Estimation of the Q10 value; the temperature coefficient for the growth of Pseudomonas sp. aq5-04 on phenol

Abstract

The Q10 value is tied to an increase in the surrounding temperature with an increase in 10 â—¦C, and usually resulted in a doubling of the reaction rate. When this happens, the Q10 value for the reaction is 2. This value holds true to numerous biological reactions. To date, the Q10 value for the biodegradation of phenol is almost not reported. The Q10 values can be determined from the Arrhenius plots. In this study, the growth rate or biodegradation rates in logarithmic value for the bacterium Pseudomonas sp. AQ5-04 was plotted against 1000/temperature (Kelvin) and the slope of the Arrhenius curve is the value of the Ea, which was utilized to obtain the Q10. The value obtained in this work was 1.834, which is slightly lower than the normal range of between 2 and 3 for the biodegradation rates of hydrocarbon in general and shows that this bacterium is a very efficient phenol-degrading bacterium.

Activation energy, Temperature Coefficient and Q10 Value Estimations of the Growth of Alcaligenes sp. YLA11 on Diesel

“…In another contrasting study, the growth on phenol by Pseudomonas sp. AQ5-04 shows an activation energy of 38.92 kJ/mol from 15 to 30 °C and 11.34 kJ/mol from 35-45 °C [25]. It takes a lot of energy for the bacterium to metabolize phenolics at high activation energies.…”

“…It has been shown in a variety of conditions using a variety of substrates, such as the deolorization of various dyes, that the activation energy, which is dependent on the change in temperature, plays an important role in the metabolic activity of microorganisms. This has been demonstrated both theoretically and experimentally [19,[35][36][37][38], chromate reduction [32,33] and phenolics biodegradation [18,[25][26][27][28] and acrylamide [21]. Although the specifics of the process that underlies the shift are not yet known, there are two hypotheses that offer two possible explanations for the phenomenon.…”

“…strain AQ5-04 was 1.834. [25] whereas a Q10 value of 2.17 was determined to be appropriate for the growth rate of this organism when fed diesel. In another study on the biodegradation of acrylamide, the Q10 value was reported to be 2.17, which is lower [21] According to our calculations (Fig.…”

Activation energy, Temperature Coefficient and Q10 Value Estimations of the Growth of Serratia marcescens strain DRY6 on SDS

“…A contrasting study shows the growth on phenol from 15 to 30 °C by Pseudomonas sp. AQ5-04 of 38.92 Kj/mol and from 35-45 °C, the activation energy is 11.34 Kj/mol [30]. Note: (TPPS) Meso-tetrakis (4-sulfonatophenyl) porphyrin mediator…”

“…The Q10 value for the phenol degradation by Pseudomonas sp. strain AQ5-04 was 1.834 [30] while a Q10 value of 2.17 was calculated for the growth rate of this organism on SDS. A lower Q10 value of 2.17 is reported in another study on acrylamide biodegradation by the Antarctic bacterium Pseudomonas sp.…”