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Kinetics of Thermal Degradation of the Anthocyanins Delphinidin-3-rutinoside and Malvidin-3-glucoside

✍ Scribed by Tanchev, St. S. ;Yoncheva, N.

Book ID
102206840
Publisher
John Wiley and Sons
Year
1974
Tongue
English
Weight
307 KB
Volume
18
Category
Article
ISSN
0027-769X

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✦ Synopsis

Abstract

The kinetics of the thermal degradation of the two anthocyanins delphinidin‐3‐rutinoside and malvidin‐3‐glucoside at 78, 88, 98 and 108 °C, depending on the pH and the type of solvent has been investigated. The first order reaction of delphinidin‐3‐rutinoside and malvidin‐3‐glucoside degradation has been established. The rate constants (K ± 10^−5^s^−1^), the activation parameters, factor Q~10~ and the half‐decay period have been calculated. The rate of delphinidin‐3‐rutinoside degradation is higher than that of malvidin‐3‐glucoside.

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Products of Thermal Degradation of the Anthocyanins Cyanidin-3-glucoside, Cyanidin-3-rutinoside and Cyanidin-3-sophoroside
✍ Tanchev, S. ;Ioncheva, N. 📂 Article 📅 1976 🏛 John Wiley and Sons 🌐 English ⚖ 348 KB

## Abstract During thermal degradation of anthocyanins, cyanidin‐3‐glucoside, cyanidin‐3‐rutinoside, cyanidin‐3‐sophoroside, at 98 °C in model systems of pH = 1, 2.5 3.5 and 4.5, seven compounds were isolated by means of paper chromatography. Among them quercetin, phloroglucin‐aldehyde and protocat