Colloidal Characteristics of Water Systems of Rhamnolipid Biocomplex of Strain Pseudomonas sp. PS-17 with Tween-80 and their Prospects for Biotechnology
Background. Efficiency of mixed systems of biogenic and synthetic surfactants, based on their colloidal chemical properties, in environmentally safe technologies. Objective. The aim of the paper is the study of the aqueous systems’ colloidal characteristics of the rhamnolipid biocomplex with Twееn-8...
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| Format: | Article |
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Igor Sikorsky Kyiv Polytechnic Institute
2017-12-01
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| Series: | Наукові вісті Національного технічного університету України "Київський політехнічний інститут" |
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| Online Access: | http://bulletin.kpi.ua/article/view/111001 |
| _version_ | 1818967506234114048 |
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| author | Elena V. Karpenko Vladislav A. Voloshynets Ilona V. Karpenko Tetyana Ya. Pokynbroda Ihor V. Semenyuk Halyna G. Midyana |
| author_facet | Elena V. Karpenko Vladislav A. Voloshynets Ilona V. Karpenko Tetyana Ya. Pokynbroda Ihor V. Semenyuk Halyna G. Midyana |
| author_sort | Elena V. Karpenko |
| collection | DOAJ |
| description | Background. Efficiency of mixed systems of biogenic and synthetic surfactants, based on their colloidal chemical properties, in environmentally safe technologies.
Objective. The aim of the paper is the study of the aqueous systems’ colloidal characteristics of the rhamnolipid biocomplex with Twееn-80 nonionic surfactant, as well as the study of the obtained mixtures’ action for the emulsion stabilization and for plant growth stimulation.
Methods. The surface tension of RBC, Tween-80, and their mixture solutions was measured by the Du-Nui method (with a platinum ring). The dependence of the surface tension on the surfactant concentration was determined for mixtures with RBC content, %: 0.0; 11.1; 25.0; 42.9; 66.7; 100. The emulsifying activity of the surfactant mixtures was determined on the emulsification index (E24). The surfactant influence on plants was assessed by their morphometric parameters after presowing seed treatment.
Results. It was found that the obtained mixture behavior, regardless of the surfactant concentration, deviates from the ideal mixture – the deviation is negative, which indicates the predominance of RBC in the surface layer. The shapes of the surface tension curves for different surfactant ratios indicate synergistic effects before and after micelle formation. The optimum ratio in the RBC-Tween-80 system for sunflower growth and sunflower oil emulsification is 2:1.
Conclusions. The peculiarities of colloid-chemical characteristics of RBC and Tween-80 systems are determined, the prospects of their use for increasing efficiency of emulsification and sunflower growth stimulation are determined. |
| first_indexed | 2024-12-20T13:49:53Z |
| format | Article |
| id | doaj.art-1c261b508f6048c48ca25758e048f21f |
| institution | Directory Open Access Journal |
| issn | 1810-0546 2519-8890 |
| language | English |
| last_indexed | 2024-12-20T13:49:53Z |
| publishDate | 2017-12-01 |
| publisher | Igor Sikorsky Kyiv Polytechnic Institute |
| record_format | Article |
| series | Наукові вісті Національного технічного університету України "Київський політехнічний інститут" |
| spelling | doaj.art-1c261b508f6048c48ca25758e048f21f2022-12-21T19:38:33ZengIgor Sikorsky Kyiv Polytechnic InstituteНаукові вісті Національного технічного університету України "Київський політехнічний інститут"1810-05462519-88902017-12-010671310.20535/1810-0546.2017.6.111001111001Colloidal Characteristics of Water Systems of Rhamnolipid Biocomplex of Strain Pseudomonas sp. PS-17 with Tween-80 and their Prospects for BiotechnologyElena V. Karpenko0Vladislav A. Voloshynets1Ilona V. Karpenko2Tetyana Ya. Pokynbroda3Ihor V. Semenyuk4Halyna G. Midyana5Department of Physics and Chemistry of Fossil Fuels InPOCC at National Academy of Sciences of UkraineLviv Polytechnic National UniversityDepartment of Physics and Chemistry of Fossil Fuels InPOCC at National Academy of Sciences of UkraineDepartment of Physics and Chemistry of Fossil Fuels InPOCC at National Academy of Sciences of UkraineDepartment of Physics and Chemistry of Fossil Fuels InPOCC at National Academy of Sciences of UkraineDepartment of Physics and Chemistry of Fossil Fuels InPOCC at National Academy of Sciences of UkraineBackground. Efficiency of mixed systems of biogenic and synthetic surfactants, based on their colloidal chemical properties, in environmentally safe technologies. Objective. The aim of the paper is the study of the aqueous systems’ colloidal characteristics of the rhamnolipid biocomplex with Twееn-80 nonionic surfactant, as well as the study of the obtained mixtures’ action for the emulsion stabilization and for plant growth stimulation. Methods. The surface tension of RBC, Tween-80, and their mixture solutions was measured by the Du-Nui method (with a platinum ring). The dependence of the surface tension on the surfactant concentration was determined for mixtures with RBC content, %: 0.0; 11.1; 25.0; 42.9; 66.7; 100. The emulsifying activity of the surfactant mixtures was determined on the emulsification index (E24). The surfactant influence on plants was assessed by their morphometric parameters after presowing seed treatment. Results. It was found that the obtained mixture behavior, regardless of the surfactant concentration, deviates from the ideal mixture – the deviation is negative, which indicates the predominance of RBC in the surface layer. The shapes of the surface tension curves for different surfactant ratios indicate synergistic effects before and after micelle formation. The optimum ratio in the RBC-Tween-80 system for sunflower growth and sunflower oil emulsification is 2:1. Conclusions. The peculiarities of colloid-chemical characteristics of RBC and Tween-80 systems are determined, the prospects of their use for increasing efficiency of emulsification and sunflower growth stimulation are determined.http://bulletin.kpi.ua/article/view/111001Surface activityRhamnolipid biocomplexTwееn-80Surfactant systemsЕmulsificationPlant growth stimulation |
| spellingShingle | Elena V. Karpenko Vladislav A. Voloshynets Ilona V. Karpenko Tetyana Ya. Pokynbroda Ihor V. Semenyuk Halyna G. Midyana Colloidal Characteristics of Water Systems of Rhamnolipid Biocomplex of Strain Pseudomonas sp. PS-17 with Tween-80 and their Prospects for Biotechnology Наукові вісті Національного технічного університету України "Київський політехнічний інститут" Surface activity Rhamnolipid biocomplex Twееn-80 Surfactant systems Еmulsification Plant growth stimulation |
| title | Colloidal Characteristics of Water Systems of Rhamnolipid Biocomplex of Strain Pseudomonas sp. PS-17 with Tween-80 and their Prospects for Biotechnology |
| title_full | Colloidal Characteristics of Water Systems of Rhamnolipid Biocomplex of Strain Pseudomonas sp. PS-17 with Tween-80 and their Prospects for Biotechnology |
| title_fullStr | Colloidal Characteristics of Water Systems of Rhamnolipid Biocomplex of Strain Pseudomonas sp. PS-17 with Tween-80 and their Prospects for Biotechnology |
| title_full_unstemmed | Colloidal Characteristics of Water Systems of Rhamnolipid Biocomplex of Strain Pseudomonas sp. PS-17 with Tween-80 and their Prospects for Biotechnology |
| title_short | Colloidal Characteristics of Water Systems of Rhamnolipid Biocomplex of Strain Pseudomonas sp. PS-17 with Tween-80 and their Prospects for Biotechnology |
| title_sort | colloidal characteristics of water systems of rhamnolipid biocomplex of strain pseudomonas sp ps 17 with tween 80 and their prospects for biotechnology |
| topic | Surface activity Rhamnolipid biocomplex Twееn-80 Surfactant systems Еmulsification Plant growth stimulation |
| url | http://bulletin.kpi.ua/article/view/111001 |
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