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Citation: Zhang Li, Yang Zhan-Lan, Xiong Yao, Peng Teng-Teng, Weng Shi-Fu, Wu Jin-Guang. Influence of H^＋ on the Aggregation Properties of Sodium Deoxycholate Aqueous Solution[J]. Acta Physico-Chimica Sinica, ;2004, 20(10): 1196-1199. doi: 10.3866/PKU.WHXB20041006 shu

Influence of H^＋ on the Aggregation Properties of Sodium Deoxycholate Aqueous Solution

1.
State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing　100871

Received Date: 10 February 2004
Available Online: 15 October 2004

The pH of bile is 6～8 in human gallbladder. The changes in pH will probably effect bile composition, which is important for gallstone formation. But little attention has been given to the influence of H＋ on bile salts aggregates in aqueous solution. Our work focused on the changes of NaDC aggregates with adding H＋ by using pH titration, FT-IR, UV-Vis and QELS (quasi-elastic light-scattering spectrometer) spectroscopies. The following conclusions are given: (1) With addition of H＋ into NaDC aqueous solution above the cmc, The aggregation of NaDC micellar changes gradually into protonated micellar aggregates, secondary or mixed aggregates, and eventually gel-like precipitates.(2) The strong H-bond with the acid salt mode induces protonated micellar aggregation to connect with primary micelles of NaDC. (3) Therefore, aqueous micellar NaDC has a buffering capacity and can increase the solubility of HDC.
- Sodium deoxycholate;pH titration;Micelle;H-bond influence
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Influence of H＋ on the Aggregation Properties of Sodium Deoxycholate Aqueous Solution

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通讯作者: 陈斌, bchen63@163.com

Influence of H^＋ on the Aggregation Properties of Sodium Deoxycholate Aqueous Solution