食品科学 ›› 2010, Vol. 31 ›› Issue (22): 375-377.doi: 10.7506/spkx1002-6630-201022082

• 分析检测 • 上一篇    下一篇

旋光法测定发酵液中2-酮基-D-葡萄糖酸

孙文敬1,周延政1,冯晓燕2,魏 转3,余泗莲4,周 强4   

  1. 1.江苏大学食品与生物工程学院 2.河北师范大学生命科学学院 3.河北化工医药职业技术学院制药工程系 4.百勤异VC 钠有限公司
  • 收稿日期:2010-05-07 出版日期:2010-11-25 发布日期:2010-12-29
  • 通讯作者: 孙文敬 E-mail:sunwenjing1919@163.com
  • 基金资助:

    江苏大学科研启动基金项目(08JDG029);江西省主要学科学术和技术带头人培养计划项目(2008DD00600);
    江西省科技支撑计划项目(赣财教[2008]147号)

Determination of 2-Keto-D-gluconic Acid in Fermentation Broth by Polarimetry

SUN Wen-jing1,ZHOU Yan-zheng1,FENG Xiao-yan2,WEI Zhuan3,YU Si-lian4,ZHOU Qiang4   

  1. (1. School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China;
    2. College of Life Science, Hebei Normal University, Shijiazhuang 050016, China;
    3. Department of Pharmaceutical, Hebei Chemical and Pharmaceutical College, Shijiazhuang 050026, China;
    4. Parchn Sodium Isovitamin C Co. Ltd., Dexing 334221, China)
  • Received:2010-05-07 Online:2010-11-25 Published:2010-12-29
  • Contact: SUN Wen-jing E-mail:sunwenjing1919@163.com

摘要:

通过测定发酵液的旋光度及其葡萄糖质量浓度,计算发酵液中2- 酮基-D- 葡萄糖酸的质量浓度,并考察该方法实际应用的可行性。结果表明:对照品溶液的旋光度、2- 酮基-D- 葡萄糖酸质量浓度和葡萄糖质量浓度之间存在良好的线性关系,R2 > 0.9999;该方法精密度、稳定性和重现性良好,2- 酮基-D- 葡萄糖酸的平均回收率为102.60%,RSD 为2.17%(n=5)。该方法可用于发酵液中2- 酮基-D- 葡萄糖酸的定量检测。

关键词: 2-酮基-D-葡萄糖酸, 发酵液, 旋光法, 测定

Abstract:

The 2-keto-D-gluconic acid in fermentation broth was calculated on the basis of glucose concentration determined by optical rotation degree. The application feasibility of polarimetry was also investigated. Results indicated that a good linear relationship between optical rotation degree and the concentration of 2-keto-D-gluconic acid and glucose (R2 > 0.9999). The average recovery rate was 102.60% with RSD of 2.17%. This method has characteristics of precision, stability and reproducibility. Therefore, it can be used for determining 2-keto-D-gluconic acid in fermentation broth.

Key words: 2-keto-D-gluconic acid, glucose, fermentation broth, polarimetry, determination

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