Article (Scientific journals)
Bulk and Surface Wettability Characteristics of Probiotic Powders in Their Compressed Disc and Packed-Bed Column Forms
Ali, Mohamed; Razafindralambo, Hary; Conti, Giuseppina et al.
2020In ACS Omega, 5, p. 22348-22355
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Keywords :
Wettability; Probiotic; Powder particles; Equilibrium contact angle; Darcy's law; Capillary rise techniques; Permeability; Porosity; Size distribution; Shape distribution; Physical chemistry; Solid surface properties
Abstract :
[en] Most probiotic-based products are available in powder particles under different solid-state forms. Such diversity can affect the probiotic stability, viability, and performance at different stages of processing, storage, and use. Here, we apply complementary physical chemistry techniques to characterize the bulk and surface properties of probiotic powder particles under different forms and report quantitative results of a highly concentrated multistrain reference product. The solid particle morphology, size/shape distribution, and the powder surface wettability in the compressed disc and orous packed bed forms are successively measured by sessile drop and capillary rise techniques. A omplete wettability of the disc surface is observed through equilibrium contact angle measurements for various solvents, whereas the associated capillary rise data exhibit two regimes: power law regime for the first few moments followed by a second regime, which can be described using Darcy’s law. The use of this modeling approach shows the possibility of assessing the particle-packed bed permeability and porosity. These results open a new route of the structure−activity relationship study on the impact of probiotic solid particles on their functionalities and performance in promoting health benefits, related particularly to the human and animal gut permeability. This statement also strengthens the idea of using the compressed disc technique for easily performing probiotic wettability measurements.
Disciplines :
Physical, chemical, mathematical & earth Sciences: Multidisciplinary, general & others
Author, co-author :
Ali, Mohamed;  Université de Mons - UMONS > Département de Physique > Laboratoire de physique des surfaces et interfaces
Razafindralambo, Hary  ;  Université de Liège - ULiège > Département GxABT > SMARTECH
Conti, Giuseppina;  Université de Mons - UMONS > Département de Physique > Laboratoire de Physique des Surfaces et Interfaces
De Coninck, Joël;  Université de Mons - UMONS > Département de Physique > Laboratoire de Physique des Surfaces et Interfaces
Language :
English
Title :
Bulk and Surface Wettability Characteristics of Probiotic Powders in Their Compressed Disc and Packed-Bed Column Forms
Alternative titles :
[en] Belgique
Publication date :
28 August 2020
Journal title :
ACS Omega
eISSN :
2470-1343
Publisher :
American Chemical Society, Washington DC, United States - Washington
Volume :
5
Pages :
22348-22355
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
Région wallonne [BE]
Available on ORBi :
since 12 September 2020

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