کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5157443 | 1500585 | 2017 | 37 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Structural characterization and antioxidant property of released exopolysaccharides from Lactobacillus delbrueckii ssp. bulgaricus SRFM-1
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Structural characterization and antioxidant property of released exopolysaccharides from Lactobacillus delbrueckii ssp. bulgaricus SRFM-1 Structural characterization and antioxidant property of released exopolysaccharides from Lactobacillus delbrueckii ssp. bulgaricus SRFM-1](/preview/png/5157443.png)
چکیده انگلیسی
Three released exopolysaccharide fractions (r-EPS1, r-EPS2 and r-EPS3) were isolated from the fermented milk of Lactobacillus delbrueckii ssp. bulgaricus SRFM-1 and purified by anion exchange chromatography, and characterizations of the structures were conducted. The r-EPS1 and r-EPS2 were homogenous with the average molecular weights of 3.97 Ã 105 Da and 3.86 Ã 105 Da, respectively. Three r-EPS fractions were composed of galactose and glucose with a molar ratio of 1.23: 1.00, 1.33: 1.00 and 1.00: 1.34, respectively. Structural characterization indicated that the r-EPS1 contained a backbone of â6-β-d-Galp-(1 â 4)-β-d-Glcp-(1 â 4)-α-d-Galp-(1 â 4)-β-d-Galp-(1 â 6)-β-d-Galp-(1 â 4)-β-d-Glcp-(1 â 4)-α-d-Galp-(1 â 4)-β-d-Galp-(1 â 4)-α-d-Glcp-(1â, and had three branching points which existed in terminal with D-Glcp residues with α/β-d-(1 â 6) linkages. The r-EPS2 was composed of â6-β-d-Galp-(1 â 4)-β-d-Glcp-(1 â 6)-α-d-Galp-(1â as the backbone chain with a branching point which also existed in terminal D-Glcp residue with β-(1 â 6) linkage. In addition, three r-EPS fractions exhibited strong scavenging activities on superoxide radical, hydroxyl radical, DPPH radical and chelating activity on ferrous ion, and their antioxidant activities decreased in the order of r-EPS1 > r-EPS2 > r-EPS3.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 173, 1 October 2017, Pages 654-664
Journal: Carbohydrate Polymers - Volume 173, 1 October 2017, Pages 654-664
نویسندگان
Weizhi Tang, Mingsheng Dong, Weilu Wang, Shuo Han, Xin Rui, Xiaohong Chen, Mei Jiang, Qiuqin Zhang, Junjun Wu, Wei Li,