Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 118-123 |
| Journal | Vibrational Spectroscopy |
| Volume | 60 |
| DOIs | |
| Publication status | Published - 2012 |
Fingerprint
Keywords
- ir microspectroscopy
- array detector
- microscopy
- compaction
- samples
Cite this
}
The use of ATR-FTIR imaging to study coated oil capsules. / Heussen, P.C.M.; van Dalen, G.; Nootenboom, P.; Smit, I.; van Duynhoven, J.P.M.
In: Vibrational Spectroscopy, Vol. 60, 2012, p. 118-123.Research output: Contribution to journal › Article › Academic › peer-review
TY - JOUR
T1 - The use of ATR-FTIR imaging to study coated oil capsules
AU - Heussen, P.C.M.
AU - van Dalen, G.
AU - Nootenboom, P.
AU - Smit, I.
AU - van Duynhoven, J.P.M.
PY - 2012
Y1 - 2012
N2 - Fourier transform infrared (FTIR) spectroscopic imaging using a large Internal Reflection Element (IRE), also called Attenuated Total Reflection (ATR) crystal, can be used for the identification and localisation of chemical compounds in solid food products. In this study ATR-FTIR imaging, by means of a large area crystal with a contact diameter of 600 µm with a linear array detector, was used to elucidate the microstructure of the coating of a sophisticated multi-layered oil capsule with active ingredients (sodium ascorbate, sucrose, gelatine, gum, isoflavone). ATR-FTIR imaging with the aid of principal component analysis (PCA) showed the spatial location of the individual ingredients within the layers and that these ingredients are not uniformly distributed within the layers. By ATR-FTIR imaging it was determined that the layer thickness of the soft central coating layer containing lycopene, sodium ascorbate, sucrose and air is about ~156 µm, the 1st sucrose layer ~180 µm and the gelatine/gum ~28 µm. The latter was confirmed by X-ray microtomography (µCT). The other layers could not be identified by µCT.
AB - Fourier transform infrared (FTIR) spectroscopic imaging using a large Internal Reflection Element (IRE), also called Attenuated Total Reflection (ATR) crystal, can be used for the identification and localisation of chemical compounds in solid food products. In this study ATR-FTIR imaging, by means of a large area crystal with a contact diameter of 600 µm with a linear array detector, was used to elucidate the microstructure of the coating of a sophisticated multi-layered oil capsule with active ingredients (sodium ascorbate, sucrose, gelatine, gum, isoflavone). ATR-FTIR imaging with the aid of principal component analysis (PCA) showed the spatial location of the individual ingredients within the layers and that these ingredients are not uniformly distributed within the layers. By ATR-FTIR imaging it was determined that the layer thickness of the soft central coating layer containing lycopene, sodium ascorbate, sucrose and air is about ~156 µm, the 1st sucrose layer ~180 µm and the gelatine/gum ~28 µm. The latter was confirmed by X-ray microtomography (µCT). The other layers could not be identified by µCT.
KW - ir microspectroscopy
KW - array detector
KW - microscopy
KW - compaction
KW - samples
U2 - 10.1016/j.vibspec.2012.01.012
DO - 10.1016/j.vibspec.2012.01.012
M3 - Article
VL - 60
SP - 118
EP - 123
JO - Vibrational Spectroscopy
JF - Vibrational Spectroscopy
SN - 0924-2031
ER -