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Table 1 Average colour coordinates of different fabrics treated with Quercus robur L. (fruit cups) dye using Salix alba L. (wood ash) as mordant

From: Dyeing and fastness properties of Quercus robur with natural mordants on natural fibre

Methods Colour coordinates
L* a* b* C* h° ΔE
Wool fabric
 Without mordant 73.0 4.3 31.2 31.5 82.0 31.1
 Pre-mordanting 68.2 3.4 28.6 28.8 83.1 24.7
 Simultaneous mordanting 64.5 4.5 27.4 27.7 80.5 27.0
 Post-mordanting 61.8 6.0 28.9 29.5 78.2 30.3
Cotton fabric
Without mordant 80.4 4.5 19.7 20.2 77.0 18.1
 Pre-mordanting 84.6 3.0 16.1 16.4 79.0 12.6
 Simultaneous mordanting 79.5 3.8 17.9 18.3 77.8 26.2
 Post-mordanting 80.4 3.7 18.8 19.2 78.9 17.5
Silk fabric
 Without mordant 65.8 4.8 28.9 29.3 80.5 30.0
 Pre-mordanting 68.0 7.4 25.6 26.7 73.8 26.2
 Simultaneous mordanting 60.7 4.8 24.6 25.0 78.8 31.2
 Post-mordanting 61.7 5.8 18.8 19.6 73.5 28.1
Pashmina fabric
 Without mordant 55.7 4.3 25.5 25.9 80.3 26.9
 Pre-mordanting 60.4 7.2 29.4 30.2 76.2 24.9
 Simultaneous mordanting 55.5 4.4 22.3 22.8 78.8 26.2
 Post-mordanting 47.9 3.2 23.7 23.9 82.3 33.7