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Polyphenoloxidase from Starfruit (Averrhoa carambola, L.) I


Tengku Adnan, Tengku Adnin and Augustin, M. A. and Mohd Ghazali, Hasanah (1986) Polyphenoloxidase from Starfruit (Averrhoa carambola, L.) I. Pertanika, 9 (2). pp. 219-224.


Polyphenoloxidase (PPO) was z50lated from starfruit (Averrhoa carambola, L.) and purified by acetone precipitation and dialysis. The optimum pH for the aCl}tone purified PPO catalysed oxidation of catechol was found to be pH 7.2 Heat 'inactivation studies showed that the enzyme was heat-labile. Haif-Hvesfor PPO 'inactiivation at 70°C and 75°C were found to be 4.6 min and 3.1 min respectively. The Michaeline constant (K j and V for catechol with PPO was O. 061M and 20 U ml-1 respectively.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Food Science and Technology
Keywords: Polyphenoloxidase, starfruit, catechol
Depositing User: Nur Izyan Mohd Zaki
Date Deposited: 13 Nov 2009 07:47
Last Modified: 27 May 2013 07:01
URI: http://psasir.upm.edu.my/id/eprint/2470
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