A novel flocculant biopolymer produced by Pestalotiopsis sp. KCTC 8637P

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Title
A novel flocculant biopolymer produced by Pestalotiopsis sp. KCTC 8637P
Author(s)
Gi Seok Kwon; S H Moon; S D Hong; H M Lee; Hee Sik KimHee Mock Oh; Byung Dae Yoon
Bibliographic Citation
Biotechnology Letters, vol. 18, no. 12, pp. 1459-1464
Publication Year
1996
Abstract
A white rot fungus was isolated from rotted leaves and identified as Pestalotiopsis sp. KCTC 8637P. It produced a flocculant biopolymer. A flocculant was partially purified from the culture broth by series of precipitations with 95% ethanol and named as Pestan. The components of Pestan were consisted of glucose:glucosamine:glucuronic acid:rhamnose with a approximately molar ratio of 100:3.5:1.6:1.3. In kaolin suspension (final concentration was 4,800 mg/l), the highest flocculating activity was attained at the biopolymer flocculant concentration of 1 mg/l. The flocculating activity was observed most highest by tile addition of cationic solutions, especially 8 mM CaCl2·2H2O or 8 mM FeCl3. The thermal stability of Pestan was sustained up to 70°C.
ISSN
0141-5492
Publisher
Springer
DOI
http://dx.doi.org/10.1007/BF00129355
Type
Article
Appears in Collections:
Synthetic Biology and Bioengineering Research Institute > Cell Factory Research Center > 1. Journal Articles
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