1978
DOI: 10.1021/jf60216a052
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Thermal kinetic degradation of betanin and betalamic acid

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Cited by 68 publications
(53 citation statements)
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References 4 publications
(5 reference statements)
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“…"Browning substances" as identified by Saguy, Kopelman, and Mizrahi (1978) are responsible for the absorbance measured around 400 nm and may be observed here. The characteristic wavelength measured after treatment increases compared to the one classically obtained for Betanin, and the colour difference between sheared and unsheared solution can also be seen by naked eyes.…”
Section: Influence Of Shear Rates On the Degradation Rate Of Betaninsupporting
confidence: 54%
“…"Browning substances" as identified by Saguy, Kopelman, and Mizrahi (1978) are responsible for the absorbance measured around 400 nm and may be observed here. The characteristic wavelength measured after treatment increases compared to the one classically obtained for Betanin, and the colour difference between sheared and unsheared solution can also be seen by naked eyes.…”
Section: Influence Of Shear Rates On the Degradation Rate Of Betaninsupporting
confidence: 54%
“…The activation energy (E a ) of this yellow-orange pigment degradation was determined from the slope of the curve as 65.1 kJ N mol -1 using the Arrhenius equation. The literature data vary between 67.9 -85.4 kJ N mol -1 for beetroot red pigment betanine [1,9,12] and 105.5 kJ N mol -1 for beetroot yellow pigment vulgaxanthine I [3]. The E a value of prickly pear red pigment betanine was reported as 32.3 kJ N mol -1 for diluted and 44.9 kJ N mol -1 for concentrated solutions [14].…”
Section: Resultsmentioning
confidence: 99%
“…This pH value is very close to the natural pH (pH 5.8) of this fruit. Maximum stability of the red beet pigment was reported around pH 5.0 -6.0 [1,3,10] and that of garambullo pigment pH 4.0 -6.0 [15]. Forni et al [13] reported that blood-red prickly pear pigments show an optimum stability at pH 5.0 and ordinary temperatures.…”
Section: Resultsmentioning
confidence: 99%
“…Do produktów termicznej degradacji betaniny zalicza się również izobetaninę i dekarboksylowaną betaninę. Najwyższą stabilność związki te wykazują, gdy wartość pH środowiska mieści się w przedziale 4,0 -6,0, w temperaturze pokojowej [36,43]. Większość reakcji termicznego rozpadu betaniny są to reakcje odwracalne, zależne od stężenia początkowego betaniny, temperatury i wartości pH środowiska.…”
Section: Charakterystyka I Występowanie Betacyjaninunclassified