食品科学

• 基础研究 • 上一篇    下一篇

槲皮素微胶囊的贮藏稳定性及抗氧化活性

廖 霞1,杨小兰1,李 瑶1,王丽颖1,明 建1,2,*   

  1. 1.西南大学食品科学学院,重庆 400715;2.重庆市特色食品工程技术研究中心,重庆 400715
  • 出版日期:2017-01-15 发布日期:2017-01-16

Storage Stability and Antioxidant Activity of Quercetin Microcapsules

LIAO Xia1, YANG Xiaolan1, LI Yao1, WANG Liying1, MING Jian1,2,*   

  1. 1. College of Food Science, Southwest University, Chongqing 400715, China;
    2. Chongqing Special Food Programme and Technology Research Center, Chongqing 400715, China
  • Online:2017-01-15 Published:2017-01-16

摘要: 以壳聚糖、海藻酸钠为壁材,采用复凝聚法制备槲皮素微胶囊,通过结构表征、加速贮藏释放和体外模拟消化对槲皮素微胶囊的稳定性及抗氧化活性进行综合评价。红外光谱分析表明,槲皮素成功包埋在壳聚糖-海藻酸钠复合物中;扫描电子显微镜显示微胶囊表面疏松多孔,呈不规则形状;X-射线衍射分析表明,槲皮素在微胶囊中的结晶性质没有发生变化;微胶囊能提高槲皮素在光照、有氧、温度50 ℃、相对湿度84%条件下的稳定性,经过体外模拟胃肠消化后,表现出较好的抗氧化活性。

关键词: 槲皮素, 微胶囊, 贮藏稳定性, 抗氧化活性

Abstract: Using sodium alginate and chitosan as the wall materials, quercetin microcapsules were prepared by complex
coacervation. The structural characterization, storage stability, in vitro digestion stability and antioxidant activity of quercetin
microcapsules were studied. Quercetin was successfully entrapped in chitosan-alginate complexes as indicated by infrared
spectral (IR) analysis. The porous and loose surface of microcapsules was observed by scanning electron microscopy (SEM).
X-ray diffraction (XRD) analysis showed no change in crystal characteristics of quercetin in microcapsules. Microcapsules
can improve the stability of quercetin under the conditions of light, oxygen, high temperature and high relative humidity.
After simulated gastrointestinal digestion, it had stronger antioxidant activity.

Key words: quercetin, microencapsulation, storage stability, antioxidant activity

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