食品科学 ›› 2012, Vol. 33 ›› Issue (18): 312-315.

• 技术应用 • 上一篇    

竹叶黄酮在豆浆保鲜中的应用

魏凤玉,方 菊,陈 玮,杨艳明   

  1. 合肥工业大学化学工程学院
  • 收稿日期:2011-09-05 修回日期:2012-07-31 出版日期:2012-09-25 发布日期:2012-09-07
  • 通讯作者: 魏凤玉 E-mail:weifyliuj@yahoo.com.cn
  • 基金资助:

    国家大学生创新性实验计划项目

Application of Bamboo Leaf Flavonoids for Preservation of Soybean Milk

  • Received:2011-09-05 Revised:2012-07-31 Online:2012-09-25 Published:2012-09-07

摘要: 采用平板计数法研究竹叶黄酮(BLF)对豆浆中细菌的抑制作用和保鲜效果。结果表明:4℃时添加0.01% BLF对豆浆的保鲜效果较好,而30℃时BLF的最佳用量为0.015%;感官评定结果显示,添加0.01%~0.015%的BLF对豆浆的色泽和风味均无不良影响,且可使保质期延长6h;香兰素与BLF对豆浆的保鲜效果具有一定协同作用,30℃时添加0.015% BLF与香兰素质量比为4:1的复合保鲜剂,可使豆浆的保质期延长8h。

关键词: 竹叶黄酮, 豆浆, 香兰素, 天然保鲜剂

Abstract: The effect of bamboo leaf flavonoids (BLF) on bacterial inhibition and quality preservation of soybean milk was investigated by plate culture count in the present study. The addition of 0.01% (wt %) BLF has an obvious fresh-keeping effect on soybean milk during storage at 4 ℃, and the optimal BLF dose for preserving soybean milk at 30 ℃ was 0.015% (wt %).  Sensory evaluation displayed that 0.01%-0.015% (wt %) of BLF had no impact on the color and flavor of soybean milk, and BLF could prolong its preservation time from 8 h to 14 h. A synergistic effect of vanillin and BLF against spoilage microorganisms in soybean milk was also achieved. The shelf life of soybean milk stored at 30 ℃ could be prolonged from 8 h to 16 h when 0.015% (wt %) of BLF and vanillin mixture (at a mass ratio of 4:1) was applied.

Key words: bamboo leaf flavonoids, soybean milk, vanillin, natural preservative

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