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Short Communication | OPEN ACCESS

Effect of acid treatment on the consolidation and plasto-elasticity of tapioca powder

Florence E Eichie , Roland S Okor

Department of Pharmaceutics and Pharmaceutical Technology, University of Benin, P.M.B. 1154, Benin City, Nigeria.;

For correspondence:-  Florence Eichie   Email: eichie@uniben.edu

Published: 24 June 2002

Citation: Eichie FE, Okor RS. Effect of acid treatment on the consolidation and plasto-elasticity of tapioca powder. Trop J Pharm Res 2002; 1(1):45-49 doi: 10.4314/tjpr.v1i1.7

© 2002 The authors.
This is an Open Access article that uses a funding model which does not charge readers or their institutions for access and distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0) and the Budapest Open Access Initiative (http://www.budapestopenaccessinitiative.org/read), which permit unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited..

Abstract

Purpose:   The effects of treating the tapioca (the fibrous residue obtained after up to 90% of the  proportion of  starch has  been  removed  from the peeled and  rasped  roots of  cassava tubers powder with dilute solutions of hydrochloric acid) in order to find an approach for rendering an otherwise poorly compressible material to a directly compressible powder.
Method:  The parameters  measured  were  the degree of  consolidation of the powder  after compression (i.e. the packing fraction of resulting tablets), the plasto-elasticity of the powders as  reflected by  the brittle fracture index  (BFI)  of the tablets  made from the powders  and the viscosities of mucilages derived from the powders.  The influence of time of exposure and the concentration of acid used in the treatment were studied.
Results:  The  degree of  consolidation of the powder  increased  slightly  with  increase  in duration of exposure to acid (24 – 72 h) but drastically with increase in the acid concentration from 0.1 to 0.4  mol.  L –1 . On  the other  hand, the plasto-elasticity  of the powders  as  measured by  the  BFI values  and  the  viscosities  of  mucilages  derived  from the powders  decreased  slightly  with duration of  exposure but  drastically  with  increase  in acid  concentration.  A  change  in acid  concentration  was therefore  the  more determinant factor  with  regards  to  the  consolidation and plasto-elasticity properties  of the powders.  The decrease  in  the  viscosities  of the  mucilages  following acid
treatment of the powders was indicative of a breakdown of polymeric structure in the powder
Conclusion:  Acid  treatment  of tapioca powder  imparted plasticity  in  tapioca powder  which became compressible.

Keywords: Plasto-elasticity, brittle fracture index, tapioca powder.

Impact Factor
Thompson Reuters (ISI): 0.6 (2023)
H-5 index (Google Scholar): 49 (2023)

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