食品科学 ›› 2012, Vol. 33 ›› Issue (17): 87-89.

• 基础研究 • 上一篇    下一篇

浸提溶剂对红叶甜菜红色素的影响

李 伟,周大寨   

  1. 生物资源保护与利用湖北省重点实验室,湖北民族学院生物科学与技术学院
  • 收稿日期:2011-07-21 修回日期:2012-06-08 出版日期:2012-09-15 发布日期:2012-11-09
  • 通讯作者: 李伟 E-mail:hexulicheng@yahoo.com.cn

Effect of Extraction Solvents on the Stability of Red Pigment from Red Beet Stems

  • Received:2011-07-21 Revised:2012-06-08 Online:2012-09-15 Published:2012-11-09

摘要: 研究不同溶剂浸提的红叶甜菜红色素在不同温度及光照条件下的稳定性。采用80%乙醇和蒸馏水为提取溶剂,将提取的色素液在230~700nm范围内进行紫外-可见扫描,而后分别探讨不同温度和光照对色素稳定性的影响,并将醇提与水提液色素进行HPLC分析。该色素的水提液液和醇提液共有两个明显的吸收峰,分别为270nm和538nm;水提液的红叶甜菜色素对温度和光照略微稳定,且色素的纯度也高于醇提色素。

关键词: 红叶甜菜, 稳定性, 高效液相色谱

Abstract: Objective: To explore the thermal and light stability of red pigment extracted with different solvents from red beet stems (Beta vulgaris L. var. rubra). Methods: Red pigment from red beet stems was extracted with two different solvents, 80% ethanol solution and distilled water. The resulting extracts were scanned in the wavelength range of 230-700 nm and evaluated for their stability under various temperature and light conditions. Besides, both extracts were analyzed by HPLC. Results: The UV-visible absorption spectra of the aqueous and ethanol extracts displayed two distinct absorption peaks at 270 nm and 538 nm, respectively. The aqueous extract exhibited better thermal and light stability and higher purity than the ethanol extract.

Key words: red beet, stability, HPLC

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