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Indian Journal of Agricultural Research
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volume 43 issue 4 (december 2009) : 235 - 242
ACTIVITY OF CELL WALL DEGRADING ENZYMES IN HYLOCEREUS POLYRHIZUS
1Institute of Biological Science, Faculty of Science,
University of Malaya, 50 603, Kuala Lampur, Malaysia
ABSTRACT
Changes in the activities of cell wall degrading enzymes such as
pectinmethylesterase (PME), polygalacturonase (PG), pectate lyase (PL) and cellulase
were studied in red fleshed dragon fruit, Hylocereus polyrhizus harvested at three
different harvest maturities. PME activity increased in fruit harvested earlier as
opposed to fruit harvested at ripe stage while PG activity increased in all three different
stages. Activity of pectate lyase was almost invariable in all three different stages. As
for younger fruit, the cellulase activity increased progressively while activity was
found to be within the same range in fruit harvested at ripe stage.
pectinmethylesterase (PME), polygalacturonase (PG), pectate lyase (PL) and cellulase
were studied in red fleshed dragon fruit, Hylocereus polyrhizus harvested at three
different harvest maturities. PME activity increased in fruit harvested earlier as
opposed to fruit harvested at ripe stage while PG activity increased in all three different
stages. Activity of pectate lyase was almost invariable in all three different stages. As
for younger fruit, the cellulase activity increased progressively while activity was
found to be within the same range in fruit harvested at ripe stage.
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Published In
Indian Journal of Agricultural Research