کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7080109 | 1459995 | 2013 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The influence of sorbitol on the production of cellulases and xylanases in an airlift bioreactor
ترجمه فارسی عنوان
تأثیر سوربیتول بر تولید سلولازها و زایلانازها در یک بیوراکتور هوایی
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تکنولوژی و شیمی فرآیندی
چکیده انگلیسی
The production of cellulases and xylanases by Penicillium echinulatum in an airlift bioreactor was evaluated. In batch production, we tested media with isolated or associated cellulose and sorbitol. In fed-batch production, we tested cellulose addition at two different times, 30 h and 48 h. Higher liquid circulation velocities in the downcomer were observed in sorbitol 10 g Lâ1 medium. In batch production, higher FPA (filter paper activity) and endoglucanase activities were obtained with cellulose (7.5 g Lâ1) and sorbitol (2.5 g Lâ1), 1.0 U mLâ1 (120 h) and 6.4 U mLâ1 (100 h), respectively. For xylanases, the best production condition was cellulose 10 g Lâ1, which achieved 5.5 U mLâ1 in 64 h. The fed-batch process was favorable for obtaining xylanases, but not for FPA and endoglucanases, suggesting that in the case of cellulases, the inducer must be added early in the process.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 148, November 2013, Pages 86-90
Journal: Bioresource Technology - Volume 148, November 2013, Pages 86-90
نویسندگان
Carla Eliana Todero Ritter, Roselei Claudete Fontana, Marli Camassola, MaurÃcio Moura da Silveira, Aldo José Pinheiro Dillon,