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Starch pastes thinning during high-pressure homogenization

Authors :
Che, Li-Ming
Wang, Li-Jun
Li, Dong
Bhandari, Bhesh
Özkan, Necati
Chen, Xiao Dong
Mao, Zhi-Huai
Source :
Carbohydrate Polymers. Jan2009, Vol. 75 Issue 1, p32-38. 7p.
Publication Year :
2009

Abstract

Abstract: High-pressure homogenization induced thinning of potato and cassava starch paste was investigated. The starch slurries at a concentration of 2.0wt.% were heated at 90°C for 1h and then rapidly cooled in tap water. The cooled starch pastes were homogenized at various pressures ranging from 0 to 100MPa using a lab-scale high-pressure homogenizer. The influence of homogenizing pressure on the temperature, apparent viscosity, electrical conductivity, and percent light transmittance of homogenized starch pastes were determined. Temperatures of homogenized starch pastes increased linearly with the increase of the applied pressure, and the rate was 0.177°C/MPa and 0.186°C/MPa for potato and cassava starch pastes, respectively. After high-pressure homogenization, the apparent viscosities of the starch pastes decreased, while the percent light transmittances of them increased. However, the electrical conductivities of starch pastes were not affected by homogenization. [Copyright &y& Elsevier]

Details

Language :
English
ISSN :
01448617
Volume :
75
Issue :
1
Database :
Academic Search Index
Journal :
Carbohydrate Polymers
Publication Type :
Academic Journal
Accession number :
34439812
Full Text :
https://doi.org/10.1016/j.carbpol.2008.06.004