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Effect of mixing on enzymatic liquefaction of sago starch

The effect of mixing as a function of agitation speed and impeller diameter on the rate and degree of enzymatic liquefaction of sago starch was carried out using a stirred tank reactor with a single Rushton turbine impeller. The performance of the reactor as a mixing device was first examined using...

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Main Authors: Ariff, Arbakariya, Ali, Asbi, M. N., Azudin, Kennedy, J. F.
Format: Article
Language:English
English
Published: Elsevier Science 1997
Online Access:http://psasir.upm.edu.my/id/eprint/51113/1/51113.pdf
http://psasir.upm.edu.my/id/eprint/51113/7/1-s2.0-S0144861797000489-main.pdf
http://psasir.upm.edu.my/id/eprint/51113/
http://www.sciencedirect.com/science/article/pii/S0144861797000489?via%3Dihub
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spelling my.upm.eprints.511132024-08-07T07:37:26Z http://psasir.upm.edu.my/id/eprint/51113/ Effect of mixing on enzymatic liquefaction of sago starch Ariff, Arbakariya Ali, Asbi M. N., Azudin Kennedy, J. F. The effect of mixing as a function of agitation speed and impeller diameter on the rate and degree of enzymatic liquefaction of sago starch was carried out using a stirred tank reactor with a single Rushton turbine impeller. The performance of the reactor as a mixing device was first examined using different concentrations of carboxymethylcellulose, which exhibited pseudoplastic behaviour similar to that of the solution during the sago starch liquefaction process. A correlation between mixing time (tm) and Reynolds number (Re) in the form of tm = bRec is presented; the constants for the correlation depended on viscosity of the fluid. For the two ratios of impeller diameter (Di) to tank diameter (Dt) used, 0.407 and 0.542, agitation speed gave significant influence on both overall rate and degree of liquefaction of sago starch. Mixing time (tm) was independent of impeller diameter used, and correlated well with the overall rate of liquefaction (P) (calculated as the reducing sugar produced divided by time of liquefaction) and expressed as P = 1.95tm-0.362. Elsevier Science 1997 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/51113/1/51113.pdf text en http://psasir.upm.edu.my/id/eprint/51113/7/1-s2.0-S0144861797000489-main.pdf Ariff, Arbakariya and Ali, Asbi and M. N., Azudin and Kennedy, J. F. (1997) Effect of mixing on enzymatic liquefaction of sago starch. Carbohydrate Polymers, 33 (2-3). pp. 101-108. ISSN 0144-8617 http://www.sciencedirect.com/science/article/pii/S0144861797000489?via%3Dihub 10.1016/S0144-8617(97)00048-9
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
English
description The effect of mixing as a function of agitation speed and impeller diameter on the rate and degree of enzymatic liquefaction of sago starch was carried out using a stirred tank reactor with a single Rushton turbine impeller. The performance of the reactor as a mixing device was first examined using different concentrations of carboxymethylcellulose, which exhibited pseudoplastic behaviour similar to that of the solution during the sago starch liquefaction process. A correlation between mixing time (tm) and Reynolds number (Re) in the form of tm = bRec is presented; the constants for the correlation depended on viscosity of the fluid. For the two ratios of impeller diameter (Di) to tank diameter (Dt) used, 0.407 and 0.542, agitation speed gave significant influence on both overall rate and degree of liquefaction of sago starch. Mixing time (tm) was independent of impeller diameter used, and correlated well with the overall rate of liquefaction (P) (calculated as the reducing sugar produced divided by time of liquefaction) and expressed as P = 1.95tm-0.362.
format Article
author Ariff, Arbakariya
Ali, Asbi
M. N., Azudin
Kennedy, J. F.
spellingShingle Ariff, Arbakariya
Ali, Asbi
M. N., Azudin
Kennedy, J. F.
Effect of mixing on enzymatic liquefaction of sago starch
author_facet Ariff, Arbakariya
Ali, Asbi
M. N., Azudin
Kennedy, J. F.
author_sort Ariff, Arbakariya
title Effect of mixing on enzymatic liquefaction of sago starch
title_short Effect of mixing on enzymatic liquefaction of sago starch
title_full Effect of mixing on enzymatic liquefaction of sago starch
title_fullStr Effect of mixing on enzymatic liquefaction of sago starch
title_full_unstemmed Effect of mixing on enzymatic liquefaction of sago starch
title_sort effect of mixing on enzymatic liquefaction of sago starch
publisher Elsevier Science
publishDate 1997
url http://psasir.upm.edu.my/id/eprint/51113/1/51113.pdf
http://psasir.upm.edu.my/id/eprint/51113/7/1-s2.0-S0144861797000489-main.pdf
http://psasir.upm.edu.my/id/eprint/51113/
http://www.sciencedirect.com/science/article/pii/S0144861797000489?via%3Dihub
_version_ 1807051113584656384
score 13.211869

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