Chemical kinetics, thermodynamics and inactivation kinetics of dextransucrase activity by ultrasound treatment

Lan, Weibing; Chen, Shan

doi:10.1007/s11144-020-01728-5

Cited by 9 publications

(7 citation statements)

References 52 publications

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“…The Δ G value decreased by 0.38% demonstrating that the catalytic activity of the enzyme enhanced, and there is an easy occurrence of enzymatic reactions. The observed trends for the relationship between ln k and 1/ T as per the Arrhenius equation and relationship between ln ( k / T ) and 1/ T as per the Eyring equation are demonstrated in Figure (a) and (b) . Nadar and Rathod also studied the effect of ultrasound on thermodynamic parameters for two commercial forms of lipase enzyme (Thermomyceslanuginosus (TL) lipase and Candida antarctica lipase B (CALB)) using an ultrasonic horn.…”

Section: Effect Of Ultrasonic Treatment On Thermodynamic Properties O...mentioning

confidence: 97%

“…Plots of ln k versus 1/ T (a) and ln ( k / T ) versus 1/ T (b). The continuous lines represent the results of (a) Arrhenius plot and (b) Eyring transition state theory equation . Reproduced with permission from ref .…”

Section: Effect Of Ultrasonic Treatment On Thermodynamic Properties O...mentioning

confidence: 99%

Section: Effect Of Ultrasonic Treatment On Thermodynamic Properties O...mentioning

confidence: 99%

“…The observed trends for the relationship between ln k and 1/T as per the Arrhenius equation and relationship between ln (k/T) and 1/T as per the Eyring equation are demonstrated in Figure 15(a) and (b). 42 Nadar and Rathod 43 also studied the effect of ultrasound on thermodynamic parameters for two commercial forms of lipase enzyme (Thermomyceslanuginosus (TL) lipase and Candida antarctica lipase B (CALB)) using an ultrasonic horn. It was reported that activation energies for both enzymes, TL and CALB after treatment with ultrasound were reduced to 12.11 and 19.87 kJ/mol which indicates an easy occurrence of a catalytic reaction by treated lipases as compared to untreated forms.…”

Section: Effect Of Ultrasonic Treatment Onmentioning

confidence: 99%

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Ultrasound-Assisted Intensification of Activity of Free and Immobilized Enzymes: A Review

Priya

Gogate

2021

Ind. Eng. Chem. Res.

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Ultrasound has shown considerable promise for various applications in food science and biotechnology. In the past, ultrasound has been used intensively to inactivate the enzyme, but today, ultrasound is also considered efficient to activate the enzyme by altering structural conformation under mild controlled conditions. The present review analyzes the governing mechanisms for intensification along with elucidating the effects of ultrasound parameters on enzyme activity. Different ultrasound parameters considered in the analysis include duty cycle, ultrasonic frequency, intensity/power, amplitude, and treatment time, whereas additional process parameters considered include temperature, pH, and enzyme concentration/nature of the medium. The review also provides a discussion on the effect of ultrasound on thermodynamic (activation energy, enthalpy, entropy, and free energy) and kinetic (V max , K m , and catalytic efficiency) parameters to highlight the changes in the design parameters. Results for the different spectroscopic techniques such as circular dichroism and fluorescence spectroscopy have also been described to examine the alteration in structural configuration for free and immobilized enzymes after treatment with ultrasound. Overall, this review has conclusively demonstrated that ultrasonic treatment shows an increase in enzymatic activity under an optimized set of treatment conditions also leading to beneficial processing in enzyme-based applications.

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Section: Effect Of Ultrasonic Treatment On Thermodynamic Properties O...mentioning

confidence: 97%

Section: Effect Of Ultrasonic Treatment On Thermodynamic Properties O...mentioning

confidence: 99%

Section: Effect Of Ultrasonic Treatment On Thermodynamic Properties O...mentioning

confidence: 99%

Section: Effect Of Ultrasonic Treatment Onmentioning

confidence: 99%

See 2 more Smart Citations

Ultrasound-Assisted Intensification of Activity of Free and Immobilized Enzymes: A Review

Priya

Gogate

2021

Ind. Eng. Chem. Res.

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show abstract

“…The kinetic characteristics of enzyme reactions provide insights into the underlying mechanism of enzyme-substrate interactions and inhibitory effects of substrates, which can further help to find the most effective strategy to improve the conversion [20,21]. Interestingly, the kinetic parameters under UI were significantly altered compared with those under mechanical shaking.…”

Section: Introductionmentioning

confidence: 99%

Ultrasound-assisted lipase-catalyzed synthesis of ethyl acetate: process optimization and kinetic study

Zhang

Liang

Abdo

et al. 2021

Biotechnology & Biotechnological Equipment

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Enzymolysis kinetics, thermodynamics and structural property of brewer’s spent grain protein pretreated with ultrasound

Yang

Coldea

et al. 2022

Food and Bioproducts Processing

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Chemical kinetics, thermodynamics and inactivation kinetics of dextransucrase activity by ultrasound treatment

Cited by 9 publications

References 52 publications

Ultrasound-Assisted Intensification of Activity of Free and Immobilized Enzymes: A Review

Ultrasound-Assisted Intensification of Activity of Free and Immobilized Enzymes: A Review

Ultrasound-assisted lipase-catalyzed synthesis of ethyl acetate: process optimization and kinetic study

Enzymolysis kinetics, thermodynamics and structural property of brewer’s spent grain protein pretreated with ultrasound

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