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林产化学与工业

林产化学与工业 ›› 2013, Vol. 33 ›› Issue (4): 62-66.doi: 10.3969/j.issn.0253-2417.2013.04.012

• 1研究报告 • 上一篇    下一篇

康仙花色素的提取及其理化性质的研究

王晓晴1, 王榆元2, 钟敏1, 曾晓雄1   

  1. 1. 南京农业大学食品科技学院, 江苏 南京 210095;2. 南华大学化学化工学院, 湖南 衡阳 421001
  • 收稿日期:2012-06-14 修回日期:1900-01-01 出版日期:2013-08-30 发布日期:2013-08-30

Extraction the Pigment of Kang-xian Flower and Its Physical-chemical Properties

WANG Xiao-qing1, WANG Yu-yuan2, ZHONG Min1, ZENG Xiao-xiong1   

  1. 1. College of Food Science and Technology, Nanjing Agriculture University, Nanjing 210095, China;2. College of Chemistry and Chemical Engineering, Nanhua University, Hengyang 421001, China
  • Received:2012-06-14 Revised:1900-01-01 Online:2013-08-30 Published:2013-08-30

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摘要： 以康仙花为原料,提取康仙花色素并对其理化性质进行了研究。实验结果证明极性溶剂乙醇、甲醇和水对康仙花有效成分具有很强的提取能力,其中乙醇-水溶液(60:40,体积比)对于康仙花色素的提取能力最大;康仙花色素在220及260nm处均存在极高的吸收峰值;在酸性条件下康仙花色素颜色为红色(pH值1~4),且随pH值增大而变浅;在碱性条件下康仙花色素颜色转变为黄绿色;在pH值为1,60℃以下时,康仙花乙醇提取物对光、热具有较好的稳定性; Cu2+、Fe3+离子的存在对康仙花提取物的颜色和稳定性有很大的影响;食品添加剂Vc会破坏康仙花色素的稳定性;此外,康仙花的抗还原能力强于其抗氧化能力。

关键词: 康仙花, 理化性质, 色素

Abstract: The extraction conditions and physical-chemical properties of the pigment from Kang-xian flower were studied. Polar solvent such as ethonal, methonal and water were proved to effectively extract the pigment of Kang-xian flower. The most effective solvent to extract the pigment of Kang-xian flower was ethonal-water (60:40, volume ratio). The absorption peaks of the pigment from Kang-xian flower appeared at 220 nm and 260 nm by UV. The color of the pigment of Kang-xian was red at the pH 1-4, but it was faded as the pH value increased. It turned to yellow-green color when the pH value was over 7. The stability of the pigment of Kang-xian flower was good with the light and hot by pH 1 and the temperature was under 60℃. Cu2+ and Fe3+ had great influences on color and stability of the pigment. The food additive Vc also could decrease the stability of the pigment. Relative to the anti-oxidation,the anti-reduction ability of the pigment of Kang-xian flower was seemed more superior.

Key words: Kang-xian flower, physical-chemical properties, pigment

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