Determination of oil and moisture distribution in fried potatoes using magnetic resonance imaging

ISIK B., ŞAHİN S., Oztop M. H.

JOURNAL OF FOOD PROCESS ENGINEERING, vol.41, no.6, 2018 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 41 Issue: 6
  • Publication Date: 2018
  • Doi Number: 10.1111/jfpe.12814
  • Journal Name: JOURNAL OF FOOD PROCESS ENGINEERING
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Middle East Technical University Affiliated: Yes

Abstract

The objective of this study was to examine oil and moisture distribution in fried potatoes using Magnetic Resonance Imaging (MRI) as nondestructive technique and to establish a correlation between moisture content and oil content of fried potatoes with MRI results. In addition, it was aimed to evaluate the effects of frying time, predrying and precoating by hydroxyprophylmethylcellulose (HPMC) on moisture loss and oil uptake of the samples. Coating with HPMC was the best pretreatment to reduce oil uptake. Spin echo (SE) and multislice-multi-echo (MSME) pulse sequences were used to obtain longitudinal relaxation time (T-1) weighted and water suppression images and also spin-spin relaxation time (T-2) maps of the samples. Results confirmed that by using different MR imaging sequences, prediction of oil and moisture contents (r>0.70) and exploring the distribution of oil and moisture within the fried pototaes was possible.