Paper published in a book (Scientific congresses and symposiums)
X-ray microtomography of macadamia nuts
Srichamnong, W.; Plougonven, Erwan; Léonard, Angélique et al.
2011In Récents Progrès en Génie des Procédés
Peer reviewed
 

Files


Full Text
2011 - SFGP - X-ray microtomography of macadamia nuts.pdf
Author preprint (761.08 kB)
Download

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
macadamia nut; shell density; kernel volume ratio; X-ray microtomography
Abstract :
[en] Several varieties of macadamia nuts are studied using X-ray microtomography, in order to determine a link between structural properties and storage stability. Fresh nuts-in-shell (NIS) of the predominantly grown hybrid varieties (A38, 816, 842, Daddow and 246) are scanned, the 3D tomographic reconstructions are then segmented, i.e. pixels labelled either as shell, void (inner and outer), and kernel. The automatic segmentation process consists in two steps: positioning of markers that identify each of these regions (by labelling pixels that are certain to belong to the region), and delimitation of these regions. The first step is performed with typical image processing operators (thresholding, connected component analysis, distance transform), while the second step uses the watershed algorithm. Once all regions are identified, pixel counting provides measures of volumes for each region, which, coupled with weighing, gives densities. We show that from physical quantities such as kernel volume percent or shell density, two main classes of nuts can be derived. A relationship between these observations and the behaviour of the nut varieties considered by this study during postharvest operations is discussed and further research work is proposed.
Disciplines :
Physical, chemical, mathematical & earth Sciences: Multidisciplinary, general & others
Author, co-author :
Srichamnong, W.
Plougonven, Erwan  ;  Université de Liège - ULiège > Department of Chemical Engineering > PEPs (Product, Environment, Processes)
Léonard, Angélique  ;  Université de Liège - ULiège > Department of Chemical Engineering > PEPs (Product, Environment, Processes)
Srzednicki, George
Language :
English
Title :
X-ray microtomography of macadamia nuts
Publication date :
2011
Event name :
13ème congrès de la Société Française de Génie des Procédés
Event organizer :
Ecole Nationale Supérieure de Chimie de Lille (ENSCL)
Ecole Nationale Supérieure des Arts et Industries Textiles (ENSAIT)
Ecole Centrale de Lille (EC Lille)
Event place :
Lille, France
Event date :
from 29-11-2011 to 1-12-2011
Audience :
International
Main work title :
Récents Progrès en Génie des Procédés
ISBN/EAN :
9782910239756
Peer reviewed :
Peer reviewed
Available on ORBi :
since 28 August 2019

Statistics


Number of views
43 (0 by ULiège)
Number of downloads
68 (0 by ULiège)

Bibliography


Similar publications



Contact ORBi