期刊
JOURNAL OF FOOD SCIENCE
卷 77, 期 6, 页码 T111-T117出版社
WILEY
DOI: 10.1111/j.1750-3841.2012.02734.x
关键词
biosorption; exoploysaccharide; lactic acid bacteria; Lactobacillus plantarum 70810; Pb(II)
资金
- National 863 High Technology Research Program of China [2007AA10Z354, 2011AA100903]
Lactic acid bacteria isolated from various traditional Chinese fermented foods were screened for the production of exopolysaccharides (EPS). The strain 70810 from Chinese Paocai, which was identified as Lactobacillus plantarum (HQ259238) by morphological, physiological, biochemical, and 16S rDNA tests, was selected due to its highest EPS production capability (0.859 g/L) for further study. Biosorption of Pb(II) from aqueous solutions by 70810 EPS was studied with parameters of initial pH, contact time, initial Pb(II) concentration, adsorbent dosage, and temperature, respectively. Maximum adsorption of Pb(II) was observed at pH 5, 30 degrees C, and 6 h, respectively. The adsorption capacity was also found to be dependent upon initial Pb(II) concentration and adsorbent dosage. Surface adsorption of the metal at surface of 70810 EPS was confirmed through scanning electron microscopy. Fourier transform infrared spectroscopy spectra analysis indicated that some functional groups (for example, -OH, COO-, C=O, and -NH) of 70810 EPS were involved in Pb(II) biosorption process.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据