Which measurement should i use for the test of light stability? Color Value or Absorbance ?

07 December 2020 1 4K Report

I would like to know more about the light stability test for anthocyanin using UV light and agar solution. If we use agar solution, how can we read absorbance value? Or else can we show the light stability of anthocyanin in color measured with tintometer. Thank you all in advance.

David Oulton

The Tintometer colour measurement instrument is made by the Lovibond Company in Aylesbury Wiltshire UK and uses visual standard comparison to quantify colour. Coordinate colour and colour difference definitions in Cielab Cluv and CIE XYZ colour space, covering both light stability (i.e. colour fastness) and AOC Light Absorbance scale are supported.

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