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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Optimization of fibrolytic enzyme production by Aspergillus japonicus C03 with potential application in ruminant feed and their effects on tropical forages hydrolysis
Fernanda Dell Antonio Facchini,Ana Claudia Vici,Vivian Machado Benassi,Luiz Alexandre Pedro de Freitas,Ricardo Andrade Reis,João Atílio Jorge,Héctor Francisco Terenzi,Maria de Lourdes Teixeira de Moraes Polizeli +7 more
TL;DR: This enzymatic extract had a good result on tropical forage hydrolyzes and showed better performance in the Brachiaria genera, due to their low cell wall lignin quantity.
Journal Article
Optimization of tannase production from Aspergillus foetidus using statistical design methods
R.B. Naidu,N. Saisubramanian,S. Sivasubramanian,D. Selvakumar,S. Janardhanan,Rengarajulu Puvanakrishnan +5 more
TL;DR: In this article, statistical design methods such as Plackett-Burman and a factorial central composite design (CCD) were employed for optimization of Aspergillus foetidus MTCC 6322 by submerged culture fermentation.
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Development of reduced calorie chocolate cake with jackfruit seed (Artocarpus heterophyllus Lam.) flour and polydextrose using response surface methodology (RSM)
TL;DR: In this article, the authors developed an acceptable reduced calorie chocolate cake using Response Surface Methodology (RSM) with Central Composite Rotatable Design (CCRD) in order to determine the coefficient of determination, R2 values for volume, specific volume, symmetry and uniformity.
Journal ArticleDOI
Structures, physico-chemical properties, production and (potential) applications of sucrose-derived α-d-glucans synthesized by glucansucrases.
TL;DR: An overview of the structures, production, physico-chemical properties and (potential) applications of these sucrose-derived α-d-glucan polysaccharides is presented.
Statistical Analaysis for Removal of Cadmium from Aqueous Solution at High pH
Nassereldeen Ahmed Kabbashi,Jamal Ibrahim Daoud,Mohamed Elwathig Saeed Mirghani,Nurhasni Falina Rosli +3 more
TL;DR: In this article, an approach of removing a heavy metal, Cd, from its aqueous solution by carbon nanotubes (CNTs) absorption was described. But the results obtained, the highest percentage removal of Cd using CNT is at pH7, 10 mg of CNTs dosage, contact time of 120 min and agitation speed of 150 rpm which gave 19.14% removal.
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.