Table 2.
Overview of treatments in literature, with conditions and resulting fiber fineness and fiber strength [51,62,23].
| Reference | Formulation | Conditions | Fineness (Mic) | Strength (g/tex) | |
|---|---|---|---|---|---|
| [58] | A | 0.05 % Flaxzyme + 50 mmole EDTA | 40 °C, pH 5.0, 4 h | 5.2 ± 0.1 | 17.35 |
| B | 0.30% Flaxzyme + 50 mmole EDTA | 40 °C, pH 5.0, 4 h | 4.85 | 11.7 | |
| C | 0.30 % Flaxzyme | 40 °C, pH 5.0, 4 h | 5.2 | 12.85 | |
| D | 3.0 % Flaxzyme | 40 °C, pH 5.0, 4 h | 4.5 | 5.2 | |
| [60] | E | 0.30 % Vz + 50 mM EDTA | 40 °C, pH 5.0, 24 h | 3.9 ± 0.1 | 13.0 ± 1.3 |
| F | 0.30 % Vz + 25 mM EDTA | 40 °C, pH 5.0, 24 h | 4.6 ± 0.1 | 15.8 ± 1.8 | |
| G | 0.05 % Vz + 50 mM EDTA | 40 °C, pH 5.0, 24 h | 5.8 ± 0.1 | 24.0 ± 2.0 | |
| H | 0.05 % Vz + 25 mM EDTA | 40 °C, pH 5.0, 24 h | 5.7 ± 0.1 | 20.9 ± 1.3 | |
| [62] | 0 % Vz + 0 % Mayoquest | 40 °C, pH 5.0, 24 h | 8.0 ± 0.0 | 26.9 ± 0.8 | |
| 0.05 % Vz + 0.4 % Mayoquest | 40 °C, pH 5.0, 24 h | 7.7 ± 0.1 | 24.0 ± 1.4 | ||
| 0.05 % Vz + 0.7 % Mayoquest | 40 °C, pH 5.0, 24 h | 7.9 ± 0.0 | 23.9 ± 5.5 | ||
| 0.05 % Vz + 1.8 % Mayoquest | 40 °C, pH 5.0, 24 h | 7.7 ± 0.1 | 24.6 ± 2.3 | ||
| 0.1 % Vz + 0.4 % Mayoquest | 40 °C, pH 5.0, 24 h | 7.6 ± 0.1 | 20.3 ± 2.5 | ||
| 0.1 % Vz + 0.7 % Mayoquest | 40 °C, pH 5.0, 24 h | 7.6 ± 0.1 | 17.9 ± 2.3 | ||
| 0.1 % Vz + 1.8 % Mayoquest | 40 °C, pH 5.0, 24 h | 7.1 ± 0.0 | 20.3 ± 1.8 | ||
| 0.2 % Vz + 0.4 % Mayoquest | 40 °C, pH 5.0, 24 h | 7.4 ± 0.1 | 18.1 ± 0.6 | ||
| 0.2 % Vz + 0.7 % Mayoquest | 40 °C, pH 5.0, 24 h | 7.0 ± 0.5 | 17.6 ± 0.0 | ||
| 0.2 % Vz + 1.8 % Mayoquest | 40 °C, pH 5.0, 24 h | 6.9 ± 0.4 | 17.7 ± 1.4 | ||
| 0.3 % Vz + 0.4 % Mayoquest | 40 °C, pH 5.0, 24 h | 7.5 ± 0.7 | 15.3 ± 0.5 | ||
| 0.3 % Vz + 0.7 % Mayoquest | 40 °C, pH 5.0, 24 h | 6.9 ± 0.1 | 18.1 ± 1.3 | ||
| 0.3 % Vz + 1.8 % Mayoquest | 40 °C, pH 5.0, 24 h | 6.9 ± 0.0 | 19.5 ± 0.7 | ||
| [23] | I | PGase + 18 mM EDTA | 40 °C, pH 5.0, 20 h | 6.8 ± 0.7 | 40.6 ± 1.9 |
| J | 0.05 % Viscozyme + 18 mM EDTA | 40 °C, pH 5.0, 20 h | 7.1 ± 0.6 | 32.2 ± 2.2 | |
| [51] | K | EPG + 50 mmole oxalic acid | 40 °C, pH 6.0, 24 h | – | 23 ± 6 |
| L | SP249 + 50 mmole oxalic acid | 40 °C, pH 5.0, 24 h | – | 42 ± 11 | |
| M | EPG + 50 mmole EDTA | 40 °C, pH 6.0, 24 h | 7.7 | 41 ± 5.2 | |
| N | SP249 + 50 mmole EDTA | 40 °C, pH 5.0, 24 h | 7.5 | 40 ± 5.1 |
I: Polygalacturonase enzyme was obtained from Aspergillus niger and was used at an activity equal to 0.05% Viscozyme [23] K:.Treatment with EPG from Rhizopus oryzae was performed with an activity of 18.1 U/ml at a small scale (12 stems). L: SP249 treatment was performed with an equal activity as treatment G, on a small scale (12 stems). M: Treatment with EPG from Rhizopus oryzae was performed with an activity of 18.1 U/ml at a pilot scale of 50 g flax stems. N: SP249 treatment was performed at an equal activity as treatment I, at a pilot scale of 50 g flax stems. [51].