Structural Characterization and in Vitro Fermentation of beta-Mannooligosaccharides Produced from Locust Bean Gum by GH-26 endo-beta-1,4-Mannanase (ManB-1601)

Srivastava Praveen Kumar; Panwar Deepesh; Prashanth K. V. HarishKapoor Mukesh

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Structural Characterization and in Vitro Fermentation of beta-Mannooligosaccharides Produced from Locust Bean Gum by GH-26 endo-beta-1,4-Mannanase (ManB-1601)

机译：Structural Characterization and in Vitro Fermentation of beta-Mannooligosaccharides Produced from Locust Bean Gum by GH-26 endo-beta-1,4-Mannanase (ManB-1601)

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Size exclusion chromatography of beta-mannooligosaccharides (beta-MOS) mixtures, obtained from ManB-1601 hydrolysis of locust bean gum, resulted in separation of oligosaccharides with various degrees of polymerization (DP 2, 3, and- 5),. The oligosaccharides were structurally ESI-MS, FTIR, XRD, TGA, and NMR (H-1 and C-13) and functionally (in vitro fermentation) characterized. DP2 oligosaccharide was composed of two species, '(A), mannopyratose beta-1,4 mannopyranose and (B) alpha-1,6-galactosyl-mannopyranok, while DP3 olignsacCharide showed the presence of only one species, i.e. alpha-D-galactosyl-beta-D-mannobiok. ManB-1601 was capable of cleaving near the branch points in the substrate, resulting in oligosaccharides with galactose at the terminal poition apart from attacking unsubstituted beta-1,4-glycosidic linkages. DP2 and DP3 improved the growth of three out of seven species of Lactobacillus while DP5 resulted in poor growth of all Lactobacillus spp. under in vitro conditions. DP2, DP3, and DPS were found to inhibit the growth of Escherichia coli, Listeria monocytogenes and Salmonella typhi.

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来源
《Journal of Agricultural and Food Chemistry》 |2017年第13期|2827-2838|共12页
作者
Srivastava Praveen Kumar; Panwar Deepesh; Prashanth K. V. HarishKapoor Mukesh;
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作者单位

Cent Food Technol Res Inst, CSIR, Dept Prot Chem & Technol, Mysuru 570020, India;

Cent Food Technol Res Inst, CSIR, Dept Biochem, Mysuru 570020, India;

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正文语种英语
中图分类营养卫生、食品卫生;农业科学;
关键词
GH-26 endo-beta-1; 4-mannanase; Lactobacillus spp.; beta-mannooligosaccharides; structural characterization; in vitro fermentation;

Structural Characterization and in Vitro Fermentation of beta-Mannooligosaccharides Produced from Locust Bean Gum by GH-26 endo-beta-1,4-Mannanase (ManB-1601)

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