期刊论文

Wang, X.-Q.(wangxq@njau.edu.cn)

中文

林产化学与工业

0253-2417

2013

33

4

62-66

10.3969/j.issn.0253-2417.2013.04.012

江苏省自然科学基金项目（BK2008425）；

本校为其他机构

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; Cu~(2+)、Fe~(3+)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。

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....