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. 2014 Jul 10;28(2):248–258. doi: 10.1080/13102818.2014.913402

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© 2014 The Author(s). Published by Taylor & Francis.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The moral rights of the named author(s) have been asserted.

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Figure 3. — Effect of metal ions on purified enzyme activity (A) and decolourization of methyl orange (B), crystal violet (C) and malachite green (D). Metal ion concentrations were 1 mmol·L⁻¹. Measurements were performed under optimum conditions. Reactions were stopped with 50 μL of 0.25% NaF after various durations. Values are means ± SD of three independent experiments.