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Characterization of Exopolysaccharide Produced by Streptococcus thermophilus CC30

BioMed research international, 2017-01, Vol.2017, p.4201809-11 [Peer Reviewed Journal]

Copyright © 2017 Sri Lakshmi Ramya Krishna Kanamarlapudi and Sudhamani Muddada. ;COPYRIGHT 2017 Hindawi Limited ;Copyright © 2017 Sri Lakshmi Ramya Krishna Kanamarlapudi and Sudhamani Muddada.; This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. ;Copyright © 2017 Sri Lakshmi Ramya Krishna Kanamarlapudi and Sudhamani Muddada. 2017 ;ISSN: 2314-6133 ;EISSN: 2314-6141 ;DOI: 10.1155/2017/4201809 ;PMID: 28815181

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Title:
Characterization of Exopolysaccharide Produced by Streptococcus thermophilus CC30
Author: Kanamarlapudi, Sri Lakshmi Ramya Krishna ; Muddada, Sudhamani
Fontana, José D.
Subjects: Animals ; Atomic force microscopy ; Bacteria ; Biopolymers ; Carbohydrates ; Chromatography ; Degradation ; Electron microscopy ; Emulsification ; Exploitation ; Fermentation ; Food ; Food industry ; Food processing industry ; Fourier transform infrared spectroscopy ; Fourier transforms ; Free Radical Scavengers - chemistry ; Galactose ; Galactose - chemistry ; Hydrogen peroxide ; Hydrogen Peroxide - chemistry ; Infrared spectroscopy ; Lactose ; Lactose - chemistry ; Microorganisms ; Milk ; Milk - chemistry ; Milk - microbiology ; Molecular Weight ; Physiological aspects ; Polysaccharides, Bacterial - biosynthesis ; Polysaccharides, Bacterial - chemistry ; Polysaccharides, Bacterial - isolation & purification ; Pseudoplasticity ; Rheology ; Scanning electron microscopy ; Scavenging ; Skim milk ; Spectroscopy, Fourier Transform Infrared ; Streptococcus ; Streptococcus thermophilus - chemistry ; Temperature effects ; Thermogravimetric analysis ; Viscosity ; Yogurt
Is Part Of: BioMed research international, 2017-01, Vol.2017, p.4201809-11
Description: An exopolysaccharide (EPS) producing strain CC30 was isolated from raw milk and identified as Streptococcus thermophilus with morphological and 16S sequencing analysis. The strain was shown to produce 1.95 g/L of EPS when grown in skim milk lactose medium at 30°C by increasing the viscosity of the medium. The EPS was isolated and purified, and it was shown to consist of glucose and galactose in 1 : 1 ratio, with molecular weights ranging from 58 to 180 kDa. FTIR spectroscopy indicated the EPS to have amide, hydroxyl, and carboxyl groups. Under Atomic Force Microscopy, EPS showed spike-like lumps of EPS. Scanning Electron Microscopy (SEM) studies showed that it had irregular lumps with a coarse surface. The EPS displayed pseudoplastic nature. Thermogravimetric analysis (TGA) reported a degradation temperature of 110.84°C. The purified EPS exhibited reducing activity, hydrogen peroxide radical scavenging activity, and emulsification activity. The results of the present study indicated that EPS producing Streptococcus thermophilus could serve as a promising candidate for further exploitation in food industry.
Publisher: United States: Hindawi
Language: English
Identifier: ISSN: 2314-6133
EISSN: 2314-6141
DOI: 10.1155/2017/4201809
PMID: 28815181
Source: MEDLINE
PubMed Central
ProQuest Central

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Characterization of Exopolysaccharide Produced by Streptococcus thermophilus CC30

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