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Title 

Rheological properties of extracellular polysaccharide, pestan, produced by Pestalotiopsis sp.

Authors 

Gi Seok KwonS H MoonS D HongH M LeeT I MheenHee Mock OhByung Dae Yoon

Publisher 

Springer Verlag (Germany)

Issue Date 

1996

Citation 

Biotechnology Letters, vol. 18, no. 12, pp. 1465-1470

Keywords 

polysaccharidePestalotiopsis sp.

Abstract 

The fluid behaviour of Pestan produced from Pestalotiopsis sp. KCTC 8637P was as a non-Newtonian fluid. The theological behaviour of Pestan solution was examined by Power-law model, Herschel-Bulkley model and Arrhenius equation. As the result, Pestan solution was pseudoplastic behaviour with yield stress. According to increase of Pestan concentration, its flow index was decreased. Thus, low concentrations of Pestan solution were well exposed pseudoplastic property. Apparent viscosity of 0.2% Pestan solution was 268.2 cP at 14.3 sec-1 and was higher about 2.8 times than that of Xanthan gum solution. Apparent viscosity of Pestan solution was stable over a wide pH and was maximum at pH 8. Also, consistency index of Pestan solution was very stable over wide temperature than that of Xanthan gum solution.

ISSN 

0141-5492

Appears in Collections

1. Journal Articles > Journal Articles

Registered Date

2017-04-19


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