食品科学 ›› 2010, Vol. 31 ›› Issue (20): 311-313.doi: 10.7506/spkx1002-6630-201020064

• 分析检测 • 上一篇    下一篇

高效液相色谱法测定罗汉果中VC的含量

宁德生,梁小燕,方宏   

  1. 广西壮族自治区、中国科学院广西植物研究所
  • 收稿日期:2010-01-05 出版日期:2010-10-25 发布日期:2010-12-29
  • 通讯作者: 宁德生 E-mail:ndshgxib@sina.com

Determination of the Content of Vitamin C in Siraitia grosvenorii Fruits by HPLC

NING De-sheng,LIANG Xiao-yan,FANG Hong   

  1. Guangxi Institute of Botany, Guangxi Zhuangzu Autonomous Region and China Academy of Sciences, Guilin 541006, China
  • Received:2010-01-05 Online:2010-10-25 Published:2010-12-29
  • Contact: NING De-sheng E-mail:ndshgxib@sina.com

摘要:

目的:建立HPLC 色谱法测定罗汉果中VC 含量的方法。采用5g/L 草酶对罗汉果浸提15min,对提取液中VC 进行检测,具体方法:采用SinoChrom ODS-BP(250mm × 4.6mm,5μm)分离;流动相为体积分数0.05% 磷酸溶液- 甲醇(98:2,V/V);流速1.0mL/min;采用二极管阵列多波长检测器确定VC 的最大吸收波长为242nm;测定温度25℃;进样量10μL。结果表明:VC 溶液0.08~0.50mg/mL 范围线性关系良好,相关系数r=1;回收率为99.3%,RSD 为1.93%。结论:该方法操作简便快速,精密度和稳定性好,适用于罗汉果VC 含量的测定。

关键词: 罗汉果, HPLC, Vc

Abstract:

Objective: To set up a HPLC method for the determination of the content of vitamin C in the fruits of Siraitia grosvenorii. Methods: The chromatographic separation was achieved on SinoChrom ODS-BP (250 mm×4.6 mm, 5μm) held at 25 ℃ using a mixture composed of 0.05% H3PO4 and CH3OH (98:2, V/V) as the mobile phase at a flow rate of 1.0 mL/min. The diode array detector wavelength was set at 242 nm. The injection volume used was 10μL. Results: The developed calibration curve of vitamin C displayed good linearity over the concentration range from 0.08 to 5.0 mg/mL, with a correlation coefficient equaling 1. The average recovery of five replicates for vitamin C was 99.3% with 1.93% relative standard deviation (RSD). Conclusion: This method is simple, quick, precise and stable, and can used for determining the content of vitamin C in the fruits of Siraitia grosvenorii.

Key words: Siraitia grosvenorii, HPLC, VC

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