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Nhan đề: Optical properties-microstructure-texture relationships of dried apple slices: Spatially resolved diffuse reflectance spectroscopy as a novel technique for analysis and process control
Tác giả: Nguyễn, Đỗ Trọng Nghĩa
Rizzolo, Anna
Herremans, Els
Vanoli, Maristella
Cortellino, Giovanna
Erkinbaev, Chyngyz
Tsuta, Mizuki
Spinelli, Lorenzo
Contini, Davide
Torricelli, Alessandro
Verboven, Pieter
Baerdemaeker, Josse De
Nicolai, Bart
Saeys, Wouter
Từ khoá: Spatially resolved spectroscopy
Diffuse reflectance
Năm xuất bản: 2014
Tùng thư/Số báo cáo: Innovative Food Science & Emerging Technologies;21 .- p.160-168
Tóm tắt: The potential of spatially resolved diffuse reflectance spectroscopy in the 500-1000 nm range by means of a fiber-optics probe was investigated for acquiring scattering and absorption properties of air dried apple rings subjected to different pre-treatment conditions: without osmo-dehydration (TQ) and with osmo-dehydration for 1 (OSMO1) and 3 h (OSMO2). The fresh apple rings were produced from ‘Golden Delicious’ apples at harvest (H) and 5 month storage at 2 conditions: controlled atmosphere (CA) and normal atmosphere (NA). Microstructure properties of the dried apple rings were also obtained from X-ray micro-CT measurements. The TQ samples were found to have significantly higher scattering properties, thicker tissue, smaller pore sizes, were less crispy, and required higher snapping work or rupture energy than the OSMO1 and OSMO2 samples. On the other hand, no significant differences were observed between the scattering properties, microstructure, and textural quality of the OSMO1 and OSMO2 apple rings. From these results, it was concluded that there is a clear process-micro-structure-quality relation in osmo-air-dried apples which can be measured non-destructively with spatially resolved diffuse reflectance spectroscopy. Therefore, this study confirmed the potential of spatially resolved diffuse reflectance spectroscopy for non-destructive quality assessment of air-dried apple slices, which provides perspectives for drying process optimization.
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