Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 1075-1084 |
| Journal | Journal of Raman spectroscopy |
| Volume | 48 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 2017 |
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Raman hyperspectral imaging and analysis of fat spreads. / van Dalen, G.; van Velzen, E.J.J.; Heussen, P.C.M.; Sovago, M.; van Malssen, K.F.; van Duynhoven, J.P.M.
In: Journal of Raman spectroscopy, Vol. 48, No. 8, 2017, p. 1075-1084.Research output: Contribution to journal › Article › Academic › peer-review
TY - JOUR
T1 - Raman hyperspectral imaging and analysis of fat spreads
AU - van Dalen, G.
AU - van Velzen, E.J.J.
AU - Heussen, P.C.M.
AU - Sovago, M.
AU - van Malssen, K.F.
AU - van Duynhoven, J.P.M.
PY - 2017
Y1 - 2017
N2 - The microstructure of fat spreads is of fundamental importance to their sensorial properties such as texture, mouthfeel and spreadability. Fat spreads are water in oil emulsions,with a continuous phase supported by a fat crystal network. Confocal Raman microscopy offers the possibility for the spatialmapping of themicrostructure of fat spreads: It can distinguish the solid and liquid phases of the lipids and the emulsifiers present at the water–oil interface. A constraint multivariate curve resolution with an alternating least squares approach using a fixed set of pure component spectra is a suitable method to extract the spatial distribution information of each individual component present in the fat spread. A new normalization method provides semi-quantitative concentration maps, allowing good microstructural comparison. The technique was able to determine the spatial distribution of sunflower oil, water, emulsifier and solid fat in various investigated spreads. This method can be applied to a wide range of different food emulsions such as butter, margarine, mayonnaise and salad dressings. Copyright © 2017 John Wiley & Sons, Ltd.
AB - The microstructure of fat spreads is of fundamental importance to their sensorial properties such as texture, mouthfeel and spreadability. Fat spreads are water in oil emulsions,with a continuous phase supported by a fat crystal network. Confocal Raman microscopy offers the possibility for the spatialmapping of themicrostructure of fat spreads: It can distinguish the solid and liquid phases of the lipids and the emulsifiers present at the water–oil interface. A constraint multivariate curve resolution with an alternating least squares approach using a fixed set of pure component spectra is a suitable method to extract the spatial distribution information of each individual component present in the fat spread. A new normalization method provides semi-quantitative concentration maps, allowing good microstructural comparison. The technique was able to determine the spatial distribution of sunflower oil, water, emulsifier and solid fat in various investigated spreads. This method can be applied to a wide range of different food emulsions such as butter, margarine, mayonnaise and salad dressings. Copyright © 2017 John Wiley & Sons, Ltd.
U2 - 10.1002/jrs.5171
DO - 10.1002/jrs.5171
M3 - Article
VL - 48
SP - 1075
EP - 1084
JO - Journal of Raman spectroscopy
JF - Journal of Raman spectroscopy
SN - 0377-0486
IS - 8
ER -