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Use of cheese whey to enhance Geotrichum candidum biomass production in olive mill wastewater

Journal of industrial microbiology & biotechnology, 2010-08, Vol.37 (8), p.877-882 [Peer Reviewed Journal]

Society for Industrial Microbiology 2010 ;2015 INIST-CNRS ;ISSN: 1367-5435 ;EISSN: 1476-5535 ;DOI: 10.1007/s10295-010-0752-3 ;PMID: 20526856

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Title:
Use of cheese whey to enhance Geotrichum candidum biomass production in olive mill wastewater
Author: Aouidi, Fathia ; Khelifi, Eltaeif ; Asses, Nedra ; Ayed, Lamia ; Hamdi, Moktar
Subjects: Analysis ; Bacteria ; Biochemistry ; Bioinformatics ; Biological and medical sciences ; Biomass ; Biomedical and Life Sciences ; Biotechnology ; By products ; Chemical oxygen demand ; Culture Media - chemistry ; Enzymes ; Experiments ; Food Industry ; Fundamental and applied biological sciences. Psychology ; Fungi ; Genetic Engineering ; Geotrichum - growth & development ; Geotrichum - metabolism ; Geotrichum candidum ; Industrial Microbiology ; Industrial Waste ; Inorganic Chemistry ; Life Sciences ; Lignin ; Microbiology ; Milk Proteins - isolation & purification ; Milk Proteins - metabolism ; Olea ; Residuals ; Short Communication ; Studies ; Syrups & sweeteners ; Water Microbiology ; Water treatment ; Whey Proteins
Is Part Of: Journal of industrial microbiology & biotechnology, 2010-08, Vol.37 (8), p.877-882
Description: Geotrichum candidum is a yeast-like filamentous fungus that has attracted industrial interest. The present work investigated G. candidum biomass production in agro-industrial wastewaters (olive mill wastewater (OMW) and cheese whey (CW)) as the only substrate. Different solid media (Sabouraud dextrose agar (SDA), CW, OMW, and OMW/CW mixtures in different proportions) were tested. OMW/CW mixtures proved to be suitable for optimal mycelia growth of G. candidum with a very high hyphae density. The highest fungal and expansion rate growth of 83 ± 1 mm and 12.4 day⁻¹, respectively, were obtained on a 20:80 mixture of OMW/CW, which was incubated for 7 days. This optimal mixture was used to study the biomass production and the OMW decolorization ability of G. candidum in the presence of CW in liquid medium. Liquid cultures were also conducted in OMW and CW separately. After 5 days of incubation, fungal biomass reached 9.26 g l⁻¹ in the OMW/CW mixture and only 2.83 g l⁻¹ in CW, while no biomass production was observed in OMW alone. OMW decolorization and dephenolization by G. candidum also improved in the presence of CW with a decolorization efficiency of 54.5% and a total phenolic reduction of 55.3%, compared with the control which yielded values of about 10% and 15%, respectively. These results suggested that OMW/CW—as the only substrate—could be used as a cost-effective medium to produce G. candidum biomass, without the need for water dilution or supplementation with other nutriments.
Publisher: Berlin/Heidelberg: Berlin/Heidelberg : Springer-Verlag
Language: English
Identifier: ISSN: 1367-5435
EISSN: 1476-5535
DOI: 10.1007/s10295-010-0752-3
PMID: 20526856
Source: MEDLINE
Alma/SFX Local Collection
ProQuest Central

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Use of cheese whey to enhance Geotrichum candidum biomass production in olive mill wastewater

Society for Industrial Microbiology 2010 ;2015 INIST-CNRS ;ISSN: 1367-5435 ;EISSN: 1476-5535 ;DOI: 10.1007/s10295-010-0752-3 ;PMID: 20526856

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