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Valorization of crude glycerol based on biological processes for accumulation of lipophilic compounds
- Source :
- International Journal of Biological Macromolecules. 129:728-736
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- Bacteria that are capable of accumulating lipids in their cells as storage compounds can also produce polyhydroxyalkanoates of high technological value, depending on the specific culture conditions. The objective of this study was to utilize crude glycerol from biodiesel (CGB) as a substrate, which is a major byproduct from biodiesel production, to produce lipophilic compounds. Bacillus megaterium INCQS 425 was cultivated and evaluated for the production of lipophilic compounds and the properties of these compounds were investigated. Cultivation of the bacteria in a medium with a C:N ratio of 0.60:1 favored the accumulation of lipids by (17.5%) comprising mainly palmitic acid (13.08%), palmitoleic (39.48%), and especially oleic acid (37.02%), which imparts good characteristics to biodiesel. Meanwhile, cultivation of the bacteria in a medium with a C:N ratio of 4:1 favored the accumulation of polyhydroxyalkanoates (PHA) (3.31gL-1) mainly comprising medium and long chain PHA. Low crystallinity (
- Subjects :
- Glycerol
02 engineering and technology
Biochemistry
Polyhydroxyalkanoates
Palmitic acid
03 medical and health sciences
chemistry.chemical_compound
Structural Biology
Bioproducts
Food science
Molecular Biology
030304 developmental biology
Bacillus megaterium
0303 health sciences
Biodiesel
biology
Fatty Acids
General Medicine
021001 nanoscience & nanotechnology
biology.organism_classification
Molecular Weight
Oleic acid
chemistry
Biofuels
Biodiesel production
0210 nano-technology
Hydrophobic and Hydrophilic Interactions
Biotechnology
Subjects
Details
- ISSN :
- 01418130
- Volume :
- 129
- Database :
- OpenAIRE
- Journal :
- International Journal of Biological Macromolecules
- Accession number :
- edsair.doi.dedup.....4146ef4b5543b99ba6e08ef244308244