| Autor: |
Choi, Won‐Il, Oh, Kyeong‐Keun, Park, Ji‐Yeon, Lee, Jin‐Suk |
| Předmět: |
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| Zdroj: |
Journal of Chemical Technology & Biotechnology; Feb2014, Vol. 89 Issue 2, p290-296, 7p |
| Abstrakt: |
BACKGROUND Since extrusion has many desirable characteristics such as high shear, rapid mixing, short residence time, controllable barrel temperature, and adaptability to process modification, the technology has been applied as a viable continuous pretreatment method for empty fruit bunches ( EFB). RESULTS Optimized conditions for a continuous twin-screw-driven reactor ( CTSR) were determined to be 170°C barrel temperature, 1.6% (w/v) sodium hydroxide, 1:8 solid to liquid ratio, and 5 rpm screw rotational speed. Under these operating conditions, 56.55% of lignin and 39.18% of hemicellulose fractions were solubilized from raw EFB, which increases the glucan content in pretreated EFB from 39.25% to 53.60%. After subsequent 48-h enzymatic hydrolysis of pretreated EFB, the highest digestibility of 92.4% was achieved with an enzyme loading of 30 FPU g−1-glucan for cellulase and 70 pNPG g−1-glucan for β-glucosidase. CONCLUSION CTSR processing has great potential for increasing the efficiency of EFB pretreatment compared with batch pretreatments. © 2013 Society of Chemical Industry [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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