Unique characteristics of self-assembly of bovine serum albumin and fucoidan, an anionic sulfated polysaccharide, under various aqueous environments

Title
Unique characteristics of self-assembly of bovine serum albumin and fucoidan, an anionic sulfated polysaccharide, under various aqueous environments
Author
신원선
Keywords
Self-assembly; Fucoidan; Interpolymeric complex; Viscosity
Issue Date
2015-02
Publisher
ELSEVIER SCI LTD
Citation
FOOD HYDROCOLLOIDS, v. 44, Page. 471-477
Abstract
Interpolymeric complexes of bovine serum albumin (BSA)/fucoidan (weight ratio of 5:1) were prepared by decreasing pH in the absence and presence of NaCl. The turbidity drastically increased at pH 4.5 (pH(phi 1)) and the maximum biopolymer interactions induced at pH 4.0 (pH(opt)). The viscosity of BSA/fucoidan complexes at pH 4.0 was 1.5 times higher than that of individual protein solutions. These results reflected that both BSA and sulfated dominant fucoidans (NH3+ and -SO3-) favored the formation of BSA/fucoidan complexes with very dense and compact internal structures. On the other hand, increasing NaCl concentration (from 0 to 1 M) shifted the critical pH (pH(phi 1)) to a more acidic value, which may be explained by salt screening. Interestingly, 0.01 M of NaCl dissociated the aggregated BSA/fucoidan complexes into a soluble state at pH = 4.5. (C) 2014 Elsevier Ltd. All rights reserved.
URI
http://www.sciencedirect.com/science/article/pii/S0268005X14003725http://hdl.handle.net/20.500.11754/22436
ISSN
0268-005X; 1873-7137
DOI
10.1016/j.foodhyd.2014.10.011
Appears in Collections:
COLLEGE OF HUMAN ECOLOGY[S](생활과학대학) > FOOD & NUTRITION(식품영양학과) > Articles
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