Influence of Bacillus subtilis on the growth of calcium oxalate

被引：19

作者：

Chen, Long

Xie, Anjian

Jia, Rong

Shen, Yuhua ^{[1
]}

Tang, Wenzhong

Li, Chuanhao

机构：

[1] Anhui Univ, Sch Chem & Chem Engn, Hefei 230039, Peoples R China

[2] Key Lab Environm Friendly Polymer Mat Anhui Prov, Hefei 230039, Peoples R China

[3] Anhui Univ, Sch Life Sci, Hefei 230039, Peoples R China

来源：

CRYSTAL RESEARCH AND TECHNOLOGY | 2007年 / 42卷 / 09期

关键词：

calcium oxalate; Bacillus sublilis; urinary stone; functional material;

D O I：

10.1002/crat.200710933

中图分类号：

O7 [晶体学];

学科分类号：

0702 [物理学]; 070205 [凝聚态物理]; 0703 [化学]; 080501 [材料物理与化学];

摘要：

The influence of the bacteria Bacillus subtilis (B. subtilis) on the nucleation, growth and aggregation of calcium oxalate (CaOx) crystals in aqueous solution has been studied. The crystals obtained were characterized by scanning electron microscopy, Fourier transform infrared spectroscopy and X-ray powder diffractometry. The results show that, in the presence of B. subtilis, quasi-hexagonal calcium oxalate monohydrate (COM) crystals are obtained after 24 hours of reaction at a temperature of 30 degrees C +/- 1K. However, without the presence of the bacteria, irregular CaOx crystals were obtained which contain two crystal phases: COM and calcium oxalate dihydrate (COD). This suggests that B. subtilis may promote the crystallization of COM, the major component of urinary stone. The formation mechanism of CaOx crystals in the presence of B. subtilis is explored, indicating that the cell walls and extracellular proteins of the bacteria may act as templates to induce the nucleation, growth and aggregation of CaOx crystals.

引用

页码：881 / 885

页数：5

共 20 条

[1]

Solubility and dissolution kinetics of calcium oxalate renal calculi in solutions, containing DL-lysine: in vitro experiments [J].