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Zastosowanie miedziowych kompleksów chlorofilu jako barwników naturalnych

Vogt Elżbieta, Vogt Otmar, Poręba Ewelina, Malaca Anna

Przemysł Chemiczny

2019

T. 98, nr 5

723--733

Otrzymano metodami ekstrakcyjnymi chlorofilowe barwniki z surowców naturalnych. Dodatek barwników chlorofilowych zarówno do spoiwa temperowego, jak i do farby olejnej umożliwia uzyskanie farb w kolorze zielonym. Rodzaj dodawanego barwnika wpływa na właściwości użytkowe otrzymanych farb i polepsza przebadane właściwości wymalowanych powłok.

Chlorophyll was isolated from natural raw materials (nettle, spinach and alfalfa) by extn. with 80% aq. Me₂CO in the presence of Mg₅(CO₃)₄(OH)₂·5H₂O at 50°C and under intensive stirring. Isolated chlorophyll was reacted with 30% aq. CuSO₄ to obtain chlorophyll-Cu complex and then with aq. soln. of NaOH to chlorophyll-Cu/Na complex. The complexes were tested for dyeing tempera binder and oil paints. The chlorophyll dyes improved the properties of painted coatings. The best properties were obtained for chlorophyllin-Cu/Na complex dye.

The effect of selected supercritical CO2 plant extract addition on user properties of shower gels

Vogt Otmar, Sikora Elżbieta, Ogonowski Jan

Polish Journal of Chemical Technology

2014

Vol. 16, nr 4

51--54

The formulations of washing cosmetics i.e. shower gels, containing extracts obtained during supercritical CO2 extraction process as active ingredient, were developed. The subject of the study was the analysis of the physicochemical and user properties of the obtained products. In the work supercritical CO2 extracts of black currant seeds, strawberry seeds, hop cones and mint leafs were used. The formulation contains a mixture of surfactants (disodium cocoamphodiacetate, disodium laureth sulfosuccinate, cocoamide DEA, cocoamidepropyl betaine, Sodium Laureth Sulfate). Various thickener agents were applied to the obtained desired rheological properties of the cosmetics. Among others, sorbitol acetal derivatives, methylhydroxypropylcellulose and C10-30 alkyl acrylate crosspolymer were used. For stable products, the effect of extracts addition (black currants seeds, strawberries seeds, mint and hops, obtained from supercritical CO2 extraction process) on the cosmetics properties, such as pH, viscosity, detergency and foam ability, were determined. The obtained results showed that the extracts could be used as components of shower gels.