From gas chromatogram chart, in addition to less composition of volatile compounds, onion oleoresin contained more resin that has sharp flavor and pigment.

 
  • 从气相色谱图上可以看出,洋葱油树脂中除含少量洋葱精油外,主要是沸点较高的倍半萜及代表辛香味的树脂成分、色素等。
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