Wpływ heterogeniczności powierzchni biokoloidów na ich rozdzielanie elektroforetyczne

• Autorzy: Buszewski B. , Pomastowski P.

Warianty tytułu

EN

Influence of heterogeneity biocolloids surface on their electrophoretic separation

• Języki publikacji: PL

Abstrakty

EN

Electrical properties of biocolloids, due to the unique structure and properties of the walls and cell membranes are altered by ions present in the environment. This change in the surface properties of bacterial cells has a major impact on the effects of cell-cell or cell-surface during the formation of aggregates or biofilm. Each microorganism has a complex and characteristic cell wall composition, which surface charge originates from the ionization of carboxyl, phosphate or amino groups and the adsorption of ions from solution. Consequently, the charged cell wall groups determine the spontaneous formation of the electrical double layer (EDL). The properties of the EDL affect the behavior of biocolloid including cell-to-cell and cell-to-capillary surface interactions. In addition, the inner wall surface of capillary groups (modified and/or unmodified) interact with the solvent and the analyte. Biocolloids effect of aggregation and adhesion to the surface of the capillary is unfavorable phenomenon occurring during the electrophoretic separation. These phenomena are highly correlated with the acid-base properties of the bacterial cells. Interactions between molecules are unstable, hence the analytes adsorbed on the surface concerned can be removed using a variety of solvents or physico-chemical and mechanical factors. However, when the bacterial cells are in close proximity to the charged surface of the capillary may be subject to specific and non-specific short-range interactions, which are characterized by high stability. It has been shown the characteristics of the microbial surface in order to determine their role in adhesion and aggregation phenomena during the electrophoretic separation. The use of experimental techniques, including instrumental, electrochemical and electrophoretic allowed the description of the relationship between the acid-base properties of pathogens and their behavior. The review summarizes the research on biocolloids which are helpful in understanding the interactions that occur during electrophoretic analysis.

Słowa kluczowe

PL

biokoloidy; warstwa dielektryczna; potencjał zeta; strefowa elektroforeza kapilarna

EN

biocolloids; electric double layer; zeta potential; capillary zone electrophoresis

• Wydawca: Polskie Towarzystwo Chemiczne
• Czasopismo: Wiadomości Chemiczne
• Rocznik: 2015
• Tom: [Z] 69, 9-10
• Strony: 823--846
• Opis fizyczny: Bibliogr. 32 poz., rys., tab.

Twórcy

autor

Buszewski B.

• Katedra Chemii Środowiska i Bioanalityki Wydział Chemii, Uniwersytet Mikołaja Kopernika ul. Gagarina 7, 87-100 Toruń

autor

Pomastowski P.

• Katedra Chemii Środowiska i Bioanalityki Wydział Chemii, Uniwersytet Mikołaja Kopernika ul. Gagarina 7, 87-100 Toruń

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Uwagi

Błędna numeracja cytowań: brak numeru 7,8 oraz podwójny numer 31. Właściwa ilość poz. to 32.