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Pigments from Black Glutinous Corn Eliminate Nitrite and Block Nitrosamine Synthesis

SHENG Wei1,2,3,GAO Xiang2,3,XUE Jian-ping2,3,XIE Bi-jun1,*   

  1. 1. College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China;
    2. College of Life Sciences, Huaibei Normal University, Huaibei 235000, China;
    3. Anhui Key Laboratory of Plant Resources and Biology, Huaibei 235000, China
  • Online:2013-09-15 Published:2013-09-27
  • Contact: XIE Bi-jun

Abstract:

The influence of pigment concentration and exposure time on the effectiveness of pigments from
black glutinous corn (PBGC) to eliminate nitrite and block nitrosamine synthesis was investigated in two kinds
of simulated human gastric juices and the results obtained were compared those of VC. At higher concentrations,
PBGC was more effective in eliminating nitrite and blocking nitrosamine synthesis. Both activities varied depending
on reaction time and different simulated gastric juices. In the simulated gastric juice B, 81.37% of the nitrite was
eliminated after 1 h of expoure to 0.10 mg/mL PBGC and nitrosamine synthesis was blocked by up to 57.03% by
PBGC. Comparing it with VC, we concluded that PBGC have a strong capability of eliminating nitrite and blocking
nitrosamine synthesis.

Key words: black glutinous corn, pigment, nitrite, nitrosamine, elimination, block

CLC Number: