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Osik N, Lukzen NN, Yanshole VV, Tsentalovich YP. Loss of Volatile Metabolites during Concentration of Metabolomic Extracts. ACS OMEGA 2024; 9:24015-24024. [PMID: 38854568 PMCID: PMC11154959 DOI: 10.1021/acsomega.4c02439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 05/02/2024] [Accepted: 05/16/2024] [Indexed: 06/11/2024]
Abstract
Volatile metabolites can be lost during the preanalytical stage of metabolomic analysis. This work is aimed at the experimental and theoretical study of mechanisms of volatile substance evaporation and retention in the residues during the drying of extract solutions. We demonstrate that solvent evaporation leads to the unavoidable loss of nondissociating volatile metabolites with low boiling points and high vapor pressures (such as acetone and ethanol). The retention of dissociating volatile compounds (primarily organic acids RH) during the evaporation depends on the presence of buffer salts in solution, which are responsible for maintaining the neutral pH. An acid remains in the solution as long as it is present predominantly in the dissociated R- state. At the very last stage of solvent evaporation, buffer salts precipitate, forming a solid matrix for metabolite trapping in the residue. At the same time, buffer precipitation leads to a decrease of the solution pH, increase of the portion of RH in associated state, and acceleration of RH volatilization. The RH recovery is thus determined by the competition between the solute volatilization in the associated RH form and metabolite trapping in the solid matrix. The retention of volatile acids in the residue after extract drying can be improved either by adding buffer salts to maintain high pH or by incomplete sample drying.
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Affiliation(s)
- Nataliya
A. Osik
- International
Tomography Center Siberian Branch of Russian Academy of Sciences, Institutskaya str. 3a, Novosibirsk 630090, Russia
| | - Nikita N. Lukzen
- International
Tomography Center Siberian Branch of Russian Academy of Sciences, Institutskaya str. 3a, Novosibirsk 630090, Russia
- Novosibirsk
State University, Pirogova
str. 1, Novosibirsk 630090, Russia
| | - Vadim V. Yanshole
- International
Tomography Center Siberian Branch of Russian Academy of Sciences, Institutskaya str. 3a, Novosibirsk 630090, Russia
- Novosibirsk
State University, Pirogova
str. 1, Novosibirsk 630090, Russia
| | - Yuri P. Tsentalovich
- International
Tomography Center Siberian Branch of Russian Academy of Sciences, Institutskaya str. 3a, Novosibirsk 630090, Russia
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Shumyantseva VV, Agafonova LE, Bulko TV, Kuzikov AV, Masamrekh RA, Yuan J, Pergushov DV, Sigolaeva LV. Electroanalysis of Biomolecules: Rational Selection of Sensor Construction. BIOCHEMISTRY (MOSCOW) 2021; 86:S140-S151. [PMID: 33827405 DOI: 10.1134/s0006297921140108] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Methods of electrochemical analysis of biological objects based on the reaction of electro-oxidation/electro-reduction of molecules are presented. Polymer nanocomposite materials that modify electrodes to increase sensitivity of electrochemical events on the surface of electrodes are described. Examples of applications electrochemical biosensors constructed with nanocomposite material for detection of biological molecules are presented, advantages and drawbacks of different applications are discussed.
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Affiliation(s)
- Victoria V Shumyantseva
- Laboratory of Bioelectrochemistry, Orekhovich Research Institute of Biomedical Chemistry, Moscow, 119992, Russia. .,Department of Biochemistry, Pirogov Russian National Research Medical University, Moscow, 117997, Russia
| | - Lubov E Agafonova
- Laboratory of Bioelectrochemistry, Orekhovich Research Institute of Biomedical Chemistry, Moscow, 119992, Russia
| | - Tatiana V Bulko
- Laboratory of Bioelectrochemistry, Orekhovich Research Institute of Biomedical Chemistry, Moscow, 119992, Russia
| | - Alexey V Kuzikov
- Laboratory of Bioelectrochemistry, Orekhovich Research Institute of Biomedical Chemistry, Moscow, 119992, Russia.,Department of Biochemistry, Pirogov Russian National Research Medical University, Moscow, 117997, Russia
| | - Rami A Masamrekh
- Laboratory of Bioelectrochemistry, Orekhovich Research Institute of Biomedical Chemistry, Moscow, 119992, Russia.,Department of Biochemistry, Pirogov Russian National Research Medical University, Moscow, 117997, Russia
| | - Jiayin Yuan
- Department of Materials and Environmental Chemistry, Stockholm University, Stockholm, 10691, Sweden
| | - Dmitry V Pergushov
- Faculty of Chemistry, Lomonosov Moscow State University, Moscow, 117991, Russia
| | - Larisa V Sigolaeva
- Laboratory of Bioelectrochemistry, Orekhovich Research Institute of Biomedical Chemistry, Moscow, 119992, Russia.,Faculty of Chemistry, Lomonosov Moscow State University, Moscow, 117991, Russia
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