Purification and studying some characters of laccase enzyme from irradiated pleurotus ostreatus ATCC 56270
Joint Authors
al-Hajar, Ula E. A.
Atiyyah, K. S.
al-Aziz, A. F. A.
Marzuq, E. A.
Mansur, Huda A.
Source
Arab Journal of Nuclear Sciences and Applications
Issue
Vol. 52, Issue 2 (30 Apr. 2019), pp.94-102, 9 p.
Publisher
The Egyptian Society of Nuclear Science and Applications
Publication Date
2019-04-30
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
Purification of laccase enzyme by anion exchange chromatography using DEAE sepharose and sephacryl HR are successful in purifying laccase.
SDS- PAGE is the determined of laccase molecular weight which is 75KDa.
The optimum pH for activity was 5 and for stability was 6.5-7.5.
The optimum temperature for activity was 35oC and stability of the enzyme was stable up to 55oC, the enzyme retained 100% of its activity after 20 minutes incubation, 85% of its activity after 1h incubation at the same temperature.
The activation energy (Eact) of the purified laccase between 20oC and 45oC at its optimum pH was 16.3 k Jmol-1 .
The apparent Km value of the enzyme for ABTS was estimated to be 1.4 mM under standard assay conditions, kcat value of ABTS was calculated to be 3450 min-1 and Vmax is the maximum initial rate in the Michaelis-Menten equation (1.2µmol L-1 min-1 ).
Microencapsulation of laccase exhibited that free laccase (35U/ml) has higher activity than encapsulated laccase (24.3 U/ml).
American Psychological Association (APA)
al-Hajar, Ula E. A.& Atiyyah, K. S.& al-Aziz, A. F. A.& Marzuq, E. A.& Mansur, Huda A.. 2019. Purification and studying some characters of laccase enzyme from irradiated pleurotus ostreatus ATCC 56270. Arab Journal of Nuclear Sciences and Applications،Vol. 52, no. 2, pp.94-102.
https://search.emarefa.net/detail/BIM-892203
Modern Language Association (MLA)
al-Hajar, Ula E. A.…[et al.]. Purification and studying some characters of laccase enzyme from irradiated pleurotus ostreatus ATCC 56270. Arab Journal of Nuclear Sciences and Applications Vol. 52, no. 2 (Apr. 2019), pp.94-102.
https://search.emarefa.net/detail/BIM-892203
American Medical Association (AMA)
al-Hajar, Ula E. A.& Atiyyah, K. S.& al-Aziz, A. F. A.& Marzuq, E. A.& Mansur, Huda A.. Purification and studying some characters of laccase enzyme from irradiated pleurotus ostreatus ATCC 56270. Arab Journal of Nuclear Sciences and Applications. 2019. Vol. 52, no. 2, pp.94-102.
https://search.emarefa.net/detail/BIM-892203
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 101-102
Record ID
BIM-892203