Article (Scientific journals)
Burkholderia thailandensis as a microbial cell factory for the bioconversion of used cooking oil to polyhydroxyalkanoates and rhamnolipids
Kourmentza, C.; Costa, J.; Azevedo, Z. et al.
2018In Bioresource Technology, 247, p. 829-837
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Keywords :
Non-pathogenic bacteria; Polyhydroxyalkanoates; Rhamnolipids; Simultaneous production; Used cooking oil; Bacteria; Biomolecules; Biopolymers; Emulsification; Lipids; Oils and fats; Emulsification index; Microbial cell factories; Non-pathogenic bacterium; Polyhydroxybutyrate; Rhamnolipid biosurfactants; Surface active agents; Article; Burkholderia thailandensis; Burkholderia; Pseudomonas aeruginosa; Cooking; Glycolipids; Oils; Recycling
Abstract :
[en] The present work assessed the feasibility of used cooking oil as a low cost carbon source for rhamnolipid biosurfactant production employing the strain Burkholderia thailandensis. According to the results, B. thailandensis was able to produce rhamnolipids up to 2.2 g/L, with the dominant congener being the di-rhamnolipid Rha-Rha-C 14 -C 14 . Rhamnolipids had the ability to reduce the surface tension to 37.7 mN/m and the interfacial tension against benzene and oleic acid to 4.2 and 1.5 mN/m, while emulsification index against kerosene reached up to 64%. The ability of B. thailandensis to accumulate intracellular biopolymers, in the form of polyhydroxyalkanoates (PHA), was also monitored. Polyhydroxybutyrate (PHB) was accumulated simultaneously and consisted of up to 60% of the cell dry weight. PHB was further characterized in terms of its molecular weight and thermal properties. This is the first study reporting the simultaneous production of polyhydroxyalkanoates and rhamnolipids by the non-pathogen rhamnolipid producer B. thailandensis. © 2017 Elsevier Ltd
Disciplines :
Engineering, computing & technology: Multidisciplinary, general & others
Author, co-author :
Kourmentza, C.;  UCIBIO-REQUIMTE, Department of Chemistry, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa (FCT/UNL), Caparica, 2829-516, Portugal
Costa, J.;  UCIBIO-REQUIMTE, Department of Chemistry, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa (FCT/UNL), Caparica, 2829-516, Portugal
Azevedo, Z.;  LAQV-REQUIMTE, Department of Chemistry and Biochemistry, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, Porto, 4169-007, Portugal
Sevrin, Chantal ;  Université de Liège - ULiège > CEIB
Grandfils, Christian ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Biochimie et physiologie générales, et biochimie humaine
De Freitas, V.;  LAQV-REQUIMTE, Department of Chemistry and Biochemistry, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, Porto, 4169-007, Portugal
Reis, M. A. M.;  UCIBIO-REQUIMTE, Department of Chemistry, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa (FCT/UNL), Caparica, 2829-516, Portugal
Language :
English
Title :
Burkholderia thailandensis as a microbial cell factory for the bioconversion of used cooking oil to polyhydroxyalkanoates and rhamnolipids
Publication date :
2018
Journal title :
Bioresource Technology
ISSN :
0960-8524
eISSN :
1873-2976
Publisher :
Elsevier Ltd
Volume :
247
Pages :
829-837
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
EC625774
Funders :
CE - Commission Européenne [BE]
Available on ORBi :
since 25 September 2019

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