食品科学 ›› 2012, Vol. 33 ›› Issue (6): 186-189.doi: 10.7506/spkx1002-6630-201206040

• 分析检测 • 上一篇    下一篇

基于紫外光谱的花生油掺伪检测

杨 晨,于修烛*,王 昕,桂海龙   

  1. 西北农林科技大学食品科学与工程学院
  • 出版日期:2012-03-25 发布日期:2012-03-03
  • 基金资助:
    中央高校基本科研业务费专项(QN2009074)

Ultraviolet Absorption Spectroscopy for the Detection of Adulteration in Peanut Oil

YANG Chen,YU Xiu-zhu*,WANG Xin,GUI Hai-long   

  1. (College of Food Science and Engineering, Northwest A & F University, Yangling 712100, China)
  • Online:2012-03-25 Published:2012-03-03

摘要: 为建立一种花生油掺伪检测方法,利用花生油和其他食用油在紫外光谱特征吸收峰不同,建立定量检测模型及并对模型进行验证分析。结果表明:花生油与其他食用油在280nm处特性吸收存在差异性,利用这一特性建立花生油掺伪定量分析模型,其方程为y=46.72x-27.51(y为掺伪比例/%;x为吸光度),相关系数为0.9779,标准差为3.099%。盲样验证预测值与实际掺伪值高度线性相关,相关系数为0.9841,标准差为3.849%,检出限约为10%,相对误差均小于15%。紫外光谱花生油掺伪快速检测方法是可行的。

关键词: 花生油, 掺伪, 紫外光谱, 检测

Abstract: An ultraviolet absorption spectroscopic method for detecting adulteration in peanut oil was developed. Based on differences in the ultraviolet characteristic adsorption peaks between peanut oil and other edible oils, a quantitative detection model was established as follows: y=46.72x-27.51 [y=adulteration ratio (%, m/m); x=absorbance]. The correlation coefficient of the model was 0.9779 and the standard deviation 3.099%. A highly linear correlation was observed between the predicted and actual adulteration ratios of an unknown sample with a correlation coefficient of 0.9841 and a standard deviation of 3.849%. The detection limit was approximately 10% and the relative error was less than 15%. The ultraviolet absorption spectroscopic method is applicable for the rapid detection of adulteration in peanut oil.

Key words: peanut oil, adulteration, ultraviolet absorption spectroscopic method, detection

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