食品科学 ›› 2013, Vol. 34 ›› Issue (3): 90-92.

• 专家约稿 • 上一篇    下一篇

不同粒度西兰花干粉物化特性及抗氧化活性的研究

杨磊磊1,王然2,王凤舞3,王成荣4   

  1. 1. 青岛农业大学,食品科学与工程学院,果蔬深加工实验室。
    2. 青岛农业大学园艺学院
    3. 青岛农业大学食品科学与工程学院
    4. 青岛农业大学食品学院
  • 收稿日期:2011-07-21 修回日期:2012-12-21 出版日期:2013-02-15 发布日期:2017-12-29
  • 通讯作者: 王成荣 E-mail:qauwcr@126.com
  • 基金资助:
    山东省现代蔬菜产业体系

Study on Physicochemical Properties and Antioxidant Activity of Different Partical Size of Broccoli Powder

  • Received:2011-07-21 Revised:2012-12-21 Online:2013-02-15 Published:2017-12-29

摘要: 摘 要:比较真空冷冻干燥西兰花经超微粉碎的4个不同粒度范围西兰花冻干粉的物理化学特性及其抗氧化活性。结果表明:随着粒度的减小,西兰花冻干粉溶解性提高,流动性减小,容重减小;>500目与240~500目西兰花冻干粉的VC、叶绿素含量没有显著差异,>500目超微粉可溶性蛋白含量明显高于其他粒度粉体。4种粒度西兰花冻干粉清除DPPH自由基的EC50值分别为:80~160目,1.40mg/mL;160~240目,1.32 mg/mL;240~500目,1.28 mg/mL;>500目,1.20 mg/mL。相当于VC(阳性对照)2.54×10-3 mg/mL。80~500目范围内西兰花冻干粉清除DPPH自由基的能力随着其粒度的减小而增大。

Abstract: Abstract:The physicochemical properties and antioxidant activity of different partical size of broccoli powder made by freeze drying were studied in this paper. The result showed that: the smaller the distribution of granule diameter, the lower the flowability and density, but the higher the dissolvability. The content of Vc and chlorophyll from submicron powder and micro powder had no significant difference, but content of soluble protein of submicron powder was significantly higher than other powder. EC50 of DPPH· were 80~160 mesh: 1.40mg/mL; 160~240 mesh:1.32 mg/mL; 240~500 mesh:1.28 mg/mL;>500 mesh:1.20 mg/mL, respectively, amount to 2.54×10-3 mg/mL of Vc(positive control). The DPPH·scavenging activity of broccoli powder were strengthened with the decrease of partical size.

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