کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1986947 1540258 2013 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Optimization of recombinant hexaoligochitin-producing chitinase production with response surface methodology
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی زیست شیمی
پیش نمایش صفحه اول مقاله
Optimization of recombinant hexaoligochitin-producing chitinase production with response surface methodology
چکیده انگلیسی


• The optimal conditions for mass production of the chitinase ASCHI61 were studied.
• The recombinant ASCHI61 expression in E. coli was determined by experimental design.
• The interactive effect of induction temperature and time was the most significant.
• The maximum ASCHI61 activity was 32,092 U at 23.9 °C for an induction time of 115 min.

Hexaoligochitin produced by chitinase, ASCHI61, from Aeromonas schubertii was recently expressed. In this work, the optimal conditions for the mass production of ASCHI61 were investigated. The efficiency of recombinant protein expression in Escherichia coli was determined by various parameters, including the pH of the culture medium, induction temperature, shaking speed, inducer concentration, and induction period. The optimization experiments could be simplified through a statistical design of experiments (response surface methodology). From the fractional factorial design, the interactive effect of induction temperature and time was the most significant. The total activity of the enzyme was 32,092 U at 23.9 °C with 115 min of induction. Under those conditions, the total activity of the recombinant protein was 30,650 U in the fermentation experiments, with an error of only 4.8%. The total activity of ASCHI61 increased 1.54-fold under the optimal conditions. Based on the results, ASCHI61 can be expressed more for hexaoligochitin production.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Biological Macromolecules - Volume 62, November 2013, Pages 518–522
نویسندگان
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