Research Article
Azadirachta indica Mediated Bioactive Lyocell Yarn: Chemical and Colour Characterization
Table 5
Efficiency of antimicrobial treatment according to bromophenol Blue test scale.
| Sample | Concentration of extract % (owf) | Mordent | Symbolic rating BPB scale | Remark |
| Undyed lyocell | — | — | − − | Undertreated |
| Lyocellyarn dyed with water extract | 5 | — | − | Undertreated | 10 | — | − + | Slightly undertreated | 15 | — | + | Good treatment | 15 | CuSO4 | +++ | Slightly overtreated | 15 | Al2(SO4)3 | ++ | Good treatment | 15 | TKP | + | Good treatment | 15 | Harad | + | Good treatment |
| Lyocell yarn dyed with methanolic extract | 5 | — | − | Undertreated | 10 | — | − + | Slightly undertreated | 15 | — | + | Good treatment | 15 | CuSO4 | +++ | Slightly overtreated | 15 | Al2(SO4)3 | ++ | Good treatment | 15 | TKP | + | Good treatment | 15 | Harad | + | Good treatment |
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Note: Concentration of mordant 6% owf using premordanting technique.
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