. "P\u0159\u00EDroda sama o sob\u011B nab\u00EDz\u00ED velkou \u0161k\u00E1lu l\u00E1tek, kter\u00E9 se pou\u017E\u00EDvaj\u00ED jako barviva. Jejich identifikace je, vzhledem k v\u00FDznamu barviv ve v\u0161ech kultur\u00E1ch, zaj\u00EDmav\u00E9 t\u00E9ma. Pro \u00FA\u010Dely barven\u00ED se vyu\u017E\u00EDvaly barevn\u00E9 l\u00E1tky rostlinn\u00E9ho i \u017Eivo\u010Di\u0161n\u00E9ho p\u016Fvodu. Charakteristika t\u011Bchto l\u00E1tek v historick\u00FDch p\u0159edm\u011Btech je n\u00E1ro\u010Dn\u00FD \u00FAkol, nebo\u0165 barviva mohou poch\u00E1zet ze \u0161irok\u00E9 \u0161k\u00E1ly zdroj\u016F a pro anal\u00FDzu je k dispozici pouze mal\u00E9 mno\u017Estv\u00ED vzorku1. P\u0159edm\u011Btem tohoto liter\u00E1rn\u00EDho p\u0159ehledu je studium oxida\u010Dn\u00EDch mechanism\u016F flavonoid\u016F, kter\u00E9 se pou\u017E\u00EDvaly ji\u017E po\u010D\u00E1tkem 16. stolet\u00ED jako p\u0159\u00EDrodn\u00ED barviva pro barven\u00ED tapis\u00E9ri\u00ED a dal\u0161\u00EDch um\u011Bleck\u00FDch d\u011Bl. Identifikace barviv na star\u00FDch textili\u00EDch je obt\u00ED\u017En\u00E1 pr\u00E1ce, a to nejen d\u00EDky slo\u017Eitosti proces\u016F degradace2, kter\u00FDmi organick\u00E9 molekuly, citliv\u00E9 na sv\u011Btlo, pro\u0161ly. V\u00FDzkum se t\u00FDk\u00E1 objasn\u011Bn\u00ED degrada\u010Dn\u00EDch pochod\u016F vybran\u00FDch pigment\u016F. C\u00EDlem je nal\u00E9zt oxida\u010Dn\u00ED mechanismy, charakterizovat jejich produkty a ze zastoupen\u00ED rozkladn\u00FDch produkt\u016F odvodit p\u016Fvodn\u00ED typ pou\u017Eit\u00FDch barviv. Zji\u0161t\u011Bn\u00ED degrada\u010Dn\u00EDch produkt\u016F a zm\u011Bn ve struktu\u0159e matrice by mohlo pomoci p\u0159i v\u00FDb\u011Bru muzejn\u00EDch podm\u00EDnek. Jednalo by se nap\u0159\u00EDklad o nastaven\u00ED intenzity osv\u011Btlen\u00ED, dopadu UV z\u00E1\u0159en\u00ED, vlhkosti prost\u0159ed\u00ED. Ovlivn\u011Bn\u00EDm t\u011Bchto podm\u00EDnek lze sn\u00ED\u017Eit riziko rozkladu historick\u00E9ho materi\u00E1lu3. Procesy st\u00E1rnut\u00ED a zm\u011Bny um\u011Bleck\u00FDch d\u011Bl52 jsou, zejm\u00E9na v posledn\u00ED dob\u011B, urychlov\u00E1ny p\u016Fsoben\u00EDm polutant\u016F. P\u0159edev\u0161\u00EDm historick\u00E9 p\u0159edm\u011Bty obsahuj\u00EDc\u00ED vlnu a hedv\u00E1b\u00ED podl\u00E9haj\u00ED zm\u011Bn\u00E1m v proteinov\u00E9 frakci. Zvl\u00E1\u0161t\u011B s UV z\u00E1\u0159en\u00EDm interaguj\u00ED zejm\u00E9na histidinov\u00E9, tryptofanov\u00E9, tyrosinov\u00E9, methioninov\u00E9, cystinov\u00E9 a cysteinov\u00E9 zbytky obsa\u017Een\u00E9 ve vln\u011B a tryptofanov\u00E9, tyrosinov\u00E9 a fenylalaninov\u00E9 zbytky obsa\u017Een\u00E9 v hedv\u00E1b\u00ED4. Oz\u00E1\u0159en\u00EDm vlny vznik\u00E1 singletov\u00FD kysl\u00EDk a hydroperoxidy5. Tyto produkty fotooxidace jsou hlavn\u00EDm p\u016Fvodcem zm\u011Bny barvy, resp. \u017Eloutnut\u00ED historick\u00FDch p\u0159edm\u011Bt\u016F6." . . . "flavonoids; spectroelectrochemistry; oxidation"@en . . "P\u0159\u00EDroda sama o sob\u011B nab\u00EDz\u00ED velkou \u0161k\u00E1lu l\u00E1tek, kter\u00E9 se pou\u017E\u00EDvaj\u00ED jako barviva. Jejich identifikace je, vzhledem k v\u00FDznamu barviv ve v\u0161ech kultur\u00E1ch, zaj\u00EDmav\u00E9 t\u00E9ma. Pro \u00FA\u010Dely barven\u00ED se vyu\u017E\u00EDvaly barevn\u00E9 l\u00E1tky rostlinn\u00E9ho i \u017Eivo\u010Di\u0161n\u00E9ho p\u016Fvodu. Charakteristika t\u011Bchto l\u00E1tek v historick\u00FDch p\u0159edm\u011Btech je n\u00E1ro\u010Dn\u00FD \u00FAkol, nebo\u0165 barviva mohou poch\u00E1zet ze \u0161irok\u00E9 \u0161k\u00E1ly zdroj\u016F a pro anal\u00FDzu je k dispozici pouze mal\u00E9 mno\u017Estv\u00ED vzorku1. P\u0159edm\u011Btem tohoto liter\u00E1rn\u00EDho p\u0159ehledu je studium oxida\u010Dn\u00EDch mechanism\u016F flavonoid\u016F, kter\u00E9 se pou\u017E\u00EDvaly ji\u017E po\u010D\u00E1tkem 16. stolet\u00ED jako p\u0159\u00EDrodn\u00ED barviva pro barven\u00ED tapis\u00E9ri\u00ED a dal\u0161\u00EDch um\u011Bleck\u00FDch d\u011Bl. Identifikace barviv na star\u00FDch textili\u00EDch je obt\u00ED\u017En\u00E1 pr\u00E1ce, a to nejen d\u00EDky slo\u017Eitosti proces\u016F degradace2, kter\u00FDmi organick\u00E9 molekuly, citliv\u00E9 na sv\u011Btlo, pro\u0161ly. V\u00FDzkum se t\u00FDk\u00E1 objasn\u011Bn\u00ED degrada\u010Dn\u00EDch pochod\u016F vybran\u00FDch pigment\u016F. C\u00EDlem je nal\u00E9zt oxida\u010Dn\u00ED mechanismy, charakterizovat jejich produkty a ze zastoupen\u00ED rozkladn\u00FDch produkt\u016F odvodit p\u016Fvodn\u00ED typ pou\u017Eit\u00FDch barviv. Zji\u0161t\u011Bn\u00ED degrada\u010Dn\u00EDch produkt\u016F a zm\u011Bn ve struktu\u0159e matrice by mohlo pomoci p\u0159i v\u00FDb\u011Bru muzejn\u00EDch podm\u00EDnek. Jednalo by se nap\u0159\u00EDklad o nastaven\u00ED intenzity osv\u011Btlen\u00ED, dopadu UV z\u00E1\u0159en\u00ED, vlhkosti prost\u0159ed\u00ED. Ovlivn\u011Bn\u00EDm t\u011Bchto podm\u00EDnek lze sn\u00ED\u017Eit riziko rozkladu historick\u00E9ho materi\u00E1lu3. Procesy st\u00E1rnut\u00ED a zm\u011Bny um\u011Bleck\u00FDch d\u011Bl52 jsou, zejm\u00E9na v posledn\u00ED dob\u011B, urychlov\u00E1ny p\u016Fsoben\u00EDm polutant\u016F. P\u0159edev\u0161\u00EDm historick\u00E9 p\u0159edm\u011Bty obsahuj\u00EDc\u00ED vlnu a hedv\u00E1b\u00ED podl\u00E9haj\u00ED zm\u011Bn\u00E1m v proteinov\u00E9 frakci. Zvl\u00E1\u0161t\u011B s UV z\u00E1\u0159en\u00EDm interaguj\u00ED zejm\u00E9na histidinov\u00E9, tryptofanov\u00E9, tyrosinov\u00E9, methioninov\u00E9, cystinov\u00E9 a cysteinov\u00E9 zbytky obsa\u017Een\u00E9 ve vln\u011B a tryptofanov\u00E9, tyrosinov\u00E9 a fenylalaninov\u00E9 zbytky obsa\u017Een\u00E9 v hedv\u00E1b\u00ED4. Oz\u00E1\u0159en\u00EDm vlny vznik\u00E1 singletov\u00FD kysl\u00EDk a hydroperoxidy5. Tyto produkty fotooxidace jsou hlavn\u00EDm p\u016Fvodcem zm\u011Bny barvy, resp. \u017Eloutnut\u00ED historick\u00FDch p\u0159edm\u011Bt\u016F6."@cs . . "108" . . . "0009-2770" . "6"^^ . . . . "Rame\u0161ov\u00E1, \u0160\u00E1rka" . "Chemick\u00E9 listy" . "Electrochemical Oxidation of Natural Dyes Used in Works of Art"@en . "Elektrochemick\u00E1 oxidace p\u0159\u00EDrodn\u00EDch barviv pou\u017E\u00EDvan\u00FDch na um\u011Bleck\u00FDch pam\u00E1tk\u00E1ch" . "Elektrochemick\u00E1 oxidace p\u0159\u00EDrodn\u00EDch barviv pou\u017E\u00EDvan\u00FDch na um\u011Bleck\u00FDch pam\u00E1tk\u00E1ch" . "CZ - \u010Cesk\u00E1 republika" . "Elektrochemick\u00E1 oxidace p\u0159\u00EDrodn\u00EDch barviv pou\u017E\u00EDvan\u00FDch na um\u011Bleck\u00FDch pam\u00E1tk\u00E1ch"@cs . "Electrochemical Oxidation of Natural Dyes Used in Works of Art"@en . . . "14243" . "Sokolov\u00E1, Romana" . "Elektrochemick\u00E1 oxidace p\u0159\u00EDrodn\u00EDch barviv pou\u017E\u00EDvan\u00FDch na um\u011Bleck\u00FDch pam\u00E1tk\u00E1ch"@cs . "2"^^ . "I" . "RIV/61388955:_____/14:00434567" . . "2"^^ . "RIV/61388955:_____/14:00434567!RIV15-AV0-61388955" . . . "000338424600014" . "[B3069BCF2E8B]" . "5" . "The review presents the results of oxidation studies of naturally occurring flavonoids in particular quercetin. These compounds (original dyes of works of art) undergo aging and degradation. It is focused on the description of the oxidation pathways and identification of degradation products. This is of importance in saving cultural heritage."@en .