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Tytuł:
Influence of EDTA on stabilization of decarboxylated betalains
Autorzy:
Skopińska, A.
Starzak, K.
Wybraniec, S.
Powiązania:
https://bibliotekanauki.pl/articles/115483.pdf
Data publikacji:
2012
Wydawca:
Fundacja na Rzecz Młodych Naukowców
Tematy:
betacyanins
decarboxylation
Beta vulgaris L.
EDTA
Opis:
Betalains are known to be very sensitive to several factors, including higher temperature, therefore, the studies on their stability are essential for the food industry. In order to determine the stability of betanin derivatives during thermal treatment, a set of degradation experiments was performed, including the protective infl uence of EDTA as a chelating agent. The pigments were dissolved in aqueous solutions of acetonitrile, methanol and ethanol. The studies on thermal degradation of the pigments confi rmed their high lability in all investigated solvents. Under the infl uence of protective activity of EDTA, the rate of the degradation of the decarboxylated betalains was substantially decreased. The analysis of obtained absorption spectra of the degradation products indicated that under the infl uence of EDTA, the products retained the basic chromophoric skeleton.
Źródło:
Challenges of Modern Technology; 2012, 3, 4; 29-33
2082-2863
2353-4419
Pojawia się w:
Challenges of Modern Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research on betanidin oxidation by ABTS radicals
Autorzy:
Starzak, K.
Skopińska, A.
Wybraniec, S.
Powiązania:
https://bibliotekanauki.pl/articles/115792.pdf
Data publikacji:
2012
Wydawca:
Fundacja na Rzecz Młodych Naukowców
Tematy:
betanidin
betalains
antioxidation activity
ABTS
radicals
Opis:
Betanidin is a basic betacyanin with 5,6-dihydroxyl moiety which causes its high antioxidant activity. It belongs to betalains, a group of natural, water-soluble plant pigments, which elicit a red-violet coloration of fruits and fl owers. One of the most popular sources of betanidin is red beet root (Beta vulgaris L.). Recent studies have shown importance of betalains oxidation, because of their high natural, antiradical and antioxidant activity and potential benefi ts for human health [1]. An eff ect of oxidation of betanidin using ABTS radicals was investigated in aqueous solutions at pH 3–8 and compared to activity of horseradish peroxidase. Products of the biomimetic betanidin oxidation were monitored by high performance liquid chromatography (HPLC) coupled to optical detection and mass spectrometry (LC-DAD-ESI-MS/MS). The presence of two main oxidation products: 2-decarboxy-2,3-dehydro-betanidin and 2,17-didecarboxy-2,3-dehydro- -betanidin at pH 3 indicates their generation through two possible reaction ways with two diff erent quinonoid intermediates: dopachrome derivative and quinone methide. Both reaction paths lead to the decarboxylative dehydrogenation of betanidin.
Źródło:
Challenges of Modern Technology; 2012, 3, 4; 39-43
2082-2863
2353-4419
Pojawia się w:
Challenges of Modern Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chromatographic fractionation of betacyanins from flowers of Gomphrena globosa
Autorzy:
Szot, D.
Starzak, K.
Skopińska, A.
Wybraniec, S.
Powiązania:
https://bibliotekanauki.pl/articles/115427.pdf
Data publikacji:
2015
Wydawca:
Fundacja na Rzecz Młodych Naukowców
Tematy:
betacyanins
Gomphrena globosa
plant pigments
LC-MS
betacyjaniny
Gomfrena kulista
barwniki roślinne
Opis:
In this study, a chromatographic fractionation of betacyanin pigments from extract of purple Gomphrena globosa petals was performed by preparative high performance liquid chromatography (prep-HPLC). The particular betacyanins in each collected fractions were tentatively identified by chromatography with optical amd mass spetrometric detection (LC-DAD-ESI-MS). Betacyanins are natural pigments, which are confirmed to have an antioxidant activity. It was reported that betacyanins can prevent civilization diseases, because of an ability of free radicals scavenging. Betacyanins are present in tissue of plants from Amaranthaceae family, e.g. in petals of Gomphrena globosa. Preparative separation of these particular pigments is difficult, because they are structurally very similar to each other and tend to coelute. However, in this study, fractions, containing a dominant amount of the principal pigments of Gomphrena globosa inflorescences, were obtained successfully. In the first fractions, two isomeric pigments assigned to gomphrenin I and isogomphrenin I were detected. The fractions of significant amounts of gomphrenin III and isogomphrenin III were obtained separately with sufficient purity. The presence of other, minor gomphrenin-type betacyanins were also confirmed as: gomphrenin II, cis-isomer of gomphrenin II and sinapoyl-gomphrenin I as well as their 15S-diastereomers. Moreover, in other fractions, various unknown pigments were detected.
Źródło:
Challenges of Modern Technology; 2015, 6, 2; 19-23
2082-2863
2353-4419
Pojawia się w:
Challenges of Modern Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Cu (II) Cations on 2-Decarboxy-betanin Stability in Aqueous-Organic Solutions
Autorzy:
Skopińska, A.
Szot, D.
Starzak, K.
Wybraniec, S.
Powiązania:
https://bibliotekanauki.pl/articles/115534.pdf
Data publikacji:
2015
Wydawca:
Fundacja na Rzecz Młodych Naukowców
Tematy:
betacyanins
2-decarboxy-betanin
copper ions
betalain stability
Beta vulgaris L.
betacyjaniny
2-dekarboksy-betanina
jony miedzi
stabilność betalainy
Opis:
Several important factors, such us pH, exposure to light, oxygen or temperature affect significantly the betalain stability. In particular, the heavy metal ions exert negative effect on stability of betalain colorants and accelerate pigment decomposition. Trace amounts of metal ions may be present in the food products, as well as in food packaging, leading to undesirable colour changes or even discoloration of betalainic foodstuffs. Decarboxylated betalains, such as 2-decarboxy-betanin, generated, e.g. during betalain thermal treatment, may exhibit greater stability than parent pigments. Moreover, obtained derivatives retain attractive color, making them the promising material for study of pigment stability. An effect of Cu2+ cations as the most degradative metal ions on 2-decarboxy-betanin stability was investigated in ethanolic and methanolic solutions. The increase of the concentration of copper cations has a negative impact on stability of 2-decarboxy-betanin. The cations of Cu (II) in the presence of organic solvents induce the pigment degradation, while the increase of the concentration of organic solvents enhances the pigment decomposition. The main degradation products of the 2-decarboxy-betanin are compounds possessing absorption maxima at λmax ca. 430 nm. These studies allow obtaining the information needed for proper isolation and treatment of pigments, as well as proper storage of products containing betalains.
Źródło:
Challenges of Modern Technology; 2015, 6, 3; 24-29
2082-2863
2353-4419
Pojawia się w:
Challenges of Modern Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Profiles of products generated during betacyanins reduction by 2-methylpyridine borane
Autorzy:
Szot, D.
Starzak, K.
Skopińska, A.
Wybraniec, S.
Powiązania:
https://bibliotekanauki.pl/articles/115550.pdf
Data publikacji:
2015
Wydawca:
Fundacja na Rzecz Młodych Naukowców
Tematy:
betanina
neobetanina
betacyjaniny
redukcja
2-2-metylopirydyna boranu
LC-MS
betanin
neobetanin
betacyanins
reduction
2-methylpyridine borane
Opis:
Betanin and neobetanin (14,15-dehydrogenated betanin), natural betacyanin pigments were subjected to a gentle reduction by 2-methylpyridine borane. During each reduction reaction, the visible spectra were collected. The results were tentatively confirmed by LC-DAD-ESI-MS. In comparison to a previous study with sodium borohydride, various types of products were obtained. Depending on pH, one or two double bonds are reduced. Interestingly, a preliminary decarboxylation of the pigments is also noticed. Betacyanins are plant red-violet pigments applied as colorants in food and pharmaceutical industry which are proven to have an antioxidant activity. They are confirmed to be beneficial for human health as free radical scavengers. Therefore, betacyanins can prevent from many diseases which would be induced by an excessive accumulation of free radicals in the human body. There are more and more reports of their pro-health properties. However, the mechanism of betacyanins oxidation remains not completely elucidated. It is postulated that the rearrangement in the chromophoric system is a significant part of this mechanism. The products obtained as a result of reduction of betanin and neobetanin can be useful in oxidation investigations. Betacyanins with partially destroyed chromophoric system by reduction of the double bonds would by perfect models for further studies on their oxidation.
Źródło:
Challenges of Modern Technology; 2015, 6, 4; 19-22
2082-2863
2353-4419
Pojawia się w:
Challenges of Modern Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mass spectrometric detection of products of decarboxy-betanins UV-irradiation
Autorzy:
Starzak, K.
Skopińska, A.
Szot, D.
Wybraniec, S.
Powiązania:
https://bibliotekanauki.pl/articles/115619.pdf
Data publikacji:
2014
Wydawca:
Fundacja na Rzecz Młodych Naukowców
Tematy:
UV irradiation
natural plant pigments
betalains
promieniowanie UV
naturalne barwniki roślinne
barwniki betalain
Opis:
Betalains are a group of natural plant pigments, responsible for red-violet colour of numerous flowers, fruits and roots. They commonly occur in order of Caryophyllales (Caryophyllales). Recent studies revealed great health promoting properties of these pigments, but their natural origin make them very labile under various physicochemical conditions. In the case of betanin degradation, many new, decarboxy-betanins are formed. Latest study showed that UV-irradiation had significant impact on betanin stability, however, no deeper studies were performed in this field. In order to know an impact of the process conditions on degradation of betanin and its decarboxylated derivatives, series of experiments with UV-photo-irradiation was performed in aqueous solutions as well as in various organic solvents at wide range of pH. The highest pigment stability was observed in aqueous solutions for betanin and 17-decarboxybetanin at pH 4.5–7, and for 2,17-didecarboxybetanin at low pH. In all investigated organic solutions, all of the studied compounds have been degraded. The LC-DAD-ESI-MS analysis identified new reaction products. The results showed that UV-photo-irradiation leads mainly to a formation of many new and various 14,15-dehydrobetanins.
Źródło:
Challenges of Modern Technology; 2014, 5, 3; 22-26
2082-2863
2353-4419
Pojawia się w:
Challenges of Modern Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reactions of decarboxylated betanins under influence of halogen light
Autorzy:
Skopinska, A.
Szot, D.
Starzak, K.
Wybraniec, S.
Powiązania:
https://bibliotekanauki.pl/articles/115710.pdf
Data publikacji:
2014
Wydawca:
Fundacja na Rzecz Młodych Naukowców
Tematy:
betanin
decarboxylated betacyanins
photolability
mass spectrometry
betanina
dekarboksylacja betacyjaniny
spektrometria masowa
Opis:
Betalains as natural plant pigments are very sensitive to several factors, including light, therefore, studies on stability of their derivatives which retain their attractive color, are crucial for their potential application in pharmaceutical, food or cosmetic industries. An effect of irradiation by halogen light on reactivity of main decarboxylated derivatives of betacyanins (2-decarboxy-betanin, 17-decarboxy-betanin and 2,17-decarboxy-betanin) was investigated in aqueous and organic-aqueous solutions: 50% (v/v) acetonitrile, 50% (v/v) methanol and 50% (v/v) ethanol, at pH range 3-8. The double decarboxylation of betanin (at C-2 and C-17 position of carbon) significantly increases the stability of this pigment in the acidic media. As a result of pigments reactions induced by light, some betacyanin derivatives with different decarboxylation and dehydrogenation levels were identified by chromatography with tandem mass spectrometry (LC-MS/MS) and diode array detection (LC-DAD).
Źródło:
Challenges of Modern Technology; 2014, 5, 3; 37-43
2082-2863
2353-4419
Pojawia się w:
Challenges of Modern Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermal degradation of 17-decarboxy-betanin monitored by LC-MS
Autorzy:
Szot, D.
Starzak, K.
Skopińska, A.
Tuwalska, D.
Wybraniec, S.
Powiązania:
https://bibliotekanauki.pl/articles/115566.pdf
Data publikacji:
2014
Wydawca:
Fundacja na Rzecz Młodych Naukowców
Tematy:
17-decarboxy-betanin
betacyanins
thermal degradation
17-dekarboksy-betanina
betacyjaniny
degradacja termiczna
Opis:
A thermal stability study on 17-decarboxy-betanin depending on physicochemical process conditions was conducted. 17-decarboxy-betanin is one of betacyanin, natural origin pigments applied in food and pharmaceutical industry instead of artificial colorants. There is a need for searching of new non-toxic natural food components and this is a reason of increasing interest of betacyanins. As most derivatives of betanin obtained by decarboxylation, 17-decarboxy-betanin tends to degrade in the presence of some factors such as increased temperature or other conditions of the reaction environment [1]. This subject was investigated in this study because the stability of the pigments is still a significant issue limiting their wide application. The degradation of 17-decarboxy-betanin during heating in selected solutions: water as well as aqueous solutions of ethanol 50% (v/v), methanol 50% (v/v) and acetonitrile 50% (v/v) at pH in the range 3-8 was tested. As UV-Vis spectra indicate, 17-decarboxy-betanin tends to degrade mostly at pH 3, notwithstanding a type of solution. The products of degradation were identified by LC-DAD-ESI-MS. As a result of incubation at 85°C in different solutions, various mono-, bi- and tridecarboxylated as well as dehydrogenated derivatives were obtained. The dominant product of 17-de-carboxy-betanin degradation is 2,15,17-tridecarboxy-2,3-dehydro-betanin.
Źródło:
Challenges of Modern Technology; 2014, 5, 3; 32-36
2082-2863
2353-4419
Pojawia się w:
Challenges of Modern Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Enzymatic oxidation of neobetanin monitored by liquid chromatography with mass spectrometric detection
Autorzy:
Starzak, K.
Szot, D.
Skopińska, A.
Swiergosz, T.
Wybraniec, S.
Powiązania:
https://bibliotekanauki.pl/articles/115945.pdf
Data publikacji:
2016
Wydawca:
Fundacja na Rzecz Młodych Naukowców
Tematy:
neobetanin
betalains
betacyanins
horseradish peroxidase
oxidation
enzymatic
spectrophotometry
mass spectrometry
chromatography
neobetanina
betalainy
betacyjaniny
peroksydaza chrzanowa
enzymatyczne utlenianie
spektrofotometria
spektrometria masowa
chromatografia
Opis:
The aim of this study was monitoring of enzymatic oxidation of neobetanin, an interesting type of betalains which is a partially oxidized betacyanin. As it belongs to betalains, it is water soluble and non-toxic, but a presence of a few functional groups makes it very reactive. Oxidation reactions were performed using horseradish peroxidase followed by spectrophotometric and mass spectrometric detection (LC-DAD-ESI-MS/MS) of obtained products. Enzymatic oxidation of neobetanin leads to a formation of new decarboxy- and dehydro-derivatives. The main identified oxidation product is 2-decarboxy-2,3-dehydroneobetanin. Searching for all formed oxidation products is extremely important for elucidation of the betalains oxidation mechanism.
Źródło:
Challenges of Modern Technology; 2016, 7, 1; 29-31
2082-2863
2353-4419
Pojawia się w:
Challenges of Modern Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of ascorbic acid supplementation on betacyanin stability in purple pitaya (Hylocereus polyrhizus) juice
Autorzy:
Skopińska, A.
Szot, D.
Starzak, K.
Mizrahi, Y.
Wybraniec, S.
Powiązania:
https://bibliotekanauki.pl/articles/115881.pdf
Data publikacji:
2015
Wydawca:
Fundacja na Rzecz Młodych Naukowców
Tematy:
betalains
betacyanins
Hylocereus polyrhizus
thermal treatment of natural pigments
ascorbic acid
betalainy
betacyjaniny
obróbka termiczna naturalnych pigmentów
kwas askorbinowy
Opis:
Current studies on betalains are focused on searching of new plant sources of these pigments. In this light, purple pitaya (Hylocereus polyrhizus) is a valuable batalain-containing fruit. Betalains are known to be sensitive at elevated temperatures conditions. Nevertheless, addition of specific food stabilizers (EDTA, ascorbic acid, citric acid) as well as natural matrix compounds may exert stabilizing effect on maintenance of pigments. Therefore, in presented study, the stability of betalains in Hylocereus polyrhizus juices with protective addition of ascorbic acid at 85 ̊C was examined. Spectrophotometric analyses enable monitoring of reaction during heating of solutions. The hypsochromic shift of λmax to 460 nm is observed in more acidic media without ascorbic acid, suggesting the generation of new reaction products. These absorption bands in solutions with ascorbic acid are not detected, indicating on retaining of the basic structure of betalain chromophore. Generally, pigment retention is diminishing with prolonged heating and depends on pH-values of tested solutions. The addition of ascorbic acid significantly affects the betalain stability. After 60 min of heating, more than 60% of the initial pigment is retained at pH 3-4 in samples of purple pitaya with ascorbic acid. In summary, betacyanins in purple pitaya juice are shown to exhibit proper heat stability, when are stabilized with ascorbic acid. However, a protective effect of natural juice matrix and ascorbic acid is more significant at acidic pH.
Źródło:
Challenges of Modern Technology; 2015, 6, 4; 14-18
2082-2863
2353-4419
Pojawia się w:
Challenges of Modern Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of citric acid on stabilization of betanin solutions
Autorzy:
Skopińska, A.
Szot, D.
Tuwalska, D.
Starzak, K.
Osiadło, M.
Wybraniec, S.
Powiązania:
https://bibliotekanauki.pl/articles/115716.pdf
Data publikacji:
2014
Wydawca:
Fundacja na Rzecz Młodych Naukowców
Tematy:
betanin
betacyanins
citric acid
Beta vulgaris L.
betanina
betacyjaniny
kwas cytrynowy
Opis:
Elevated temperature is known to be the most crucial factor influencing betanin integrity during food processing and storage. Nevertheless, certain chelating agents or antioxidants, such as acetic acid, may act as stabilizers. Therefore, the effect of citric acid on the stability of betanin – basic betacyanin – was investigated during the heating experiments in water as well as 50% and 95% (v/v) aqueous-organic solutions of methanol, ethanol and acetonitrile. The presence of citric acid in tested solutions affects betanin stability, especially in the 95 % solutions, in which the stabilizing effect of this compound is significantly higher than in aqueous solutions. However, some decrease of retention in 50% methanol was also observed. The main products of betanin thermal degradation in aqueous and aqueous-organic solutions were compounds characterized by absorption bands around the wavelength at 420 nm.
Źródło:
Challenges of Modern Technology; 2014, 5, 2; 19-24
2082-2863
2353-4419
Pojawia się w:
Challenges of Modern Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spectrophotometric study on betanin photodegradation
Autorzy:
Skopińska, A.
Tuwalska, D.
Wybraniec, S.
Starzak, K.
Mitka, K.
Kowalski, P.
Szaleniec, M.
Powiązania:
https://bibliotekanauki.pl/articles/115905.pdf
Data publikacji:
2012
Wydawca:
Fundacja na Rzecz Młodych Naukowców
Tematy:
betanin
betacyanins
photodegradation
Beta vulgaris L.
Opis:
The most commonly occurring betacyanin plant pigment in nature is betanin (5-O-glucoside of betanidin). Its main source is red beet root (Beta vulgaris L.), used for production of food colorants on a commercial scale [1]. Due to photo-lability of betacyanins, an eff ect of UV-irradiation on betanin degradation in various solutions containing organic solvents was investigated. Organic solvents are used frequently in many stages of pigment preparation or isolation, therefore, knowledge of betalain stability and degradation characteristics in these solutions is essential. Pigment solutions at a concentration of 1 mg/ml were prepared in diff erent solvents: water as well as aqueous solutions of 50% (v/v) acetonitrile, 50% (v/v) methanol or 50% (v/v) ethanol, at the pH range 3–8. Acetate, phosphate and citrate buff ers were used for the experiments. As a result of the pigment photo-decomposition, numerous decarboxylated and dehydrogenated derivatives were formed. Spectrophotometric studies enabled determination of the pigment retention (percentage of the pigment residue relative to its initial concentration after decomposition time). The studies demonstrated betanin high lability in all solvents, not only at extreme pH values, but also in the middle pH range which, in general, provides higher stability of betalains.
Źródło:
Challenges of Modern Technology; 2012, 3, 4; 34-38
2082-2863
2353-4419
Pojawia się w:
Challenges of Modern Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ cyklicznego zamrażania i rozmrażania na właściwości materiałów kolagenowych
Freeze-thawing processing of collagen
Autorzy:
Skopińska-Wiśniewska, J.
Sionkowska, A.
Bajek, A.
Baczis-Macikowska, A.
Powiązania:
https://bibliotekanauki.pl/articles/283858.pdf
Data publikacji:
2013
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
materiały kolagenowe
zamrażanie
rozmrażanie
collagen
regenerative medicine
freeze
thawing
Źródło:
Engineering of Biomaterials; 2013, 16, no. 122-123 spec. iss.; 43-45
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cyclodextrines as an modifying agent for protein matrices
Autorzy:
Skopińska-Wiśniewska, J.
Kozlowska, J.
Bajek, A.
Sionkowska, A.
Powiązania:
https://bibliotekanauki.pl/articles/285960.pdf
Data publikacji:
2018
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
oligosaccharides
collagen
hydrogels
Źródło:
Engineering of Biomaterials; 2018, 21, 148; 85
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The mechanical properties of gelatin/alginate hydrogels
Autorzy:
Skopińska-Wiśniewska, J.
Korkosz, J.
Sionkowska, A.
Powiązania:
https://bibliotekanauki.pl/articles/284232.pdf
Data publikacji:
2016
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
hydrogels
gelatine
alginate
Źródło:
Engineering of Biomaterials; 2016, 19, 138; 49
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modyfikacja właściwości biomateriałów chitozanowych przez dodatki hydrolizatów keratyny
The modification of biomaterials properties by addition of keratin hydrolyzates
Autorzy:
Skopińska-Wiśniewska, J.
Sionkowska, A.
Kozłowska, J.
Płanecka, A.
Powiązania:
https://bibliotekanauki.pl/articles/285212.pdf
Data publikacji:
2009
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
biomateriały chitozanowe
hydrolizaty
kreatyna
biomaterials
hydrolysates
keratin
Źródło:
Engineering of Biomaterials; 2009, 12, no. 89-91; 123-125
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hydrożele kolagenowe sieciowane przy użyciu kwasu skwarynowego
The use of squaric acid for cross-linking of collagen matrices
Autorzy:
Skopińska-Wiśniewska, J.
Kuderko, J.
Bajek, A.
Sionkowska, A.
Powiązania:
https://bibliotekanauki.pl/articles/283929.pdf
Data publikacji:
2014
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
hydrożele kolagenowe
biopolimery
kwas skwarynowy
collagen matrices
biopolymers
squaric acid
Źródło:
Engineering of Biomaterials; 2014, 17, no. 128-129; 71-73
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Charakterystyka usieciowanych materiałów kolagenowych
Characterization of cross-linked collagen matrices
Autorzy:
Skopińska-Wiśniewska, J.
Łuczyńska, N.
Bajek, A.
Rynkiewicz, A.
Sionkowska, A.
Powiązania:
https://bibliotekanauki.pl/articles/285053.pdf
Data publikacji:
2012
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
kolagen
inżynieria tkankowa
struktury 3D
sieciowanie
NHS
collagen
tissue engineering
3D scaffolds
cross-linking
Opis:
Trójwymiarowe, porowate materiały kolagenowe są intensywnie badane jako rusztowania dla inżynierii tkankowej. Ich zadaniem jest zastąpienie macierzy zewnątrzkomórkowej (ECM), zapewnienie odpowiedniego wsparcia mechanicznego oraz środowiska biologicznego dla komórek oraz nowo formującej się tkanki. Właściwości tych materiałów, takie jak wytrzymałość mechaniczna, porowatość i podatność na degradację mogą być modyfikowane przez sieciowanie. Z tego względu celem pracy było otrzymanie oraz scharakteryzowanie trójwymiarowego materiału z neutralizowanego kolagenu usieciowanego za pomocą N-hydroksyimidu kwasu bursztynowego (NHS). Stwierdzono, że średni rozmiar porów, stopień spęcznienia, odporność na degradację oraz wytrzymałość mechaniczna uzyskanych materiałów maleje wraz z wydłużeniem czasu sieciowania NHS. Wszystkie próbki wykazują zadowalające właściwości biologiczne, choć uwagę zwraca fakt, że komórki zasiedlają tylko powierzchnię materiału i nie migrują w głąb skafoldu.
The three-dimensional, porous, collagen scaffolds have been extensively investigated as matrices for tissue engineering. Their task is to replace the extracellular matrix (ECM), provide mechanical support and a biological environment for cells and newly formed tissue. The properties of the materials such as mechanical strength, porosity and susceptibility to degradation can be modified by cross-linking process. For this reason the aim of our work was to obtain and characterize neutralized, 3-D collagen scaffold cross-linked using N-hydroxysuccinimide (NHS) during different time periods. It was found, that average pore size, swelling degree, the susceptibility to degradation and mechanical properties declined with longer cross-linking time. All samples were well tolerated by the cells. However the cells were distributed only on the surface of the material and did not migrate into the structure of the scaffolds.
Źródło:
Engineering of Biomaterials; 2012, 15, 114; 46-51
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Właściwości mechaniczne i termiczne mieszanin poli(alkoholu winylowego) i elastyny
The mechanical and thermal properties of poly(vinyl alcohol)/elastin hydrolysates blends
Autorzy:
Skopińska-Wiśniewska, J.
Sionkowska, A.
Wieczorek, A.
Kozłowska, J.
Płanecka, A.
Powiązania:
https://bibliotekanauki.pl/articles/285948.pdf
Data publikacji:
2011
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
biomateriały
właściwości mechaniczne
właściwości termiczne
biomaterials
mechanical properties
thermal properties
Źródło:
Engineering of Biomaterials; 2011, 14, no. 109-111 spec. iss.; 29-31
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ fotoutlenienia powierzchni filmów poli(metakrylanu metylu) na ich biokompatybilność
Influence of photo-oxidation of surface poli(metyl methacrylate) films on its biocompatibility
Autorzy:
Chaberska, H.
Skopińska-Wiśniewska, J.
Pokrywczyńska, M.
Sionkowska, A.
Powiązania:
https://bibliotekanauki.pl/articles/970902.pdf
Data publikacji:
2008
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
biomateriały
biokompatybilność
fotoutlenianie
biomaterials
biocompatibility
photooxidation
Źródło:
Engineering of Biomaterials; 2008, 11, no. 77-80; 93-95
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Odporność fotochemiczna chitozanu w obecności dodatków: kolagenu, glutationu, kamforochinonu, fenyloalaniny oraz tyrozyny
Photochemical stability of chitosan in the presence of small amount of collagen, glutathione, camphoroquinone, phenylalanine and tyrosine
Autorzy:
Sionkowska, A.
Płanecka, A.
Kozłowska, J.
Łoś, P.
Skopińska-Wiśniewska, J.
Powiązania:
https://bibliotekanauki.pl/articles/285842.pdf
Data publikacji:
2010
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
chitozan
polimery
odporność fotochemiczna
chitosan
polymers
photochemical stability
Źródło:
Engineering of Biomaterials; 2010, 13, no. 99-101; 90-92
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Regeneracja tkanki chrzęstnej szczura z użyciem żelu kolagenowego i mezenchymalnych komórek macierzystych szpiku kostnego, wstępne badania in vivo
Rat cartilage repair using collagen gel and bone marrow mesenchymal stem cells, the in vivo preliminary study
Autorzy:
Bajek, A.
Skopińska-Wiśniewska, J.
Rynkiewicz, A.
Jundziłł, A.
Nowacki, M.
Drewa, T.
Powiązania:
https://bibliotekanauki.pl/articles/286197.pdf
Data publikacji:
2013
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
komórki macierzyste
regeneracja
żel kolagenowy
stem cells
regeneration
collagen gel
Źródło:
Engineering of Biomaterials; 2013, 16, no. 122-123 spec. iss.; 49-50
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Charakterystyka usieciowanych biomateriałów na bazie kolagenu i elastyny
The characterization of cross-linked collagen and collagen/elastin based biomaterials
Autorzy:
Skopińska-Wiśniewska, J.
Sionkowska, A.
Gawron, M.
Kozłowska, J.
Płanecka, A.
Powiązania:
https://bibliotekanauki.pl/articles/286050.pdf
Data publikacji:
2010
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
biomateriały
kolagen
elastyna
biomaterials
collagen
elastin
Źródło:
Engineering of Biomaterials; 2010, 13, no. 99-101; 97-99
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Właściwości powierzchniowe wybranych materiałów chitozanowych
Surface properties of different chitosan materials
Autorzy:
Sionkowska, A.
Kozłowska, J.
Płanecka, A.
Skopińska-Wiśniewska, J.
Łoś, P.
Powiązania:
https://bibliotekanauki.pl/articles/284279.pdf
Data publikacji:
2010
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
materiały chitozanowe
biokompatybilność
właściwości
chitosan materials
biocompatibility
properties
Źródło:
Engineering of Biomaterials; 2010, 13, no. 99-101; 53-55
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effects of prenatal exposure to methylxanthines
Autorzy:
Skopinski, P.
Woronkowicz, M.
Skopinska-Rozewska, E.
Siwicki, A.K.
Powiązania:
https://bibliotekanauki.pl/articles/31027.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
This review discusses epidemiology and laboratory studies on the effects of prenatal methylxanthine administration on some systems developing organisms. They are mainly absorbed from coffee, tea and cocoa products such as cola beverages and chocolate bars. Prenatal methylxanthine exposure can induce several unfavourables changes in the developing organism, which are persistent even in later phases of life. Based on results obtained from animal studies, the effect on embryogenesis is not only poorly understood but also controversial. It is therefore important to study interspecies differences as results may differ depending on animals used and administration methods.
Źródło:
Polish Journal of Veterinary Sciences; 2011, 14, 4
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
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