食品科学 ›› 2012, Vol. 33 ›› Issue (2): 227-230.doi: 10.7506/spkx1002-6630-201202050

• 分析检测 • 上一篇    下一篇

高效液相色谱法测定苹果果实中的有机酸

郭 燕,梁 俊,李敏敏,赵政阳   

  1. 西北农林科技大园艺学院
  • 出版日期:2012-01-25 发布日期:2012-01-16
  • 基金资助:
    国家现代农业产业技术体系专项(nycytx-08-01-03);陕西省科技攻关项目(2010K01-04-1)

Determination of Organic Acids in Apple Fruits by HPLC

GUO Yan,LIANG Jun,LI Min-min,ZHAO Zheng-yang   

  1. College of Horticulture, Northwest A & F University, Yangling 712100, China
  • Online:2012-01-25 Published:2012-01-16

摘要: 目的:建立苹果果实中有机酸含量的测定方法。方法:采用高效液相色谱法(high performance liquid chromatography,HPLC),水浴超声提取果实中的有机酸,色谱条件:色谱柱为WatersWAT010290(7.8mm×300mm,7μm),流动相为0.01mol/L H2SO4溶液,流速0.5mL/min,柱温50℃,检测波长210nm。结果:在选定的色谱条件下,柠檬酸、酒石酸、苹果酸、琥珀酸、乙酸和草酸都得到很好分离。6种有机酸的线性范围为0.001~1.000(草酸为0.800)mg/mL,标准曲线相关系数均在0.9998以上;精密度检测,RSD为0.10%~1.59%(n=5);重现性检测,RSD为1.79%~4.26%(n=5);回收率在91.05%~105.18%之间。结论:该方法简单快捷、准确、重复性好,可用于苹果果实中的有机酸测定。

关键词: 苹果, 高效液相色谱法(HPLC), 有机酸

Abstract: Objective: To establish a method for determining organic acids in apple fruits by high performance liquid chromatography (HPLC). Methods: Organic acids were extracted from apple fruits by ultrasonic-assisted water extraction. An IC PAKTM ION Exclusion (Waters, WAT010290) column was used to separate organic acids. The mobile phase was 0.01 mol/L H2SO4 with a flow rate of 0.5 mL/min. The column temperature and UV detection wavelength were set as 50 ℃ and 210 nm, respectively. Results: Under chosen experimental conditions, six organic acids could be successfully separated. All the calibration curves for these organic acids displayed a good linear relationship with correlation coefficients above 0.9998 and precision RSDs of 0.10%-1.59% (n = 5) and repeatability RSDs of 1.79%-4.26% (n = 5). The recovery rates of six organic acids were in the range of 91.05%-105.18%. Conclusion: The method is convenient, rapid, accurate and applicable to determine organic acids in apple fruits.

Key words: apple, high performance liquid chromatography (HPLC), organic acid

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