Study on the Stabilization of Pigment Extracted from Vaccinium bracteatum Thumb.Leaves(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Title:: Study on the Stabilization of Pigment Extracted from Vaccinium bracteatum Thumb.Leaves

Author(s):: DOU Kang-ning; LI Yu-lan; WANG Fu-gang; Department of Food Technology，Luohe Medical School，Luohe，Henan 462000

Abstract:: Taking pigment extracted from Vaccinium bracteatum Thumb.leaves as experimental material，the effects of temperature，light，pH，metal ions and oxidizing agents on the stability of pigment were studied.The results showed that the pigment was stable when heating below 100℃，exposuring in light or in acidification，but it was very sensitive to alkalinity.Cu²⁺ and Zn²⁺ had hyperchromic effect on this pigment，but the impact was not big，Fe³⁺ had larger hyperchromic effect on this pigment.The pigment could be oxidized by H₂O₂，and the pigment color became shallow.

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Last Update: 2014-08-25