Production and Purification of Xylanase From Indonesian Isolate Bacillus sp. AQ-1 Grown on Bunch Palm Oil
| Main Authors: | Rahayu, Puji, Setyahadi, Siswa, Harmita |
|---|---|
| Terbitan: |
IPB (Bogor Agricultural University)
, 2011
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| Online Access: |
http://repository.ipb.ac.id/handle/123456789/42942 |
Daftar Isi:
- Xylanase (endoxylanase, EC 3.2.1.8) is a commercial enzyme that has been applied in the industrial production of fuel, food, textiles and paper. Xylanase was isolated from the culture supernatant of Bacillus sp. AQ-1 grown on Nakamura medium containing 0.5% powder bunch palm oil. The optimum pH and temperature of xylanase activity were pH 7.0 and 60 °C, respectively. The enzyme was purified by anion exchange chromatography using DEAE-Sepharose-Fast-Flow column and gel filtration chromatography using Sephacryl S-300 column. The results showed that purification of xylanase produced two forms of xylanase, which were identified as xylanase A and xylanase B. Xylanase A can be separated from xylanase B by ultrafiltration using a 30 kDa polyethersulfone membrane. The molecular weight of xylanase A and B were 15.7 and 57.7 kDa, respectively.