Study on antimicrobial activity and stability of citrus peel pigment

The antimicrobial activity and stability of citrus p eel pigment were studied.Determine orange peel pigment's antimicrobial activit y and stability on used food additives and light illumination by single-factor. The pigment had active resistance to familiar microbe such as staphylococcus au reus,escherichia coli,hansenula sp and aspergillus flavus,having good resista nce against native light in room and heat,in 100 ℃ thermostatic 1h pigment sav e ratio was 88%;Oxidant H2O2had biggish effecton pigment stability while reducer Na2SO3 had lesser effect;Expert Mg2+,Cu2+ and Fe3+,other metal ion including Na+,Ca2+,Zn2+ an d K+ had no adverse effect on pigment stability.Food composition and addi tive such as Sugar,Vc and antiseptic had no negative effects on the pigment sta bility.