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Effects of Metal Ions on the Stability of Purple Sweet Potato Pigment

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Abstract:

Purple sweet potato pigment is a natural food pigment, the stability is important to its quality assurance. The effects of metal ions on the stability of purple sweet potato pigment were investigated. The results showed that Mg2+and Fe3+ were conductive to pigments stability in the initial storage, and with the concentration increased, the pigment was more stable. But K+, Ca2+, Na+, Cu2+, Mg2+ and Fe3+ had brought the color density, the color intensity and the preservation rate of purple sweet potato pigment down in the long-term storage.

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Periodical:

Advanced Materials Research (Volumes 396-398)

Pages:

1325-1328

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.396-398.1325

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Online since:

November 2011

Authors:

Su Hong Li, Tuo Ping Li, Wei Na Fu, Xiao Juan Yu, Zhong Shen Zhao, You Feng Jia

Keywords:

Metal Ion, Purple Sweet Potato Pigment, Stability

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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