Biodegradación de los compuestos fenólicos presentes en el alpechín

Durán, R. Maestro; Padilla, R.; Martı́n, A.; Ursinos, J. A. Fiestas Ros de; Mendoza, José Alba

doi:10.3989/gya.1991.v42.i4.1232

Cited by 79 publications

(24 citation statements)

References 2 publications

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“…Growth yield was expressed as gram of dry weight per litre of culture. Phenolic compounds and COD were estimated in the filtrate according respectively to the methods of Maestro-Duran et al (1991) and Knechtel (1978).…”

Section: Analytical Proceduresmentioning

confidence: 99%

Reduction of phenolics content and COD in olive oil mill wastewaters by indigenous yeasts and fungi

Aissam

Penninckx

Benlemlih

2007

World J Microbiol Biotechnol

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Olive oil mill wastewaters (OOMW) cause a recurrent environmental pollution problem. The large concentration of phenolic compounds in the organic fraction of OOMW is principally responsible for the phytotoxicity and microbial growth inhibitory effects of the effluent. Candida boidinii, Geotrichum candidum, a Penicillium sp. and Aspergillus niger HA37 were isolated from OOMW. When cultivated directly on an undiluted OOMW-based medium containing 82 g l -1 COD, these strains removed only 4-8% of chemical oxygen demand (COD) and phenolics. In contrast, reduction values attaining respectively 40-73% for phenolics and 45-78% for COD removal in the undiluted OOMW-based medium were obtained when using the strains gradually acclimated to high concentration of OOMW by successive stepwise transfer from media containing COD of 20.5 up to 82 g l -1 . Possibly, a sufficient production level of degradation and/or detoxification enzymes has to be attained to overcome the toxic effects of the phenolic fraction of concentrated OOMW. The present investigation calls attention to the necessity of acclimation for certain fungal and yeasts strains potentially useful for treating highly polluted effluents.

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Section: Analytical Proceduresmentioning

confidence: 99%

Reduction of phenolics content and COD in olive oil mill wastewaters by indigenous yeasts and fungi

Aissam

Penninckx

Benlemlih

2007

World J Microbiol Biotechnol

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“…After 15 min, the absorbance at 370 nm is measured. A blank is obtained by measuring a mixture of 4 mL of phenolic solution with 1 mL of ethanol/ water (50 : 50 v/v) [118].…”

Section: Spectrophotometric Determination Of O-diphenolsmentioning

confidence: 99%

Analytical determination of polyphenols in olive oils

Carrasco-Pancorbo

Cerretani

Bendini

et al. 2005

J of Separation Science

184

106

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The increasing popularity of olive oil is mainly attributed to its high content of oleic acid, which may affect the plasma lipid/lipoprotein profiles, and its richness in phenolic compounds, which act as natural antioxidants and may contribute to the prevention of human disease. An overview of analytical methods for the measurement of polyphenols in olive oil is presented. In principle, the analytical procedure for the determination of individual phenolic compounds in virgin olive oil involves three basic steps: extraction from the oil sample, analytical separation, and quantification. A great number of procedures for the isolation of the polar phenolic fraction of virgin olive oil, utilizing two basic extraction techniques, LLE or SPE, have been included. The reviewed techniques are those based on spectrophotometric methods, as well as analytical separation (gas chromatography (GC), high-performance liquid chromatography (HPLC), and capillary electrophoresis (CE)). Many reports in the literature determine the total amount of phenolic compounds in olive oils by spectrophometric analysis and characterize their phenolic patterns by capillary gas chromatography (CGC) and, mainly, by reverse phase high-performance liquid chromatography (RP-HPLC); however, CE has recently been applied to the analysis of phenolic compound of olive oil and has opened up great expectations, especially because of the higher resolution, reduced sample volume, and analysis duration. CE might represent a good compromise between analysis time and satisfactory characterization for some classes of phenolic compounds of virgin olive oils.

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“…1, Log = logarithm Phenol concentration was quantified using the Folin-Denis method (Maestro et al 1991). Residual glucose and carbohydrates present in the culture medium were determined as described by Miller (1959) and Dubois et al (1956), respectively.…”

Section: Methodsmentioning

confidence: 99%

Decolourisation of mushroom farm wastewater by Pleurotus ostreatus

et al. 2007

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Mushroom production on coffee pulp as substrate generates an intense black residual liquid, which requires suitable treatment. In the present study, Pleurotus ostreatus growth in wastewater from mushroom farm was evaluated as a potential biological treatment process for decolourisation as well as to obtain biomass (liquid inoculum). Culture medium components affecting mycelial growth were determined, evaluating colour removal. Laccase activity was monitored during the process. P. ostreatus was able to grow in non diluted WCP. Highest biomass yield was obtained when glucose (10 g/l) was added. The addition of this carbon source was necessary for efficient decolourisation. Agitation of the culture improved biodegradation of WCP as well as fungal biomass production. Laccase and manganese-independent peroxidase activities were detected during fungal treatment of the WCP by P. ostreatus CCEBI 3024. The laccase enzyme showed good correlation with colour loss. Both wastewater colour and pollution load (as chemical oxygen demand) decreased more than 50% after 10 days of culture. Phenols were reduced by 92%.

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Biodegradación de los compuestos fenólicos presentes en el alpechín

Cited by 79 publications

References 2 publications

Reduction of phenolics content and COD in olive oil mill wastewaters by indigenous yeasts and fungi

Reduction of phenolics content and COD in olive oil mill wastewaters by indigenous yeasts and fungi

Analytical determination of polyphenols in olive oils

Decolourisation of mushroom farm wastewater by Pleurotus ostreatus

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