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Stability of Pigment from Black Sticky Rice

Han Yao-ping

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Abstract

Stability of pigment from black sticky rice was studied.Results indicated that the pigment exhibited a good stability in acidic media,while its stability was weak in alkaline media.The pigment exhibited excellent thermal and light stability.Little effect of sugars,salts,citric acid,starch,potassium sorbate,sodium benzoate and metal ions including Mn2+,Na+,K+,Zn2+,Cu2+,Ca2+ and Mg2+ on pigment stability was observed.However,Fe3+ had an obvious adverse effect on the stability of black sticky rice pigment.

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What this paper is about

Stability of pigment from black sticky rice was studied.Results indicated that the pigment exhibited a good stability in acidic media,while its stability was weak in alkaline media.The pigment exhibited excellent thermal and light stability.Little effect of sugars,salts,citric acid,starch,potassium sorbate,sodium benzoate and metal ions including Mn2+,Na+,K+,Zn2+,Cu2+,Ca2+ and Mg2+ on pigment stability was observed.However,Fe3+ had an obvious adverse effect on the stability of black sticky rice pigment.

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Available abstract

Stability of pigment from black sticky rice was studied.Results indicated that the pigment exhibited a good stability in acidic media,while its stability was weak in alkaline media.The pigment exhibited excellent thermal and light stability.Little effect of sugars,salts,citric acid,starch,potassium sorbate,sodium benzoate and metal ions including Mn2+,Na+,K+,Zn2+,Cu2+,Ca2+ and Mg2+ on pigment stability was observed.However,Fe3+ had an obvious adverse effect on the stability of black sticky rice pigment.

Key concepts: Potassium sorbate, Pigment, Sodium benzoate, Citric acid, Thermal stability, Chemistry, Black rice, Potassium

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