Zulfigar,, Siti Balqis
(2012)
Purification And Characterization Of Protease From Artocarpus Integer Leaf.
Masters thesis, Universiti Sains Malaysia.
Abstract
The presence of a protease in Artocarpus integer leaves, which can be used as a meat tenderiser, was verified by the presence of a band at 69 kDa, using caseinolytic zymography and sodium dodecyl sulphate polyacrylamide gel electrophoresis (SDS PAGE). Purification by temperature-phase partitioning with 6 % (v/v) Triton X-114, 44 % (w/v) ammonium sulphate precipitation and gel filtration chromatography yielded a preparation with a 12-fold increase in enzyme purity and a final specific activity of 76.67 U/mg. The purified protease was maximally active at 40ºC and at pH 10.0.
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