journal6 ›› 2006, Vol. 27 ›› Issue (4): 93-98.

• Chemistry and chemical engineering • Previous Articles     Next Articles

Study on the Chemistry Stability of Yellow Pigment from Oenothera biennis L.Flower


  1.  (College of Chemistry and Chemical Engineering,Jishou University,Jishou  416000,Hunan China)
  • Online:2006-07-25 Published:2012-08-22

Abstract: This paper studied the stability of yellow pigment from Oenothera biennis L.flower in the following different additive agents:light,heat,acid,sodium hydroxide,hydrogen peroxide,reducer,metal ions,saccharose,Vc,etc.The experimental results show that the pigment can easily dissloved in the solvent of 95% ethanol,pure ethanol,acetone,ether,ethyl ethanoate etc.It has a certain stability toward light,heat,sodium hydroxide,hydrogen peroxide,metal ions(Na+,Mg2+,Ca2+) and food additives ect,however,it has less stability to solutions of hydrochloric acid,sodium sulfite,Cu2+ and Fe3+gave undesirable effects.

Key words: Oenothera biennis L., yellow pigment, stability

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