کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10395965 | 889093 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
High yield of poly-γ-glutamic acid from Bacillus subtilis by solid-state fermentation using swine manure as the basis of a solid substrate
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: High yield of poly-γ-glutamic acid from Bacillus subtilis by solid-state fermentation using swine manure as the basis of a solid substrate High yield of poly-γ-glutamic acid from Bacillus subtilis by solid-state fermentation using swine manure as the basis of a solid substrate](/preview/png/10395965.png)
چکیده انگلیسی
Solid-state fermentations (SSF), using swine manure as the basis of a solid substrate, were carried out for high yield of poly-γ-glutamic acid (γ-PGA) by Bacillus subtilis CCTCC202048. Fermentation medium and process parameters were optimized through three orthogonal array designs. The optimal medium consisted of 62.3% (w/w, dry weight basis) swine manure, 25.0% soybean cake, 5.0% wheat bran, 5.0% glutamic acid, 2.5% citric acid and 0.2% MnSO4 · H2O. The optimal process parameters were 15.0 g medium with initial moisture content 60% and initial pH 9.0 in 250 ml flask, inoculation at mid-log phase with a 4% inoculum level and cultivation for 48 h at 37 °C. The average-PGA yield (6.0%) in triplicate under optimal conditions was obtained on the laboratory scale while it was 4.5% at compost experiment. These would lay a foundation for lessening the pollution of swine manure, increasing fertilizer efficiency and exploring a late-model organic fertilizer that retains water and nutrients.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 96, Issue 17, November 2005, Pages 1872-1879
Journal: Bioresource Technology - Volume 96, Issue 17, November 2005, Pages 1872-1879
نویسندگان
Xiong Chen, Shouwen Chen, Ming Sun, Ziniu Yu,