Biodegradation of polyphenols with immobilized Candida tropicalis under metabolic induction

Ettayebi, Khalil; Errachidi, Faouzi; Jamai, Latifa; Tahri-Jouti, Mohamed Ali; Sendide, Khalid; Ettayebi, Mohamed

doi:10.1016/s0378-1097(03)00380-x

Cited by 100 publications

(57 citation statements)

References 23 publications

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“…Lanciotti et al (2005), using Yarrowia lipolytica, obtained 41% COD reduction on undiluted OMW. Ettayebi et al (2003) have reported similar results with 70% COD reduction although they used diluted OMW supplemented with nutrients. The highest COD reduction on undiluted OMW was obtained by Scioli and Vollaro (1997) who obtained 80% COD reduction on OMW supplemented with ammonium sulphate and yeast extract using the culture collection yeast Yarrowia lipolytica ATTC 20255.…”

Section: Yeast Treatment Of Omwmentioning

confidence: 65%

“…Moreover, they seem to be the dominant microorganisms in this wastewater compared to bacteria and moulds (Ben Sassi et al 2005). Collection yeasts such as Yarrowia lipolytica (Lanciotti et al 2005) as well as isolates from the olive wastes such as Candida tropicalis (Ettayebi et al 2003) and Geotrichum candidum (Assas et al 2002) led to significant reduction of polyphenols and COD in OMW.…”

Section: Introductionmentioning

confidence: 98%

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Detoxification of olive mill wastewaters by Moroccan yeast isolates

Sassi¹,

Ouazzani

Walker

et al. 2007

Biodegradation

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A total of 105 yeast strains were isolated from Moroccan olive oil production plants and evaluated for their ability to grow in olive oil mill wastewaters (OMW). The 9 isolates that grew best on OMW were selected for further study to evaluate their effect on removal of organic pollutants and OMW phytotoxicity (barley seed germination test). The results showed that at least four yeast isolates effectively lowered the toxicity of this effluent in addition to providing very useful materials in terms of both yeast biomass (6 g/l DW) and an irrigation fluid. This group of yeast isolates significantly reduced the concentration of total phenols (44% removal) and Chemical Oxygen Demand, COD (63% removal). The best germination rate of 80% for undiluted OMW was obtained for strain Candida holstii that also increased the pH from 4.76 to 6.75. Principal component analysis of the results obtained for the best yeast strains confirmed the importance of COD and total phenol reduction along with increase of organic nitrogen and final pH for the improvement of germination rates and phytotoxic reduction. This study has highlighted the potential of indigenous yeasts in detoxification of olive mill wastewaters.

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Section: Yeast Treatment Of Omwmentioning

confidence: 65%

Section: Introductionmentioning

confidence: 98%

Detoxification of olive mill wastewaters by Moroccan yeast isolates

Sassi¹,

Ouazzani

Walker

et al. 2007

Biodegradation

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“…Hamdi (1992) reported that phenols, responsible for OMW's black colour, present little toxicity and are not biodegradable. Other studies regarding the dephenolization of OMW, or production of valuable products, using as source an OMW effluent, used other C. oleophila yeast related species (Lanciotti et al, 2005;Fadil et al, 2003;Ettayebi et al, 2003;D'Annibale et al, 2006;Papanikolaou et al, 2007). These works have proven that phenol removal from OMW by yeasts seems to be a strain-dependent process (Papanikolaou et al, 2007), since in similar conditions some yeast strains are able and others cannot grow in media with OMW, even when the amount of phenolic compounds is low.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of olive oil mill wastewater toxicity on the mitochondrial bioenergetics after treatment with Candida oleophila

Peixoto

Martins

Amaral

et al. 2008

Ecotoxicology and Environmental Safety

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In a previous work the ability of Candida oleophila to use phenolic compounds as sole carbon and energy source at high concentrations without an additional carbon source was reported. C. oleophila grown in bioreactor batch cultures in a diluted and sterilized olive oil mill wastewater (OMW) caused a significant decrease in the total tannins content but no significant alteration was observed in phenolic acid and fatty acid content. Both treated and untreated OMWs were tested to evaluate the capacity in interfering with mitochondrial bioenergetics. Mitochondrial respiration was not affected by treated OMW on the range of used concentrations, contrary to the untreated OMW. Furthermore, mitochondrial membrane potential and respiratory complexes were always significantly less affected by treated OMW in comparison with untreated OMW. However, supplementary treatment should be applied before OMW could be considered non-toxic. r

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“…Cluster BII was composed only of L25 located in a separate group forming a monophyletic subclade with C. tropicalis bootstrap at 99.8% (Figure 2). C. tropicalis has been used in biotechnology, due to its ability to degrade hydrocarbons, ferment cocoa beans (Ardhana and Fleet, 2003), degrade polyphenols in wast water (Ettayebi et al, 2003), and produce polyhydroxybutyrate (Priji et , 2013). Further, C. tropicalis has been isolated from the rumens of goats (Priji et al, 2013).…”

Section: Molecular Characterizationmentioning

confidence: 99%

Identification of Levica yeasts as a potential ruminal microbial additive

Marrero¹,

Burrola-Barraza²,

Castillo-Castillo³

et al. 2013

Czech J. Anim. Sci.

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ABSTRACT:The objective of this study was to identify and characterize yeast strains isolated from the ruminal ecosystem that are capable of enhancing fermentation in bovines that consume high-fibre diets recommended by livestock feed guidelines in Cuba. The yeasts were isolated from the rumen of Holstein cows that had been fed a biofermented product. Isolated colonies were purified, identified, and characterized using biochemical and molecular methods, and their effects on ruminal fermentation were compared by measuring in vitro gas production. Thirteen new strains enhancing gas production with potential use as additives in ruminal fermentation were identified and named Levica. These strains grew successfully in detection medium for non-Saccharomyces wild yeasts and had long survival periods in the rumen. PFGE analysis found four karyotypes and homology of D1/D2 domain of gene 26S rDNA sequence was similar to that of I. orientalis, R. mucilaginosa, P. guilliermondii, and C. tropicalis. Phylogenetic analysis classified the strains into clades A and B. Clade A was further divided into groups AI, AII, BI, and BII. The AI cluster contained Levica (L)23, L24, L29, L33, and formed a monophyletic group with I. orientalis, while group AII contained L18 and formed a monophyletic group with R. muciloginosa. The BI cluster contained L13, L15, L17, L27, L28, and L32, all derived from P. guilliermondii. Cluster BII was composed only of L25 located in a separate subclade, forming a monophyletic group with C. tropicalis. The most useful strain for preparing microbial feed products to improve ruminal fermentation was L25 because it showed an increase in gas production.

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Biodegradation of polyphenols with immobilized Candida tropicalis under metabolic induction

Cited by 100 publications

References 23 publications

Detoxification of olive mill wastewaters by Moroccan yeast isolates

Detoxification of olive mill wastewaters by Moroccan yeast isolates

Evaluation of olive oil mill wastewater toxicity on the mitochondrial bioenergetics after treatment with Candida oleophila

Identification of Levica yeasts as a potential ruminal microbial additive

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