FOOD SCIENCE ›› 2017, Vol. 38 ›› Issue (14): 310-315.doi: 10.7506/spkx1002-6630-201714048

• Safety Detection • Previous Articles     Next Articles

Analysis of Adulterated Oilseed Rape Honey Using Differential Scanning Calorimetry Combined with Principal Component Analysis and Two-Dimensional Correlation Analysis

CHEN Guiyun, WU Wei, CHEN Kunjie   

  1. (College of Engineering, Nanjing Agricultural University, Nanjing 210031, China)
  • Online:2017-07-25 Published:2017-09-06

Abstract: Differential scanning calorimetry (DSC) curves of adulterated oilseed rape honey in the temperature range of 30–100 ℃ were carefully analyzed by principal component analysis (PCA) and two-dimensional (2D) correlation analysis to reveal the effect of adulteration on DSC characteristics of honey. The results showed that 2D-DSC profiles under temperature perturbation and PCA could support each other and both methods could detect small changes that were difficult to detect in the original curve. Adulteration affected heat flow rate irregularly by and large. The former method was more intuitive in showing the irregular characteristics while the latter could reveal the hidden weak regularity. The two methods could be used in combination to further reveal the DSC properties of adulterated honey samples.

Key words: adulterated honey, differential scanning calorimetry, principal component analysis, two-dimensional correlation analysis

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