Výsledky vyhledávání - "Petra Blafkova"

pH-Controlled Self-Assembling of meso-Tetrakis(4-sulfonatophenyl)porphyrin−Chitosan Complexes

Autor: Alla Synytsya, Petr Slepicka, Karel Volka, Andriy Synytsya, Petra Blafkova, Jiri Spevacek, Vladimír Král, Jana Ederová

Publikováno v: Biomacromolecules. 10:1067-1076

Solid meso-tetrakis(4-sulfonatophenyl)porphyrin (TPPS(4))-chitosan supramolecular complexes were prepared by addition of porphyrin to an aqueous solution of chitosan at pH values. The precipitates obtained were assigned as 1 (pH 6.8) and 2 (pH 2.5) a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b8d19d2d1cddb89a0061ec46ab289d76
https://doi.org/10.1021/bm8011715

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Conjugation of kojic acid with chitosan

Autor: Jiří Spěváček, Alla Synytsya, Jana Čopíková, Andriy Synytsya, Michal Uher, Petra Blafkova

Publikováno v: Carbohydrate Polymers. 72:21-31

Direct and non-direct conjugation of kojic acid with chitosan was carried out according to the following approaches: (a) covalent binding of chlorokojic acid to chitosan via free amino groups, and (b) complexation of kojic acid with iron(III) bound t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f5da7976fc948b068173394e7ed22164
https://doi.org/10.1016/j.carbpol.2007.07.011

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Chitin-glucan complex from Agaricus blazei, a potential raw material for production of food additives

Autor: Jana Čopíková, Petra Blafkova, Andriy Synytsya

Publikováno v: Czech Journal of Food Sciences. 22:S231-S234

Agaricus blazei, a mushroom native to Brazil, is a perspective source for food industry. This mushroom has been widely used in folk medicine due to its possible medicinal value. The most important components of fruiting bodies of A. blazei are specif

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::240662c3525584016ae1cb29c1f14a5a
https://doi.org/10.17221/10668-cjfs

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Preparation of N-alkylamides of highly methylated (HM) citrus pectin

Autor: Petra Blafkova, Lucie Sihelnı́ková, Andriy Synytsya, Jaroslav Havlicek, Jana Čopíková, Petra Mlčochová, Marcela Tkadlecova, Milan Marounek

Publikováno v: Czech Journal of Food Sciences. 21:162-166

N-Alkylamides of highly methylated (HM) citrus pectin (DM = 73%) were prepared using heterogeneous amino-dealkoxylation (aminolysis) with five selected n-alkylamines. The reaction was carried out in N,N-dimethylformamide at 8°C (n-butylamine), 25°C

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1be4fe2b271b6438f52c5319e8f84c72
https://doi.org/10.17221/3494-cjfs

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Interaction of meso-tetrakis(4-sulphonatophenyl)porphine with chitosan in aqueous solutions

Autor: Alla Synytsya, Andriy Synytsya, Petra Blafkova, Vladimír Král, Karel Volka

Publikováno v: Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy. 66(2)

Interaction of meso-tetrakis(4-sulphonatophenyl)porphine (TPPS4) with chitosan (Mr approximately 400 kDa, N-acetyls approximately 20 mol.%) was studied in aqueous solutions. UV-vis absorption and circular dichroism (CD) spectroscopic titration of 10

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ab081799a1a5cff9184693c502cc135b
https://pubmed.ncbi.nlm.nih.gov/16829172

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