Acetylated Anthocyanidin 3-&lt;i&gt;O&lt;/i&gt;-di-glycosides in Red-purple Flowers and Grayed-purple Leaves of &lt;i&gt;Saintpaulia&lt;/i&gt; ‘Tomoko’

A spectroscopic study was conducted to evaluate the colour degradation mechanism of anthocyanin-rich extract from butterfly pea petal. The extract was diluted in four different solvent systems, which were buffer solution pH 7 (AQ7) and the mixture of organic solvent with buffer solution pH 7 (4:1 v/v). The organic cosolvent involved were methanol (ME7), ethanol (ET7) and acetone (AC7). The samples were stored in containers with 0% and 50% headspace, and their colour intensity, total anthocyanin and hypsochromic shift were evaluated periodically. The rank of colour and anthocyanin degradation from the biggest was AQ7 > ME7 > ET7 > AC7. The longest hypsochromic shift was AQ7 > ME7 > ET7, while in AC7 the shift was absent. There was evidence that the volume of package headspace provoked colour stability. The colour degradation in AC7 was proposed to occur through hydrophobic interaction unfolding, and in AQ7 was through the deacylation, while in ME7 and ET7 was due to both mechanisms.

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Acetylated Anthocyanidin 3-<i>O</i>-di-glycosides in Red-purple Flowers and Grayed-purple Leaves of <i>Saintpaulia</i> ‘Tomoko’

Cited by 5 publications

References 11 publications

Anthocyanins: a comprehensive review on biosynthesis, structural diversity, and industrial applications

Anthocyanins: a comprehensive review on biosynthesis, structural diversity, and industrial applications

Association between differential gene expression and anthocyanin biosynthesis underlying the diverse array of petal colors in Zinnia elegans

The colour degradation of anthocyanin-rich extract from butterfly pea (Clitoria ternatea L.) petal in various solvents at pH 7

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