[On physical properties of extracts of Acanthophyllum gypsoohiloides and Saponaria officinalis used for manufacturing functional purpose-products]
2007
Yudina, T.P., Pacific State Univ. of Economics, Vladivostok (Russian Federation) | Gorenkov, Eh.S., All-Russia Research and Development Instit. of Canning and Vegetable Drying Industry, Moscow Region (Russian Federation)
Gypsophilous spinepink (Acanthophyllum gypsoohiloides) and soapwort (Saponaria officinalis) were selected as raw materials to produce saponin-containing emulsifiers used in the production of emulsifying products of functional purpose. The technology of manufacturing extract emulsifiers (RE) from plant roots is based on the method of preparing a soap root decoction used as a foam-former in the production of halvah. The chemical composition of water RE of gypsophilous spinepink and soapwort placing a special emphasis on saponins responsiblw for emulsifying properties of RE, phenol compounds (perspective antioxidants) and polysaccharides influencing the RE viscosity. The maim components of RE are saponins: the total content in water spinepink RE was 83%, and in soapwort RE – 72%; RE differed in the ratio of saponins of different polarity – in spinepink RE most saponins were mainly represented by highly-polar saponins (77%), while in soapwort RE, besides highly-polar saponins (55%), lowly-polar saponins were present (17%). The physical properties of spinepink RE and soapwort RE influencing greatly the dispersion process, as well as the properties and stability of the obtained emulsions were studied: the isotherms of boundary tension and viscosity were determined, the RE foam-forming and emulsifying abilities were studied. Both of RE had high surface activity – up to 55-60 H/m2, the abrupt declining the boundary tension being observed in the area of starting concentrations (0.8-1.2%); changing the viscosity was observed with the weight fraction of dry matters in RE1%, however the viscosity changing rate in soapwort RE was higher compared to spinepink RE because of high polysaccharides (15%). Spinepink RE and soapwort RE had the same emulsifying ability and were able of forming stable emulsions with the same weight fraction of soluble dry matters.
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