Thermodynamic analysis of serogroup C antigen production by Neisseria meningitidis

Değerli, Bahar; Küçük, Kübra; Sorgüven, Esra; Özilgen, Mustafa

doi:10.1504/ijex.2015.067297

Cited by 7 publications

(5 citation statements)

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“…The calculations are given in Table 5 in detail. The details of the process how the chemical exergies are calculated are presented elsewhere [64,65].…”

Section: Estimation Of Thermodynamic Propertiesmentioning

confidence: 99%

Assessment of the energy and exergy efficiencies of farm to fork grain cultivation and bread making processes in Turkey and Germany

Değerli

Nazir

Sorgüven

et al. 2015

Energy

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Energy and exergy efficiencies of the wheat and rye bread and hamburger bun making processes are assessed based on data from Turkey and Germany. Amount of the land required to produce the same amount of wheat in Turkey is 3.34 times of that required in Germany; this ratio is 2.30 for the rye grain. These results show that the efficiency of the conversion of the solar energy into the grain mass is low in Turkey. Cumulative degree of perfection (CDP) for the wheat and the rye grain production is 3.73 and 4.96 in Turkey, and 11.26 and 10.46 in Germany. Specific energy utilization for rye bread production is almost the same in Turkey and Germany; but it is 12 % higher in Turkey for wheat bread and hamburger bun making. Hamburger bun production requires the maximum energy utilization due to the higher weight loss in baking. The rye bread production process requires the minimum energy utilization due to the lower energy input in the agriculture and higher efficiency in the flour production. The maximum exergy destructions occur during the milling and the baking steps.Keywords: Bread making, energy efficiency, exergy efficiency, carbon dioxide emission Correspondence: mozilgen@yeditepe.edu.tr 2 Highlights• Agriculture determines the energy and exergy efficiency of bread making• Conversion efficiency of the solar energy into grain mass is lower in Turkey• The smallest energy and exergy is needed for the rye bread making• The largest energy and exergy is needed for the hamburger bun making• Energy efficiency per mass of bread production is 12 % higher in Germany 3

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“…The calculations are given in Table 5 in detail. The details of the process how the chemical exergies are calculated are presented elsewhere [64,65].…”

Section: Estimation Of Thermodynamic Propertiesmentioning

confidence: 99%

Assessment of the energy and exergy efficiencies of farm to fork grain cultivation and bread making processes in Turkey and Germany

Değerli

Nazir

Sorgüven

et al. 2015

Energy

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“…For example, Değerli et al (2015b) estimated the chemical exergy of serogroup C antigen produced by the bacterium Neisseria meningitidis using values of Gibbs energy of formation estimated by the method proposed by Marrero and Gani (2001). In another study, Değerli et al (2015a) estimated the Gibbs energy of formation of wheat and rye seed based on the contribution of first order groups, according to the method proposed by Joback and Reid (1987).…”

Section: Thermodynamic Modelsmentioning

confidence: 99%

“…In the field of biotechnology, thermodynamics has been shown to be an attractive tool, being applied, for example, in the study of enzymolysis, thermophysical properties of biochemical molecules, phase equilibria of biofluids, metabolism of living cells and energetic efficiency of bioengineering processes (Stockar 2013;Ptasinski 2016;Wu et al 2018;Silva et al 2019). In this context, the exergetic analysis technique is considered an effective approach to evaluate the performance of different biotechnological processes, which include ethanol production (Ofori-boateng and Lee 2014; Aghbashlo et al 2016c;Dadak et al 2016), biodiesel (Velásquez et al 2013Aghbashlo et al 2019b), biohydrogen (Hosseini et al 2015;Aghbashlo et al 2016a, b;Hosseinpour et al 2017), microalgae lipids (Küçük et al 2015) and antigens (Değerli et al 2015a). One of the main challenges is to calculate the chemical exergy of the compounds involved in these processes.…”

Section: Introductionmentioning

confidence: 99%

“…As there are still a limited number of thermodynamic data for organic compounds available in the literature, it is of great interest to use reliable methods for property estimation if experimental measurements cannot be performed. The use of group contribution methods (GC) has been reported in the literature for the estimation of chemical exergy of organic compounds such as proteins (Sorgüven and Özilgen 2012), antigens (Değerli et al 2015a), wheat seeds and agro-chemicals (Değerli et al 2015b). Studies by Joback and Reid (1987), Constantinou and Gani (1994), Marrero and Gani (2001) and Gharagheizi et al (2014Gharagheizi et al ( , 2018 contributed substantially to the development of this estimation method.…”

Section: Introductionmentioning

confidence: 99%

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Determination of chemical exergy for compounds of biotechnological interest using different estimation methodologies

Silva

Anacleto

Junior

et al. 2020

Braz. J. Chem. Eng.

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Different methods of chemical exergy estimation for several organic compounds have been proposed in literature, mainly for those related to the petrochemical and energy industry. However, there is a lack of specific models for the estimation of different biomolecules chemical exergy. The present work aimed to evaluate the performance of two specific chemical exergy estimation methodologies for 42 compounds of biotechnological interest. The methodologies employed were the group contribution method (GC) and semi-empirical correlation. In addition, a methodology for the specific chemical exergy calculation of protein based on empirical information on the amino acid content was proposed. According to the results obtained by the methodologies studied, it was observed that the predicted chemical exergy values of the biomolecules considered were similar to the literature data, presenting an adjustment of R 2 > 0.98. The property estimation GC-based method provided better statistical performance, with average absolute error and average relative error of 0.56 MJ kg −1 and 4.21%, respectively.

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“…Thermodynamic analysis may be used to extract more information from a set of experimental data as exemplified by Değerli et al . , where kinetic and thermodynamic models were developed to relate substrate consumption, serogroup C antigen production, and growth rate of Neisseria meningitidis , a meningitis‐causing bacterium during the uncontrolled, pH‐controlled, and dissolved‐oxygen‐controlled cultivation. The analyses made it possible to understand that the microorganisms used their energy metabolism most efficiently in the case of the guaranteed presence of the dissolved oxygen, for example, the ultimate acceptor of the electrons in the electron transport chain.…”

Section: The Scope Of the Biothermodynamics Researchmentioning

confidence: 99%

Review on biothermoydnamics applications: timeline, challenges, and opportunities

Özilgen

2017

Int. J. Energy Res.

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Summary Research on biothermodynamics dates back to the publication of the manuscript What Is Life? by Schrödinger in the 1940s, which encouraged the use of the fundamental principles of thermodynamics for the analysis of biological processes. In the 1960s and 1970s, development of the early genetic engineering techniques, difficulties in the sugar imports to the USA due to the trade embargo imposed on Cuba, and the oil price hike after the Arab–Israeli wars created a positive environment in the USA to foster the merger of biology with engineering. The synergy established between biology and engineering in the 1960s created an irreversible stimulus for scientific and technological development in the USA and elsewhere. Advances in biothermodynamics have roots deep in the positive environment of the 1960s and 1970s. Exergy analyses were initially used to evaluate efficiency of the fuel‐utilizing and energy‐utilizing processes. In the early 2010s, exergy analyses found application in development of the industrial production processes of the biological origin and later directly in the cellular processes in the body. Assessing the comfort of the body in terms of entropy generation and exergy destruction, exergy efficiency of the metabolic pathways in the brain, exergy efficiency of the muscle work, and life span entropy generation and understanding and finding ways to postpone the symptoms of aging were among these studies. Application of the biothermodynamics in the medical fields will provide opportunities in the health sciences and medical technology and improve the quality of life of humans and animals. Comparing the exergetic efficiency of the competing theories on the brain energy metabolism, offering some help to prevent heart attacks in the amputees, and finding the causes of the difference in the crop yields of the plants are among the outcomes of the current biothermodynamics research. Copyright © 2017 John Wiley & Sons, Ltd.

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Thermodynamic analysis of serogroup C antigen production by Neisseria meningitidis

Cited by 7 publications

References 50 publications

Assessment of the energy and exergy efficiencies of farm to fork grain cultivation and bread making processes in Turkey and Germany

Assessment of the energy and exergy efficiencies of farm to fork grain cultivation and bread making processes in Turkey and Germany

Determination of chemical exergy for compounds of biotechnological interest using different estimation methodologies

Review on biothermoydnamics applications: timeline, challenges, and opportunities

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