Xanthan gum production by Xanthomonas axonopodis pv. mangiferaeindicae from glycerin of biodiesel in different media and addition of glucose
Document title: Xanthan gum production by Xanthomonas axonopodis pv. mangiferaeindicae from glycerin of biodiesel in different media and addition of glucose
Journal: Acta scientiarum. Biological sciences
Database: PERIÓDICA
System number: 000433510
ISSN: 1679-9283
Authors: 1
2
3
Institutions: 1Universidade Federal Fluminense, Programa de Pos-Graduacao em Engenharia de Biossistemas, Niteroi, Rio de Janeiro. Brasil
2Universidade Federal Fluminense, Escola de Engenharia, Niteroi, Rio de Janeiro. Brasil
3Universidade Federal Fluminense, Faculdade de Farmacia, Niteroi, Rio de Janeiro. Brasil
Year:
Volumen: 41
Country: Brasil
Language: Inglés
Document type: Artículo
Approach: Analítico, descriptivo
English abstract Biodiesel production has been increasing yearly in Brazil. A large amount of glycerin is generated in this process and needs a correct destination. One possible use of this glycerin in crude form is in biotechnological processes. Xanthan gum is a commercial gum used primarily in the pharmaceutical and food industries as thickener, emulsifier and stabilizer. It is synthetized by species of the bacterium Xanthomonas generally from glucose. However, current research shows that species of this bacterium have the capacity to grow and synthesize the gum using glycerin from biodiesel. The aim of this study was to produce xanthan gum using glycerin from biodiesel production in medium with different nitrogen content, named complex and simple media. The kinetics of fermentation in simple medium showed a two-fold increase in gum production (3.16 kg.m-3) compared to the one in complex medium (1.46 kg.m-3) after 120 hours. The gum generated in this study showed chemical and rheological characteristics of xanthan gum. Glucose supplementation did not show an increase in xanthan production but did increase the consistency index and the behavioral index of solutions of this gum
Disciplines: Biología
Keyword: Biotecnología,
Biopolímeros,
Producción bacteriana,
Goma de xantana,
Biodiesel,
Residuos,
Glicerina,
Xanthomonas axonopodis
Keyword: Biotechnology,
Biopolymers,
Bacterial production,
Xanthan gum,
Biodiesel,
Wastes,
Glycerin,
Xanthomonas axonopodis
Full text: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/43661/pdf