Effect of Metal Ions on Color Stability of Anthocyanins from Lycium ruthenicu Murr

doi:10.14088/j.cnki.issn0439-8114.2018.22.031

HUBEI AGRICULTURAL SCIENCES ›› 2018, Vol. 57 ›› Issue (22): 113-117.doi: 10.14088/j.cnki.issn0439-8114.2018.22.031

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Effect of Metal Ions on Color Stability of Anthocyanins from Lycium ruthenicu Murr

MENG Qing-xin¹, GAO Yi-wen², YAO Si-min-qiang³, LYU Yuan-ping³

1.Middle School Attached to Sichuan University,Chengdu 610065,China;
2.Faculty of Architecture and Urban Planning,Chongqing University,Chongqing 400030,China;
3.College of Light Industry, Textile and Food Engineering,Sichuan University,Chengdu 610065,China

Received:2018-05-28 Online:2018-11-25 Published:2019-12-19

Abstract

Abstract: With the anthocyanins in Lycium ruthenicum Murr as the object,using the method of CIELAB color space,the change of value of a*、b* and △E* were used to study the effect of ten kinds of metal ions on color stability of anthocyanins in L. ruthenicum Murr. The results showed that K⁺,Na⁺,Ca²⁺,Mn²⁺,Mg²⁺ and Zn²⁺ had no obvious influence. Cu²⁺ obviously fade the color,Al³⁺ aggregated the color of the solution obviously,Fe²⁺ produced atropurpureus in the solution and Fe³⁺ destroyed the anthocyanins. In the preparation and application of L. ruthenicum Murr anthocyanin,the contact of iron,copper and aluminum should be avoided as far as possible,so as not to affect the stability of color.

Key words: Lycium ruthenicu Murr, anthocyanins, color stability, CIELAB color space

CLC Number:

TS255.1

MENG Qing-xin, GAO Yi-wen, YAO Si-min-qiang, LYU Yuan-ping. Effect of Metal Ions on Color Stability of Anthocyanins from Lycium ruthenicu Murr[J]. HUBEI AGRICULTURAL SCIENCES, 2018, 57(22): 113-117.

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Effect of Metal Ions on Color Stability of Anthocyanins from Lycium ruthenicu Murr

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