A simple1H N.m.r. Method for the quantitation of O-acetate ester and pyruvic acid acetal content of polymeric xanthan gum and related polysaccharides

1984 ◽  
Vol 16 (1) ◽  
pp. 5-10 ◽  
Author(s):  
John F. Kennedy ◽  
David L. Stevenson ◽  
Charles A. White ◽  
Malcolm S. Tolley ◽  
Ian J. Bradshaw
Keyword(s):  
Pyruvic Acid ◽  
Xanthan Gum ◽  
Acetate Ester ◽  
Pyruvic Acid Acetal

A mannitol teichoic acid containing rhamnose and pyruvic acid acetal from the cell wall of Brevibacterium permense VKM Ac-2280

2003 ◽  
Vol 338 (23) ◽  
pp. 2745-2749 ◽  
Author(s):  
Natalia V Potekhina ◽  
Alexander S Shashkov ◽  
Lyudmila I Evtushenko ◽  
Sof'ya N Senchenkova ◽  
Irina B Naumova
Keyword(s):  
Cell Wall ◽  
Pyruvic Acid ◽  
Teichoic Acid ◽  
Pyruvic Acid Acetal

Structure and gene cluster of the O-antigen of Escherichia coli O156 containing a pyruvic acid acetal

2016 ◽  
Vol 430 ◽  
pp. 24-28 ◽  
Author(s):  
Zhifeng Duan ◽  
Sof'ya N. Senchenkova ◽  
Xi Guo ◽  
Andrei V. Perepelov ◽  
Alexander S. Shashkov ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Gene Cluster ◽  
Pyruvic Acid ◽  
O Antigen ◽  
Pyruvic Acid Acetal

scholarly journals Concise synthesis of the pyruvic acid acetal containing pentasaccharide repeating unit of the cell wall O-antigen of Escherichia coli O156

RSC Advances ◽  
2017 ◽  
Vol 7 (79) ◽  
pp. 49903-49909 ◽  
Author(s):  
Anshupriya Si ◽  
Anup Kumar Misra
Keyword(s):  
Escherichia Coli ◽  
Cell Wall ◽  
Pyruvic Acid ◽  
O Antigen ◽  
Satisfactory Yield ◽  
Pyruvic Acid Acetal

The pentasaccharide repeating unit of the cell wall O-antigen ofEscherichia coliO156 containing 4,6-O-(R)-pyruvate acetal was synthesized using stereoselective [2 + 3] block glycosylation in satisfactory yield.

scholarly journals Use of Chicken Feather Peptone and Sugar Beet Molasses as Low Cost Substrates for Xanthan Production by Xanthomonas campestris MO-03

Fermentation ◽  
2019 ◽  
Vol 5 (1) ◽  
pp. 9 ◽  
Author(s):  
Murat Ozdal ◽  
Esabi Başaran Kurbanoglu
Keyword(s):  
Sugar Beet ◽  
Pyruvic Acid ◽  
Xanthan Gum ◽  
Xanthomonas Campestris ◽  
Low Cost ◽  
Nitrogen Sources ◽  
Chicken Feather ◽  
Beet Molasses ◽  
Sugar Beet Molasses ◽  
Cost Efficient

Xanthan gum is one of the polysaccharides most commonly used in a broad range of industries (food, cosmetics, pharmaceutical, etc.). Agro-industrial by-products are being explored as alternative low-cost nutrients to produce xanthan gum by Xanthomonas campestris. In this study, for the production of xanthan gum, sugar beet molasses and chicken feather peptone (CFP) were used as carbon and nitrogen sources, respectively. X. campestris produced the highest level of xanthan gum (20.5 g/L) at 60 h of cultivation using sugar beet molasses (40 g/L total sugar) supplemented with CFP (4 g/L) at pH 7, 200 rpm, and 30 °C. The pyruvic acid content of the xanthan gums increased with increasing CFP concentration. Compared with commercial organic nitrogen sources (tryptone, bacto peptone, and yeast extract), the highest production of xanthan gum was obtained with CFP. Moreover, among the tested peptones, the highest pyruvic acid (3.2%, w/w) content was obtained from CFP. The usage of sugar beet molasses and CFP as substrates in industries would enable a cost-efficient commercial production. These results suggest that sugar beet molasses and CFP can be used as available low-cost substrates for xanthan gum production by X. campestris.

Structure of the K82 Capsular Polysaccharide from Acinetobacter baumannii LUH5534 Containing a d-Galactose 4,6-Pyruvic Acid Acetal

2018 ◽  
Vol 83 (7) ◽  
pp. 831-835 ◽  
Author(s):  
A. A. Kasimova ◽  
J. J. Kenyon ◽  
N. P. Arbatsky ◽  
A. S. Shashkov ◽  
A. V. Popova ◽  
...  
Keyword(s):  
Acinetobacter Baumannii ◽  
Pyruvic Acid ◽  
Capsular Polysaccharide ◽  
Pyruvic Acid Acetal

Analysis of pyruvic acid acetal containing polysaccharides by methanolysis and reductive cleavage methods

1991 ◽  
Vol 199 (2) ◽  
pp. 154-161 ◽  
Author(s):  
Thierry Fontaine ◽  
Franck Talmont ◽  
Guy G.S. Dutton ◽  
Bernard Fournet
Keyword(s):  
Pyruvic Acid ◽  
Reductive Cleavage ◽  
Pyruvic Acid Acetal
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