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Hydrolysis of liquid pineapple waste by invertase immobilized in PVA-alginate matrix

Mohd. Zain , Nor Azimah and Idris, Ani and S., Mohd. Suardi (2010) Hydrolysis of liquid pineapple waste by invertase immobilized in PVA-alginate matrix. Biochemical Engineering Journal, 50 (3). 83 - 89. ISSN 1369-703X

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Official URL: http://dx.doi.org/10.1016/j.bej.2010.02.009

Abstract

A thorough investigation of sucrose hydrolysis by invertaseimmobilized in recently developed PVA–alginate beads was performed. The developed PVA–alginate bead is distinguished by the treatment with sodium sulfate solution. The performance of invertaseimmobilized in PVA–alginatematrix beads in terms of leakage, reusability, ideal temperature and pH and kinetic parameters Km and Vmax was investigated. Results revealed that the ideal temperature and pH for the immobilizedinvertase are 50 °C and 4 respectively. The apparent Km of each bead is relatively lower than that of the free enzyme with the value of 4.7 × 10-5 mM and 2.849 × 10-5 mM for 12PVA–5BA and 12PVA–7BA, respectively. An increase in Vmax was also observed with the value of 2281.02 U mg-1 enzyme and 2281.02 U mg-1 enzyme for 12PVA–5BA and 12PVA–7BA, respectively. The reusability of the beads and its storage period were also investigated and were found to be 14 cycles and 60 days, respectively. Finally, the beads with the best performance (12PVA–5BA) were used to hydrolyze liquidpineapplewaste. The production yield of glucose was about 745% in 3 h in the hydrolysis of the liquidpineapplewaste.

Item Type:Article
Uncontrolled Keywords:PVA–alginate beads, sodium sulfate, invertase kinetic parameter, pineapplewaste
Subjects:Q Science > QD Chemistry
Divisions:Biosciences and Bioengineering (Formerly known)
ID Code:26135
Deposited By: Liza Porijo
Deposited On:27 Jun 2012 08:28
Last Modified:02 Jul 2012 07:56

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