ||
1 h (P) | ** | ** | ** | * | ||
{9} | ** | ** | n.s. | ** | * | |
Lab. T. MeOH | ** | ** | ** | ** | ** | |
7 d (P) | ** | ** | ** | ** | ** |