食品科学 ›› 2012, Vol. 33 ›› Issue (2): 208-210.doi: 10.7506/spkx1002-6630-201202045

• 分析检测 • 上一篇    下一篇

离子色谱直接电导法检测糖蜜中的甜菜碱

张晨光,潘 见,黄文平,杨 毅   

  1. 1.合肥工业大学 农产品生物化工教育部工程研究中心 2.安徽皖仪科技股份有限公司
  • 收稿日期:2017-02-16 修回日期:2017-02-16 出版日期:2012-01-25 发布日期:2012-01-16

Determination of Betaine in Molasses by Ion Chromatography with Direct Conductivity Detection

ZHANG Chen-guang,PAN Jian,HUANG Wen-ping,YANG Yi   

  1. 1.Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, Hefei 230009, China; 2. Anhui Wanyi Science and Technology Co. Ltd., Hefei 230088, China
  • Received:2017-02-16 Revised:2017-02-16 Online:2012-01-25 Published:2012-01-16

摘要: 建立甜菜碱的离子色谱直接电导测定法,用于糖蜜中提取甜菜碱的生产工艺。采用WY阳离子交换柱(150mm×4.6mm),柱温30℃,2.0mmol/L甲烷磺酸溶液为流动相,流速1.0mL/min,电导检测池。结果表明,甜菜碱在0.5~50mg/L质量浓度范围内线性关系良好(r = 0.9995),加标回收率在93.5%~99.7%之间,检测限为0.15mg/L。所建方法适用于糖蜜中提取甜菜碱生产工艺中质量控制。

关键词: 离子色谱, 直接电导, 糖蜜, 甜菜碱

Abstract: An ion chromatography-direct conductivity detection method was developed for determining betaine in molasses. The chromatographic separation of betaine was achieved on a WY cation column (150 mm × 4.6 mm i.d.) using 2.0 mmol/L MSA as mobile phase at a flow rate of 1.0 mL/min. The column was set at 30 ℃. Betaine was detected using a direct conductivity detector. A good linear range of the calibration curve was achieved over the concentration of 0.5-50 mg/L (r = 0.9995) with recovery rate of 93.5%-99.7% and detection limit of 0.15 mg/L. The method was suitable for the determination of betaine and quality control for betaine extraction from molasses.

Key words: ion chromatography, direct conductivity detection, betaine, molasses

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