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) | ** | ** | ** | ** | ** |