Study on PigmentⅠStability from Passionflower Seedcase

Abstract

Abstract: The stability of pigmentⅠ from Passiflora edulis Sims’seedcase was investigated in this study. The results showed that the pH has obvious effects on the pigmentⅠstability. In the range of pH 1～4 there is little effect, but the metallic ions such as Cu2+ and Al3+ can strengthern the pigment color. However, Fe3+ has severe undesirable effect, changing the colorⅠinto some other color. It was found that the pigmentⅠis poor resistant to light, heat, reduct, oxide and NO2 . Bleacher can bleach the pigment Ⅰ.The results showed that the pigmentⅠ is worth of exploiting and utilizing. It may be used as one of the resources of natural edible pigment.

Key words: seedcase of passionflower, pigment, stabilityⅠ -

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Study on PigmentⅠStability from Passionflower Seedcase

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