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Optimization of Cellulase Enzyme Production Conditions from Bacillus cereus 21 Using Submerged Fermentation

أمثلة ظروف إنتاج أنزيم السيلولاز من بكتريا Bacillus cereus 21 باستخدام طريقة التخمير المغمور

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 Publication date 2013
  fields Food Sciences
and research's language is العربية
 Created by Shamra Editor




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The conditions for producing cellulase enzyme were optimized using corn husks as substrate in submerged fermentation. The effects of five parameters (incubation temperature, pH, substrate concentration, inoculum volume, fermentation time) on the strain growth and enzyme production were studied. For this purpose the statistical program Minitab and the statistical design Response Surface Methodology (RSM) were applied.


Artificial intelligence review:
Research summary
تناولت الدراسة أمثلة ظروف إنتاج أنزيم السيلولاز من بكتريا Bacillus cereus 21 باستخدام طريقة التخمير المغمور، مع استخدام قشور الذرة كركيزة. تم دراسة تأثير خمسة متغيرات وهي درجة حرارة الحضن، ودرجة الحموضة، ومدة الحضن، وحجم اللقاحة، وتركيز الركيزة على نمو السلالة وإنتاج الأنزيم. باستخدام برنامج Minitab والتصميم الإحصائي (RSM)، تم التوصل إلى أن أفضل الظروف لإنتاج الأنزيم هي درجة حرارة الحضن 25 درجة مئوية، ودرجة الحموضة 9.5، ومدة الحضن 18 ساعة، وحجم اللقاحة 1%، وتركيز الركيزة 0.5%. بلغت الفعالية الأنزيمية الكلية 0.6 وحدة دولية/مل، وتم تقديرها من خلال كمية الغلوكوز المتحرر الناتج عن الأنزيمات المحللة للسيلولوز.
Critical review
دراسة نقدية: على الرغم من أن الدراسة قدمت نتائج قيمة حول أمثلة ظروف إنتاج أنزيم السيلولاز من بكتريا Bacillus cereus 21، إلا أنها لم تتناول بعض الجوانب الهامة مثل التكلفة الاقتصادية للإنتاج على نطاق واسع، وتأثير المتغيرات البيئية الأخرى على فعالية الأنزيم. كما أن الدراسة اعتمدت على برنامج إحصائي واحد فقط، مما قد يحد من دقة النتائج. كان من الممكن تعزيز الدراسة من خلال مقارنة النتائج مع دراسات أخرى واستخدام برامج إحصائية متعددة.
Questions related to the research
  1. ما هي الركيزة المستخدمة في الدراسة لإنتاج أنزيم السيلولاز؟

    استخدمت الدراسة قشور الذرة كركيزة لإنتاج أنزيم السيلولاز.

  2. ما هي أفضل الظروف لإنتاج أنزيم السيلولاز وفقًا للدراسة؟

    أفضل الظروف لإنتاج أنزيم السيلولاز هي درجة حرارة الحضن 25 درجة مئوية، ودرجة الحموضة 9.5، ومدة الحضن 18 ساعة، وحجم اللقاحة 1%، وتركيز الركيزة 0.5%.

  3. ما هو البرنامج الإحصائي المستخدم في الدراسة لتحليل البيانات؟

    استخدمت الدراسة برنامج Minitab لتحليل البيانات.

  4. ما هي الفعالية الأنزيمية الكلية التي تم الحصول عليها في الدراسة؟

    بلغت الفعالية الأنزيمية الكلية 0.6 وحدة دولية/مل.


References used
Abou-Taleb, K. A., W. A. Mashhoor, A. Sohair, M.S. Sharaf, and H. M. Hoda. 2009. Nutritional and Environmental Factors Affecting Cellulase Production by Two Strains of Cellulolytic Bacilli, Australian Journal of Basic and Applied Sciences 3(3): 2429-2436
Bailey, M. J. and K. M. H. Nevalainen. 1981. Induction, isolation and testing of stable Trichoderma reesei mutants, Enzyme Microb. Technology 3: 153-157
Buchert J., Suurnakki A., Tenkanen M. and Viikari L. 1996. Enzymatic characterization of pulps, in enzymes for pulp and paper processing, Edited by T. W. Jeffries, L Viikari, ACS Symp Ser 655. 38-43
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