کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
3794 189 2011 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Extractive fermentation of l-(+)-lactic acid by Pediococcus pentosaceus using electrodeionization (EDI) technique
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بیو مهندسی (مهندسی زیستی)
پیش نمایش صفحه اول مقاله
Extractive fermentation of l-(+)-lactic acid by Pediococcus pentosaceus using electrodeionization (EDI) technique
چکیده انگلیسی

In this work, extractive fermentation of l-(+)-lactic acid (lactate) was carried out using an electrodeionization (EDI) technique. Pediococcus pentosaceus was used as the biocatalyst because of its homo-fermentative characteristic. The effect of initial lactate concentrations on microbial growth was initially investigated. A mathematical simulation of the product inhibition was successfully illustrated. It was found that the critical lactate concentration was approximately 80 g/L. Various operating conditions were investigated to assess the EDI performance. The system was subsequently applied for in situ removal of lactate from the fermentation broth. The specific deactivation constant (kd) was substantially reduced from 0.026 h−1 to 0.0054 h−1 resulting in a much improved half life of the biocatalyst. The highest lactate concentration in the receiving solution was 185 g/L.


► EDI technique promotes lactic acid production yield.
► The in situ lactate removal results in reduction of deactivaton constant.
► This membrane bioreactor system significantly reduced impurities.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biochemical Engineering Journal - Volume 54, Issue 3, 15 May 2011, Pages 192–199
نویسندگان
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