期刊
FOOD HYDROCOLLOIDS
卷 44, 期 -, 页码 471-477出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodhyd.2014.10.011
关键词
Self-assembly; Fucoidan; Interpolymeric complex; Viscosity
资金
- National Research Foundation of Korea (NRF) - Ministry of Education [2010-0025825]
- National Research Foundation of Korea [2010-0025825] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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.
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