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. 2015 Nov 18;6:1272. doi: 10.3389/fmicb.2015.01272

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Copyright © 2015 Ungerfeld.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Response of Gibbs energy of acetate conversion to butyrate (ΔG_{Ac to But}) to the inhibition of CH₄ production expressed as a percentage of CH₄ production decrease relative to control treatments. Treatment means are adjusted by the effect of their experiment. Batch culture: y = −4.80 (±1.50; p = 0.002) + exp (p < 0.001) − 0.16 (±0.020; p < 0.001) x − 0.00079 (±0.00044; p = 0.074) (x − 46.6)² + exp × x (p < 0.001); R² = 0.92 (p < 0.001); Continuous culture: y = 2.21 (±1.50; p = 0.15) − 0.17 (±0.022; p < 0.001) x − 0.0019 (±0.00072; p = 0.016) (x − 46.7)² + exp × x (p = 0.030); R² = 0.87 (p < 0.001).