Journal ArticleDOI
Optimization of batch fermentation conditions for dextran production
TLDR
The nutrient medium, temperature and initial pH conditions were optimised for batch dextran production in shake flask fermentations using a strain of Leuconostoc mesenteroides NRRL B 512 (F) and the optimal values of tested variables were found to be sucrose, yeast extract and K2HPO4.Abstract:
The nutrient medium (containing sucrose, yeast extract and K2HPO4), temperature and initial pH conditions were optimised for batch dextran production in shake flask fermentations using a strain of Leuconostoc mesenteroides NRRL B 512 (F). A 25−1 fractional factorial central composite experimental design was attempted. Multistage Monte Carlo optimization program was used to maximize the multiple regression equation obtained. The optimal values of tested variables for maximal dextran production were found to be: sucrose, 300 g/l; yeast extract, 10 g/l; K2HPO4, 30 g/l; temperature, 23°C and initial pH 8.3 with a predicted dextran yield of 154 g/l.read more
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Media optimization for bioproteins production from cheaper carbon source
TL;DR: In this article, a lab scale study was carried out to optimize the media composition for bioprotein production from a cheaper carbon source - wheat============flour using potential strain, which was selected earlier by screening different microorganisms.
Journal ArticleDOI
Application of Statistically Based Experimental Designs to Optimize Cellulase Production and Identification of Gene.
Aarti Thakkar,Meenu Saraf +1 more
TL;DR: A natural bacterial strain identified as Bacillus amyloliquefaciens MBAA3 using 16S rDNA partial genome sequencing has been studied for optimization of cellulase production and revealed interaction effects between concentration of a CMC and MgSO4 and pH.
Journal ArticleDOI
Characterization of dextrans produced by Lactobacillus mali CUPV271 and Leuconostoc carnosum CUPV411
María Goretti Llamas-Arriba,Ana Isabel Puertas,Alicia Prieto,Paloma López,Mónica Cobos,José I. Miranda,Cristina Marieta,Patricia Ruas-Madiedo,Mª Teresa Dueñas +8 more
TL;DR: The bacterial strains were tested for binding to the human Caco-2 cell line in the presence and absence of their respective dextran, revealing that the EPS production by L. mali decreased the binding capacity of the bacterium while the adhesion of L. carnosum did not change.
Optimization of fibrolytic enzyme production by Aspergillus japonicus C03 with potential application in ruminant feed and their effects on tropical forages hydrolysis Fernanda D. A. FacchiniAna C. ViciVivian M. Benassi • Luiz A. P. FreitasRicardo A. ReisJoao A. Jorge • Hector F. TerenziMaria de Lourdes T. M. Polizeli
TL;DR: In this article, Aspergillus japonicus C03 was optimized in a medium containing agro-industrial wastes, supplemented with peptone and yeast extract for protein synthesis.
Journal ArticleDOI
Optimization of Fermentation Parameters for Ethanol Production from Ziziphus mauritiana Fruit Pulp Using Saccharomyces cerevisiae (NA33)
TL;DR: It was shown that addition of Saccharomyces cerevisiae (NA33) was necessary to increase the rate and yield of ethanol production in Ziziphus mauritiana because the control vessel showed not much rate of fermentation.
References
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Book
Encyclopedia of polymer science and technology
TL;DR: In this article, the authors present a survey of the properties of polymers and their application in the field of chemical engineering, including the following: Coextrusion, Injection Molding, Flexible Packaging, Fibers, Polymer-Clay, and Plasticizers.
Journal ArticleDOI
Characterization and Classification of Dextrans from Ninety-six Strains of Bacteria1b
Allene Jeanes,William C. Haynes,C. A. Wilham,J. C. Rankin,E. H. Melvin,Marjorie J. Austin,J. E. Cluskey,B. E. Fisher,H. M. Tsuchiya,C. E. Rist +9 more
Journal ArticleDOI
The effect of certain cultural factors on production of dextransucrase by Leuconostoc mesenteroides.
TL;DR: Observation on factors affecting production of dextransucrase from Leuconostoc mesenteroides, strain NRRL B-512 and the possibility that more than one enzyme may be involved in the synthesis ofdextran is recognized.
Journal ArticleDOI
Medium development for xanthan production
TL;DR: Mineral sources such as CaCO3 and KH2PO4 proved to be important factors influencing polysaccharide production and quality and the use of high carbon to nitrogen ratios in the defined medium resulted in a major increase in the broth consistency index.