In vitro assessment on effect of duodenal contents on the lead (Pb2+) binding capacity of two probiotic bacterial strains`
文献类型： 外文期刊
作者： Xing, Sicheng 1 ; Song, Ying 1 ; Liang, Juan Boo 2 ; Jahromi, Mohammad Faseleh 2 ; Shokryazda, Parisa 2 ; Mi, Jiand 1 ;
作者机构： 1.South China Agr Univ, Coll Anim Sci, Guangzhou 510642, Guangdong, Peoples R China
2.Univ Putra Malaysia, Inst Trop Agr & Food Secur, Serdang 43400, Malaysia
3.Guangdong Acad Agr Sci, Agrobiol Gene Res Ctr, Guangzhou 510640, Guangdong, Peoples R China
4.South China Agr Univ, Coll Food Sci, Guangzhou 510642, Guangdong, Peoples R China
5.ABRII, East & Northeast Branch, POB 91735 844, Mashhad, Iran
关键词： Intestinal contents;Pb2+;Functional group;Binding capacity;Probiotic bacteria
期刊名称：ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY （ 影响因子：6.291； 五年影响因子：6.393 ）
ISSN： 0147-6513
年卷期： 2017 年 139 卷
页码：
收录情况： SCI
摘要： In vitro Lead (Pb2+) binding capacity of two probiotic bacteria strains, namely Biftdobacterium longwnBB79 and Lactobacillus pentosusITA23, was assessed following incubation with the intestinal contents (IC) of laying hens. Results of this study demonstrated that IC treatment significantly enhanced (P < 0.01) Pb2+ binding capacity of both bacterial strains. Fourier transform infrared analysis indicated that several functional groups (0-H or N-H, C-H, C13, C-0, and C-0-C) on the bacteria cell wall involved in metal ion binding were altered after IC incubation, and new groups appeared between the 3700 cm(-1) and 4000 cm(-l)bands. Transmission electron microscopy demonstrated that after incubation with IC, unidentified IC components created new binding sites on the bacterial cell surface. These particles also changed the mechanism of Pb2+ binding of the two strains from intracellular accumulation to extracellular adsorption.
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