Quick vacuum drying of liquid samples prior to ATR-FTIR spectral collection improves the quantitative prediction: a case study of milk adulteration

AYVAZ H., TEMİZKAN R.

INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY, cilt.53, sa.11, ss.2482-2489, 2018 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 53 Sayı: 11
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1111/ijfs.13839
  • Dergi Adı: INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.2482-2489
  • Anahtar Kelimeler: Adulteration, bovine, chemometrics, mid-infrared, milk, quick vacuum, TRANSFORM-INFRARED-SPECTROSCOPY, PARTIAL LEAST-SQUARES, COW MILK, GOAT MILK, RAPID DETECTION, BOVINE-MILK, MASS-SPECTROMETRY, RAW-MILK, QUANTIFICATION, POWDER
  • Çanakkale Onsekiz Mart Üniversitesi Adresli: Evet

Özet

Attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy-based prediction methods were previously shown to be a practical alternative to determine milk adulteration. However, milk in general contains high amount of water and infrared absorptions sourcing from water dominate the mid-infrared spectrum of the milk, preventing the other key vibrations in fingerprint region from escalating. Therefore, we aimed at evaluating the efficacy of a 30-s vacuum treatment on liquid milk aliquots prior to spectral collection and compare the results with no vacuum-applied spectra. Overall, quick vacuum treatment approach led to better-resolved peaks in the fingerprint region of the spectra compared with water-dominated spectra of milk with no vacuum application. Considering the residual predictive deviation (RPD) values obtained, vacuum treatment has significantly improved the performance of the models in prediction indicating that quick vacuum approach would be beneficial if implemented for routine determination for milk adulteration.