食品科学

• 工艺技术 • 上一篇    下一篇

火龙果皮原花青素提取纯化及定性分析

杨志娟,曾 真*,吴晓萍   

  1. 广东海洋大学食品科技学院,广东 湛江 524025
  • 出版日期:2015-01-25 发布日期:2015-01-16
  • 通讯作者: 曾 真

Extraction, Purification and Qualitative Analysis of Proanthocyanidins from Pitaya Peel

YANG Zhijuan, ZENG Zhen*, WU Xiaoping   

  1. College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524025, China
  • Online:2015-01-25 Published:2015-01-16
  • Contact: ZENG Zhen

摘要:

采用大孔树脂对原花青素粗品进行分离纯化。比较了AB-8、DM130、ADS-17三种大孔树脂对原花青素的吸附和解吸能力,选择AB-8型大孔树脂为吸附树脂。对AB-8大孔树脂吸附解吸条件进行优化,探讨上样流速、解吸流速和解吸剂体积分数3 个因素对分离纯化效果的影响。结果表明:AB-8大孔树脂提纯工艺的最佳条件为上样流速2 mL/min、解吸流速1 mL/min、解吸剂体积分数50%。通过花青素反应与高效液相色谱-质谱对提取物进行定性分析,证实该提取物中含有的原花青素为儿茶素、表儿茶素和二聚体,且原花青素纯度为96.65%。

关键词: 火龙果皮, 原花青素, 提取纯化, 定性分析

Abstract:

The crude proanthocyanidins extracted from pitaya peel were purified by macroporous adsorption resin. AB-8
macroporous resin was selected as the best adsorbent for proanthocyanidins based on adsorption and desorption capacities in
comparison with DM130 and ADS-17. Effects of sample loading flow rate, elution flow rate and eluent concentration on the
purification of pitaya peel proanthocyanidins by AB-8 macroporous resin were investigated. The best results were achieved
by sample loading at a flow rate of 2 mL/min followed by elution with 50% ethanol at a flow rate of 1 mL/min. The purified
product contained 96.65% proanthocyanidins including catechin, epicatechin and dimmer as indicated by colorimetric
observation and qualitative analysis by high performance liquid chromatography-electrospray ionization-mass spectrometry
(HPLC-ESI-MS).

Key words: pitaya peel, proanthocyanidins, extraction and purification, qualitative analysis

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