Taxonomic group: bacteria / Proteobacteria
(Phylum: Proteobacteria)
NCBI PubMed ID: 35027132Publication DOI: 10.1016/j.carbpol.2021.119030Journal NLM ID: 8307156Publisher: Elsevier
Correspondence: G. Li <gqli
nankai.edu.cn>; Ting Ma < tingma
nankai.edu.cn>
Institutions: Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, College of Life Sciences, Nankai University, Tianjin, China
Microbial polysaccharides as renewable bioproducts have attracted lots of attention in various industries. Hesan (Highly elastic Sanxan), an exopolysaccharide produced by a plasma mutagenic strain Sphingomonas sanxanigenens NX03, was characterized. It possessed the same monosaccharide composition as the original polysaccharide Sanxan produced from wild-type strain NX02, but significantly reduced acetyl and glyceryl contents. Textural analysis showed the springiness and cohesiveness of Hesan gel was much higher than Sanxan gel, and rheological behaviors indicated it possessed a lower loss factor, and its conformational transition temperatures at different concentrations were obviously lower than Sanxan gel and high-acyl gellan gel, which suggested that Hesan gel was highly elastic and temperature-sensitive. Additionally, Hesan gel could be efficiently produced through micro-aerobic static culture in shallow (10.46 ± 0.30 g/L) and deep liquids (3.21 ± 0.32 g/L), which was significantly different from the fermentation of other water-soluble polysaccharides. In short, this study characterizes a new mutant strain and its polysaccharide products.
Rheological properties, high elasticity, micro-aerobic culture, microbial polysaccharide, temperature-sensitive property, texture profile analysis
Structure type: polymer chemical repeating unit
Location inside paper: p. 119030-1
Trivial name: sanxan, sanxan (Ss)
Compound class: EPS
Contained glycoepitopes: IEDB_115136,IEDB_136105,IEDB_137485,IEDB_140630,IEDB_142488,IEDB_144983,IEDB_146664,IEDB_152206,IEDB_189517,IEDB_225177,IEDB_423153,IEDB_885823,IEDB_983930,IEDB_983931,SB_192,SB_44,SB_72
Methods: 1H NMR, HPLC, extraction, statistical analysis, SEC-MALLS, rheological study, cultivation, plasma mutagenesis, TPA
Comments, role: structure from ref. Wu et al., 2017b, DOI:10.1016/j.carbpol.2017.08.057.
NCBI Taxonomy refs (TaxIDs): 1123269Reference(s) to other database(s): GTC:G40925ZM
Show glycosyltransferases
There is only one chemically distinct structure:
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