Document Detail


Use of X-ray micro tomography to study the microstructure of loose-packed and compacted milk powders.
MedLine Citation:
PMID:  22897706     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The use of X-rays to evaluate food microstructure has developed considerably in recent years. In this work we used X-ray micro tomography (XMT) to visualize the microstructure of loose-packed and compacted samples of spray-dried skim milk powder (SMP) and whole milk powder (WMP) and to quantify the proportion of both interstitial and occluded air voids in each sample. Visual scrutiny of the acquired XMT images showed details of the microstructure of the milk powders such as the spherical morphology of the particles, the size of the particles and internal air voids of various sizes. Within loose-packed powders, the proportion of air voids was higher (13% average) in WMP than in SMP. This was reversed in the compacted powders, in which the proportion of air voids was higher in SMP. The disparity in the proportion of air voids in both loose-packed and compacted samples of SMP and WMP was attributed to the size, shape and surface properties of the particles.
Authors:
A S Chawanji; A J Baldwin; G Brisson; E Webster
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-8-17
Journal Detail:
Title:  Journal of microscopy     Volume:  -     ISSN:  1365-2818     ISO Abbreviation:  J Microsc     Publication Date:  2012 Aug 
Date Detail:
Created Date:  2012-8-17     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0204522     Medline TA:  J Microsc     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2012 The Authors Journal of Microscopy © 2012 Royal Microscopical Society.
Affiliation:
Fonterra Research Centre, , Palmerston North, New Zealand Riddet Institute, Massey University, Palmerston North, New Zealand.
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